CN111610552B - Ray emission area image measuring device and method - Google Patents
Ray emission area image measuring device and method Download PDFInfo
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- CN111610552B CN111610552B CN202010509841.0A CN202010509841A CN111610552B CN 111610552 B CN111610552 B CN 111610552B CN 202010509841 A CN202010509841 A CN 202010509841A CN 111610552 B CN111610552 B CN 111610552B
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Abstract
The invention provides a ray emission area image measuring device and a method, wherein the ray emission area image measuring device comprises: the ray emission module, the imaging module and the image recording module are arranged in sequence; wherein, the imaging module is provided with an arc cone; the ray emitting module is used for generating rays and sending the rays to the image recording module through the arc cone according to a preset track so that the image recording module generates a measurement image according to the rays. Adopt the circular arc awl as imaging module in this application, simplified imaging module's design, processing and detection, reduced the accuracy of aiming, just, broken through the restriction of current ray emission area image detection technique field range, reduced the requirement to ray yield, improved the tolerance to emission area ray source position random displacement, simultaneously, guaranteed high spatial resolution ability, improved measurement accuracy.
Description
Technical Field
The invention relates to the technical field of measurement of ray emission area images, in particular to a ray emission area image measuring device and method.
Background
The ray device has wide application in many scientific research and industrial production fields, the commonly used ray device comprises an accelerator neutron source, a hash neutron source, a neutron tube, a reactor, a synchrotron radiation device, a radioactive isotope source and the like, and the types of rays comprise neutrons, gamma rays, X rays and the like. At present, a large-scale laser device is used as a novel ray device, a ray source generated by the large-scale laser device has the characteristics of small size, short duration, high ray flux and the like, can generate neutrons, protons, gamma rays and X rays simultaneously, and has strong application potential. In practical applications, in order to be able to effectively utilize various radiation devices, it is necessary to know the properties of the radiation source, including flux, energy spectrum, size and shape, etc. Therefore, various radiation emitting region image detection techniques have been developed for different radiation devices.
For a large laser device, the existing ray emission area image measurement technology mainly comprises a penumbra imaging diagnosis technology and a pinhole imaging diagnosis technology. When any single hole is used as an imaging component, namely the imaging component of the single hole imaging diagnosis technology, the field range of the imaging component is usually 200 μm, and the central position variation range of a neutron source reaches 400 μm multiplied by 500 μm, so that the single hole structure cannot meet the requirement of image measurement of a laser-driven fusion neutron emission region. In order to solve the problem of serious insufficient field range of a single-hole structure, the imaging component evolves from the single-hole structure to a multi-type multi-hole array structure which comprises a plurality of half-shadow holes or a plurality of pinholes and the like, and although the multi-hole array structure can meet the requirement of laser-driven fusion neutron emission region image measurement, the application range of the multi-hole array structure is greatly limited, and the multi-hole array structure is only suitable for neutron yield exceeding 1 multiplied by 10 14 The MJ laser device causes the application of the pinhole imaging diagnosis technology to be limited by the neutron yield, and reduces the measurement precision.
Disclosure of Invention
In view of the above, the present invention aims to provide a device and a method for measuring an image of a radiation emission area, so as to alleviate the above problems, and an arc cone is used as an imaging module, so that the design, processing and detection of the imaging module are simplified, the aiming accuracy is reduced, the limitation of the field range of the existing radiation emission area image detection technology is broken through, the requirement on the yield of radiation is reduced, the tolerance on the random movement of the radiation source position of the emission area is improved, meanwhile, the high spatial resolution capability is ensured, and the measurement accuracy is improved.
In a first aspect, an embodiment of the present invention provides a radiation emitting area image measuring apparatus, where the apparatus includes: the ray emission module, the imaging module and the image recording module are arranged in sequence; wherein the imaging module is provided with an arc cone;
the ray emitting module is used for generating rays and sending the rays to the image recording module through the arc cone according to a preset track so that the image recording module generates a measurement image according to the rays.
With reference to the first aspect, an embodiment of the present invention provides a first possible implementation manner of the first aspect, where the preset trajectory is a path tangent to the arc cone, and the step of sending the ray to the image recording module through the arc cone according to the preset trajectory includes:
and sending the ray to the image recording module according to a path tangent to the arc cone.
With reference to the first possible implementation manner of the first aspect, an embodiment of the present invention provides a second possible implementation manner of the first aspect, where the image recording module is configured to receive the ray and generate a measurement image according to the ray; the measurement image comprises a dark area, a penumbra area and a bright area, and the dark area, the penumbra area and the bright area are sequentially arranged outwards along the radial direction.
