CN109061716A - A kind of set baby neutron spectrometer - Google Patents
A kind of set baby neutron spectrometer Download PDFInfo
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- CN109061716A CN109061716A CN201810954513.4A CN201810954513A CN109061716A CN 109061716 A CN109061716 A CN 109061716A CN 201810954513 A CN201810954513 A CN 201810954513A CN 109061716 A CN109061716 A CN 109061716A
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- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T3/00—Measuring neutron radiation
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Abstract
本发明公开了一种套娃中子谱仪，包括中子辐射探测分析处理装置和多个不同尺寸的慢化体，慢化体包括容器杯、杯盖和水体，容器杯为正圆柱容器杯，圆形杯盖中心位置设置有手柄盘，手柄盘和圆形杯盖上均开设有相连通的通孔，手柄盘的侧壁上开设有与其通孔连通的螺纹孔，紧固件穿过螺纹孔与中空圆柱连接杆抵接，容器杯的壁厚和圆形杯盖的厚度均为2mm，手柄盘的高度为6mm～15mm，多个从小到大依次排序的容器杯中相邻两个容器杯的内直径差最小为2cm。本发明以水体为慢化体，取用方便、不受限制，可以满足以中子剂量测量为目的的中子能谱的测算能力，通过在携带或移动过程中将水体倒掉的方式，有效减小质量和空间，为中子能谱现场测量提供便捷灵活的解决方案。
The invention discloses a matryoshka neutron spectrometer, which comprises a neutron radiation detection analysis processing device and a plurality of moderators of different sizes, wherein the moderator comprises a container cup, a cup cover and a water body, and the container cup is a positive cylindrical container cup , the center of the circular cup cover is provided with a handle plate, the handle plate and the circular cup cover are provided with a through hole connected to each other, the side wall of the handle plate is provided with a threaded hole communicating with the through hole, and the fastener passes through the The threaded hole is in contact with the hollow cylindrical connecting rod, the wall thickness of the container cup and the thickness of the round cup cover are both 2mm, the height of the handle plate is 6mm-15mm, and there are two adjacent container cups arranged in order from small to large The inner diameter difference of the container cup is minimum 2cm. The present invention uses the water body as the moderator, which is convenient and unrestricted, and can meet the neutron energy spectrum measurement capability for the purpose of neutron dose measurement. By pouring out the water body during carrying or moving, it can effectively Reduce the mass and space, and provide a convenient and flexible solution for neutron spectrum on-site measurement.
Description
Technical field
The invention belongs to neutron spectrometer equipment technical fields, and in particular to a kind of set baby neutron spectrometer.
Background technique
As nuclear energy, nuclear technology are sent out in the application popularization in the fields such as national product, military and national defense, medicine, agricultural and high speed
Exhibition, nuclear radiation measurement and protection are just being increasingly subject to the attention of people.Neutron is prevalent in as important nuclear radiation source item
Nuclear power station, nuclear facilities, around nuclear weapon；Even if in the life of general public, being also not located at environmental exact details neutron all the time
In radiation field.The neutron radiation effect of workplace is often described with ambient dose equivalent of neutron, fluence, the energy of it and neutron
It is closely related；Especially energy, identical fluence, the neutron of different-energy are different to the contribution of dosage, this surveys neutron energy spectrum
Amount occupies an important position in radioprotectant is measured and calculated.So-called " neutron energy spectrum ", refer to the fluence φ E of different-energy neutron with
The distribution statistics spectrogram of neutron energy E is also " neutron fluence --- Energy distribution spectrum ".The neutron energy range being typically concerned about is
10-9~10MeV is divided by its energy size: fast neutron (500keV~10MeV), intermediate neutron (1keV~500keV), it is slow in
Son (energy is less than 1keV), if the movement of slow neutron and a large amount of molecules of surrounding medium at room temperature is in thermal equilibrium state, also
It is to say that its energy is equivalent to the energy of the warm-up movement of surrounding medium molecule, referred to as thermal neutron, energy 0.025eV.
The angle calculated from ambient dose equivalent of neutron, generallys use " more ball neutron spectrometers " to live neutron energy spectrum
It measures, resolve.More ball neutron spectrometers are mainly placed on by a series of different solid polyethylene moderating sphere of diameters and one
The thermal-neutron detector of slowing down ball center forms, and the assembly of each polyethylene moderating sphere and a thermal-neutron detector is claimed
It is received ball (Bonner Sphere) for a nation, it is a series of in more ball neutron spectrometers since neutron spectrum measurement is in-site measurement
As slow body, diameter inch differs independent polyethylene solid material from 3 inches to 15, and volume is big, quality weight, carry,
In moving process, there is inconvenience；And the sphere structure of each slow body be placed in site environment need be equipped with a sphere bottom
Therefore seat, and is added to unnecessary trouble convenient for stablizing slow body for the carrying of more ball neutron spectrometers, movement.
Summary of the invention
In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that providing a kind of set baby neutron
Spectrometer, it is novel in design rationally, using water body as slow body, take conveniently, it is unrestricted, measurement neutron energy range is wide, peak area
Energy level accurate positioning, can satisfy by neutron dose measure for the purpose of neutron energy spectrum measuring and calculating ability, by carry or move
The mode for outwelling water body during dynamic, effectively reduces its quality and is taken up space, provided for the in-site measurement of neutron energy spectrum
Convenient flexible solution, convenient for promoting the use of.
In order to solve the above technical problems, the technical solution adopted by the present invention is that: a kind of set baby neutron spectrometer, feature exist
At the slow body including neutron irradiation detection analysis processing unit and multiple and different sizes, the neutron irradiation detection analysis
Reason device includes the data processing module that thermal-neutron detector and the signal detected to thermal-neutron detector are analyzed and processed, heat
Neutron detector is spherical shape3He proportional counter, each slow body include container cup, cup lid and are contained in container cup
Water body, the container cup are cylindrical chamber cup, and the interior diameter of the cylindrical chamber cup is equal with the interior height of the cylindrical chamber cup,
Cup lid is round cup lid, and the center of the circle cup lid is provided with handle chassis, and handle chassis and the circular cup are covered and opened
It is spherical equipped with the through-hole being connected3He proportional counter is located at the geometric center of container cup, spherical3It is connected on He proportional counter
Hollow circuit cylinder connecting rod sequentially pass through through-hole in handle chassis and through-hole that the circular cup covers, opened on the