With reference to the second possible implementation manner of the first aspect, an embodiment of the present invention provides a third possible implementation manner of the first aspect, wherein a radiation source is disposed in an emission region of the radiation emission module;
the image recording module is further configured to reconstruct an image of the radiation source according to the penumbra region, so as to obtain a reconstructed image of the radiation source.
With reference to the second possible implementation manner of the first aspect, the embodiment of the present invention provides a fourth possible implementation manner of the first aspect, wherein the signal intensity of the dark area is set according to the thickness of the arc cone.
With reference to the second possible implementation manner of the first aspect, the embodiment of the present invention provides a fifth possible implementation manner of the first aspect, wherein the signal strength of the bright area is set according to the yield of the radiation.
With reference to the first aspect, an embodiment of the present invention provides a sixth possible implementation manner of the first aspect, where 1 circular arc cone is provided, and is disposed between the radiation emitting module and the image recording module;
or 2 circular cones form a circular cone combination, and the circular cone combination is arranged between the ray emission module and the image recording module.
In combination with the third possible implementation manner of the first aspect, the embodiment of the present invention provides a seventh possible implementation manner of the first aspect, wherein the radiation source includes at least one of: accelerator neutron source, hash neutron source, neutron tube, reactor, synchrotron radiation device, radioactive isotope source and laser device.
With reference to the first aspect, an embodiment of the present invention provides an eighth possible implementation manner of the first aspect, where the ray includes at least one of: neutrons, X-rays, and gamma rays.
In a second aspect, an embodiment of the present invention further provides a method for measuring an image of a radiation emitting area, where the method is applied to the device for measuring an image of a radiation emitting area, and the method includes:
generating rays; wherein the rays are generated by a ray emitting module;
and sending the rays to the image recording module through an arc cone according to a preset track so that the image recording module generates a measurement image according to the rays.
The embodiment of the invention has the following beneficial effects:
the embodiment of the invention provides a ray emission area image measuring device and a method, wherein the ray emission area image measuring device comprises: the ray emission module, the imaging module and the image recording module are arranged in sequence; wherein, the imaging module is provided with an arc cone; the ray emitting module is used for generating rays and sending the rays to the image recording module through the arc cone according to a preset track so that the image recording module generates a measurement image according to the rays. Adopt the circular arc awl as imaging module in this application, simplified imaging module's design, processing and detection, reduced the accuracy of aiming, just, broken through the restriction of current ray emission area image detection technique field range, reduced the requirement to ray yield, improved the tolerance to emission area ray source position random displacement, simultaneously, guaranteed high spatial resolution ability, improved measurement accuracy.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram of a ray-emitting region image measuring apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic view of an arc cone according to an embodiment of the present invention;
FIG. 3 is a schematic view of another radiation-emitting region image measuring apparatus according to an embodiment of the present invention;
FIG. 4 is a schematic size diagram of an arc cone according to an embodiment of the present invention;
FIG. 5 is a diagram of a neutron point diffusion function provided by an embodiment of the present invention;
FIG. 6 is a schematic diagram illustrating measurement results of a neutron source according to an embodiment of the present invention;
FIG. 7 is a schematic diagram illustrating measurement results of another neutron source provided by an embodiment of the invention;
fig. 8 is a flowchart of a method for measuring an image of a radiation emitting area according to an embodiment of the present invention.
Icon:
10-a radiation emitting module; 20-an imaging module; 30-image recording module.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Aiming at the existing large laser device, a millimeter-magnitude target pellet is directly or indirectly driven by laser, so that the target pellet is continuously contracted, and fuel gas is fused in the target pellet to reach the fusion reaction generation condition; at this time, the fuel undergoes a fusion reaction and emits various rays, mainly including neutrons, gamma rays, X-rays, and the like. In practical application, a high spatial resolution neutron imaging technology is usually adopted to obtain a neutron source region image, so that parameters such as the position, size, shape and uniformity of the neutron source region are deduced, and the spatial resolution of a neutron imaging system is required to be less than ten microns because the size of a neutron source is very small (about hundred microns). Currently, neutron imaging systems for laser-driven fusion neutron emission region measurements employ two imaging techniques, namely, for low yield: (a)>1×10 13 ) And is suitable for high yield>1×10 15 ) Pinhole ofImaging diagnostic techniques, and imaging components evolve from single-well structures to multi-well multi-array structures.
For the single-hole structure, the field range is usually 200 μm, and the variation range of the central position of the neutron source reaches 400 μm × 500 μm, so the single-hole structure cannot meet the requirement of image measurement of the neutron emission region in laser-driven fusion. In order to solve the problem of serious insufficient field range of a single-hole structure, a multi-type porous array structure design is provided, wherein the multi-type porous array structure can measure a plurality of images including a pinhole image and a penumbra hole image, the image characteristics are different, the multi-type porous array structure can be used for mutual verification, and the accuracy of image reconstruction is improved; and the multi-hole array structure can enlarge the field range of the system and reduce the aiming difficulty. However, the application range of the porous array structure is greatly limited, and the porous array structure is only suitable for neutron yield exceeding 1 × 10 14 The MJ class laser device of (a), resulting in the limitation of the application of pinhole imaging diagnostic technology by neutron yield, reduces the accuracy of measurement.
Based on the problems, the embodiment of the invention provides a ray emission area image measuring device and a method, which are used for relieving the problems, and the arc cone is used as an imaging module, so that the design, the processing and the detection of the imaging module are simplified, the aiming precision is reduced, the limitation of the field range of the existing ray emission area image detection technology is broken through, the requirement on the ray yield is reduced, the tolerance on the random movement of the ray source position of an emission area is improved, meanwhile, the high spatial resolution capability is ensured, and the measuring precision is improved.
For the convenience of understanding the present embodiment, a detailed description will be given below of a radiation-emitting region image measuring apparatus according to an embodiment of the present invention.
The first embodiment is as follows:
an embodiment of the present invention provides a ray emission area image measuring apparatus, and fig. 1 is a schematic diagram of the ray emission area image measuring apparatus provided in the embodiment of the present invention, as shown in fig. 1, the apparatus includes: the ray emission module 10, the imaging module 20 and the image recording module 30 are arranged in sequence; wherein the imaging module 20 is provided with a circular arc cone.
The ray emitting module 10 is configured to generate a ray, and send the ray to the image recording module 30 through an arc cone according to a preset track, so that the image recording module 30 generates a measurement image according to the ray. Here, the imaging module 20 adopts a circular cone, which simplifies the design, processing and detection of the imaging module and reduces the aiming accuracy compared with the existing single-hole structure and multi-type multi-hole array structure. In addition, the ray point spread function of the imaging module 20 depends on the radius of the arc cone, so that the limitation of the field of view range of the existing ray emitting area image detection technology is broken through, and the requirement on the ray yield is reduced.
The ray emission area image measuring device provided by the embodiment of the invention comprises: the ray emission module, the imaging module and the image recording module are arranged in sequence; wherein, the imaging module is provided with an arc cone; the ray emitting module is used for generating rays and sending the rays to the image recording module through the arc cone according to a preset track so that the image recording module generates a measurement image according to the rays. The circular arc cone is adopted as the imaging module in the application, the design, the processing and the detection of the imaging module are simplified, the aiming precision is reduced, the limitation of the field range of the existing ray emission area image detection technology is broken through, the requirement on the ray yield is reduced, the tolerance on the random movement of the ray source position of the emission area is improved, meanwhile, the high spatial resolution capability is ensured, and the measurement precision is improved.
In practical applications, the arc cone is in a shuttle-shaped structure, as shown in fig. 2, the arc cone is in an axisymmetric structure, the upper arc and the lower arc of the cross section along the axis are arcs with the same radius, the cross section perpendicular to the axis is a circle, and the radius of the cross section is determined by the radius of the arc on the cross section along the axis and the distance between the arcs. In addition, the arc cone is bounded by the maximum cross section of the vertical axis, and the left part and the right part of the arc cone can be asymmetric, namely the length and the end surface size of the left part and the right part can be different; or, the circular arc radius of the left part and the right part can be different by taking the maximum section of the vertical axis as a boundary; alternatively, the circular arc may be replaced by other arc structures, such as an elliptical arc, an arbitrary quadratic curve, etc., and therefore, the embodiment of the present invention is not limited to the specific shape of the circular arc cone.
In addition, in practical application, the number of the arc cones may be 1, and in this case, the arc cones are disposed between the radiation emitting module 10 and the image recording module 30; or, the number of the arc cones is 2, so that an arc cone combination is formed, and the arc cone combination is arranged between the ray emission module 10 and the image recording module 30, so that rays in a large space range are transmitted to the image recording module 30 through the arc cones in a preset track by changing the relative position relation between the arc cones in the arc cone combination, that is, the view field range is expanded, and the spatial resolution is improved. Therefore, the number of the arc cones is not limited to be described herein.
Wherein, the preset track is a path tangent to the arc cone, and the emission area of the ray emission module 10 is provided with a ray source; the radiation emitted by the radiation source is sent to the image recording module 30 according to a path tangent to the arc cone, so that the image recording module 30 generates a measurement image according to the radiation. In addition, the preset trajectory may be a path near a point of tangency with the circular cone, and at this time, the radiation emitted from the radiation source is transmitted to the image recording module 30 along the path near the point of tangency with the circular cone. Wherein the radiation source comprises at least one of: accelerator neutron source, hash neutron source, neutron tube, reactor, synchrotron radiation device, radioisotope source and laser device, the ray includes at least one of: neutrons, X-rays, and gamma rays. Here, the image recording module 30 may be a neutron image detection system, which includes a neutron image detection unit, a visible light collection unit, a visible light signal amplification unit, and a visible light image recording unit, where the neutron image detection unit may be a flat plate type scintillator, or a capillary array scintillator, the visible light collection unit may be a lens assembly, or a fiber optic cone, or an image transmission beam, the visible light signal amplification unit is an image intensifier, the visible light image recording unit may be a visible light CCD (Charge-coupled Device), or another Device that generates a measurement image according to radiation, and here, regarding a specific shape of the image recording module 30, the embodiment of the present invention is not limited.
For convenience of understanding, it is exemplified that an accelerator neutron source emits neutrons, and as shown in fig. 3, the neutrons emitted by the neutron source are sent to the image recording module 30 along a path tangential to an arc cone, where the neutron source is an accelerator neutron source or a hash neutron source, and the image recording module 30 generates a measurement image according to the received neutrons. As shown in fig. 3, the measurement image includes a dark area, a penumbra area, and a bright area, and the dark area, the penumbra area, and the bright area are sequentially disposed outward along the radial direction. The center of the measured image is a dark area, the signal intensity of the dark area is set according to the thickness of the arc cone, the signal of the dark area is a background signal of the measured image, and the background signal is a background signal which does not contain any image information of an emission source in any emission area; the outermost periphery of the measured image is a bright area, and the signal intensity of the bright area is set according to the yield of neutrons, namely the signal intensity of the bright area is only related to the yield (quantity) of the neutrons; the image recording module 30 is further configured to reconstruct an image of the neutron source according to the penumbra region, so as to obtain a reconstructed image of the neutron source.
In addition, the ray point spread function of the imaging module 20 composed of the arc cone also depends on the arc radian of the arc cone, i.e. the circle radius, wherein the ray point spread function is the spatial distribution of the ray flux formed after the ray passes through the imaging module 20. At the moment, for the selected circular radius of the circular cone, if the position of the ray source is changed, rays can still be tangent to the circular cone, the shape of a ray point diffusion function is basically kept unchanged, and the change range of the spatial position of the ray source meeting the conditions is the field range of the imaging system, so that rays emitted in a large range are tangent to the circular cone by selecting the proper circular radius of the circular cone, the limitation of the field range of the existing image detection technology of a ray emission area is broken through, the requirement on the yield of the rays is reduced, and the tolerance on the random movement of the position of the ray source in the emission area is improved; and ensuring that the ray point spread function has good sharpness, namely high spatial resolution, and establishing a large-view-field and high-spatial-resolution ray emission area image detection technology.
The ray emission area image measuring device can be applied to a neutron source and a laser device, and for a ray source with a larger size, the size of a circular cone needs to be proportionally amplified correspondingly, so that the field range is correspondingly and proportionally increased, but for the ray source with a large size, the spatial resolution of a measured image will be poor. In addition, for a neutron source, a heavy metal material with a short neutron free path needs to be selected, and the free path of a neutron is directly related to the energy of the neutron, so that the material of the circular arc cone should be selected according to the energy of the neutron, for example, for 14MeV neutrons emitted by deuterium-tritium fusion reaction, at the moment, tungsten, gold and the like should be selected for the circular arc cone.
In addition, when the radiation is X-ray, the measurement principle is the same as the measurement principle of the neutron, it should be noted that, because the X-ray penetrability is weaker than that of the neutron, a circular cone with a smaller size should be selected, and the material of the circular cone should be set according to the energy of the X-ray, for example, copper, titanium, tantalum, and the like should be selected.
Therefore, in the application, the circular cone is used as the imaging module, the ray point spread function depends on the circular arc radian, namely the circular radius, and the position of the ray source can be changed at will in a hundred-micron region by selecting the proper size of the circular cone, including radian, length, end surface diameter and the like, and the ray emitted by the ray emission module can still be tangent to the circular arc, namely the shape of the ray point spread function is basically kept unchanged, and the circular cone has a larger field range compared with the existing single-structure imaging module which is limited to the field range of 0-200 μm; and the spatial resolution is determined by the full width at half maximum of the point spread function of the ray, so that the larger the radius of the arc cone is, the higher the spatial resolution is, thereby ensuring high spatial resolution capability, improving measurement accuracy, breaking through the limitation of the field range of the existing ray emission area image detection technology, reducing the requirement on the yield of the ray, and improving the tolerance of random movement of the ray source position of the emission area.
This is illustrated here for ease of understanding. The image measuring apparatus of the ray emission region as shown in fig. 3, wherein the neutron source is located at the center of the field of view, fig. 4 is a schematic size diagram of the arc cone, when the neutron source is 0.5mm away from the center of the field of view, the neutron point spread function as shown in fig. 5 is obtained, as shown in fig. 5, a sharp edge is formed at the edge of the arc cone, the half width of the sharp edge is about 5 ± 1 μm, and the edge shape has no obvious change, that is, when the neutron source is 0.5mm away from the center of the field of view, the neutron point spread function has no obvious change, the imaging field of view is not less than 1mm, and the spatial resolution can reach 5 μm.
In addition, for two neutron sources which are 0.3mm away from the center of the field of view and have a distance of 20 μm and a size of about 5 μm, a measurement image and a reconstruction image of the neutron source can be obtained through an image recording module, as shown in fig. 6, wherein 6-a is a point diffusion function image of the neutron source, 6-b is a noise-free measurement image of the neutron source, 6-c is a source image of the neutron source, 6-d is a noise measurement image before filtering of the neutron source, 6-e is a noise measurement image after filtering of the neutron source, and 6-f is a reconstruction image of the neutron source. According to 6-c and 6-f, the reconstructed image of the neutron source is similar to the source image, the spatial resolution capability of not more than 5 μm is achieved, and the distance is still kept to be 20 μm.
When the diameter of the neutron source is about 40 μm and deviates from the center of the field of view by 0.3mm, at this time, a measurement image and a reconstruction image of the neutron source can be obtained through the image recording module, as shown in fig. 7, wherein 7-a is a point spread function image of the neutron source, 7-b is a noise-free measurement image of the neutron source, 7-c is a source image of the neutron source, 7-d is a noise measurement image before filtering of the neutron source, 7-e is a noise measurement image after filtering of the neutron source, and 7-f is a reconstruction image of the neutron source. According to 7-c and 7-f, the reconstructed image of the neutron source is close to the source image and has no obvious distortion, so that the measurement precision is improved while the high spatial resolution capability is ensured.
On the basis of the foregoing embodiments, an embodiment of the present invention further provides a radiation emitting area image measuring method, which is applied to the radiation emitting area image measuring apparatus described above, as shown in fig. 8, and the method includes the following steps:
step S802, generating rays; wherein, the ray is generated by a ray emitting module;
step S804, the ray is sent to the image recording module through the arc cone according to the preset track, so that the image recording module generates a measurement image according to the ray.
According to the ray emission area image measuring method provided by the embodiment of the invention, firstly, rays are generated through the ray emission module, and the rays are sent to the image recording module through the arc cone according to the preset track, so that the image recording module generates the measuring image according to the rays. Therefore, the circular arc cone is used as the imaging module in the application, the design, processing and detection of the imaging module are simplified, the aiming precision is reduced, the limitation of the field range of the existing ray emission area image detection technology is broken through, the requirement on the ray yield is reduced, the tolerance of random movement of the ray source position of the emission area is improved, meanwhile, the high spatial resolution capability is ensured, and the measurement precision is improved.
The embodiment of the present invention further provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and capable of running on the processor, and when the processor executes the computer program, the steps of the ray emitting area image measuring method provided by the above embodiment are implemented.
The embodiment of the invention further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the ray emission area image measurement method of the above embodiment are executed.
The computer program product provided in the embodiment of the present invention includes a computer readable storage medium storing a program code, where instructions included in the program code may be used to execute the method described in the foregoing method embodiment, and specific implementation may refer to the method embodiment, which is not described herein again.
It can be clearly understood by those skilled in the art that, for convenience and simplicity of description, the specific working process of the system and the apparatus described above may refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.
In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer-readable storage medium executable by a processor. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A radiation-emitting region image measuring apparatus, comprising: the ray emission module, the imaging module and the image recording module are arranged in sequence; wherein the imaging module is provided with an arc cone;
the ray emitting module is used for generating rays and sending the rays to the image recording module through the arc cone according to a preset track so that the image recording module generates a measurement image according to the rays;
the ray point spread function of the imaging module depends on the circle radius of an arc cone, and for the selected circle radius of the arc cone, if the position of the ray source is changed, rays can still be tangent to the arc cone, the shape of the ray point spread function is kept unchanged, wherein the ray point spread function is the ray flux spatial distribution formed after the rays pass through the imaging module.
2. The radiation emitting area image measuring device according to claim 1, wherein the predetermined trajectory is a path tangent to the arc cone, and the step of sending the radiation to the image recording module through the arc cone according to the predetermined trajectory comprises:
and sending the ray to the image recording module according to a path tangent to the arc cone.
3. The radiation-emitting region image measuring device of claim 2, wherein the image recording module is configured to receive the radiation and generate a measurement image according to the radiation; the measurement image comprises a dark area, a penumbra area and a bright area, and the dark area, the penumbra area and the bright area are sequentially arranged outwards along the radial direction.
4. The radiation emitting region image measuring device according to claim 3, wherein the emitting region of the radiation emitting module is provided with a radiation source;
the image recording module is further configured to reconstruct an image of the radiation source according to the penumbra region, so as to obtain a reconstructed image of the radiation source.
5. The radiation emitting region image measuring apparatus according to claim 3, wherein the signal intensity of the dark region is set according to the thickness of the arc cone.
6. A radiation-emitting region image measuring apparatus according to claim 3, wherein the signal intensity of the bright region is set according to the yield of the radiation.
7. The radiation emitting area image measuring device according to claim 1, wherein the number of the circular cones is 1, and the circular cones are arranged between the radiation emitting module and the image recording module;
or, the number of the arc cones is 2, so as to form an arc cone combination, and the arc cone combination is arranged between the ray emission module and the image recording module.
8. The radiation-emitting region image measuring apparatus of claim 4, wherein the radiation source comprises at least one of: accelerator neutron source, hash neutron source, neutron tube, reactor, synchrotron radiation device, radioactive isotope source and laser device.
9. The radiation-emitting region image measuring apparatus according to claim 1, wherein the radiation comprises at least one of: neutrons, X-rays, and gamma rays.
10. A radiation-emitting region image measuring method applied to the radiation-emitting region image measuring apparatus according to any one of claims 1 to 9, the method comprising:
generating rays; wherein the rays are generated by a ray emitting module;
the rays are sent to the image recording module through an arc cone according to a preset track, so that the image recording module generates a measurement image according to the rays;
the ray point spread function of the imaging module depends on the circle radius of an arc cone, and for the selected circle radius of the arc cone, if the position of the ray source is changed, rays can still be tangent to the arc cone, the shape of the ray point spread function is kept unchanged, wherein the ray point spread function is the ray flux spatial distribution formed after the rays pass through the imaging module.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107941827A (en) * | 2017-12-26 | 2018-04-20 | 中国工程物理研究院激光聚变研究中心 | A kind of ICF pellets implosion compression process high-precision imaging device stage by stage |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016114385A (en) * | 2014-12-11 | 2016-06-23 | 三菱重工メカトロシステムズ株式会社 | Neutron tomography apparatus |
| CN107941827A (en) * | 2017-12-26 | 2018-04-20 | 中国工程物理研究院激光聚变研究中心 | A kind of ICF pellets implosion compression process high-precision imaging device stage by stage |
Non-Patent Citations (4)
| Title |
|---|
| 《Evolutionary reconstruction of neutron penumbral images》;Yen-Wei Chen et al;《 Proceedings of IEEE International Conference on Evolutionary Computation》;19960522;第452-457页 * |
| 基于Ｘ光微点源的半影成像技术;余波 等;《强激光与粒子束》;20150731;第27卷(第7期);第2604-2610页 * |
| 基于神光Ⅲ主机装置的中子半影锥成像系统设计;余波 等;《强激光与粒子束》;20131031;第25卷(第10期);第111-114页 * |
| 惯性约束聚变的中子半影成像诊断系统和非线性重建方法研究;余波;《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑》;20110415;C040-10 * |
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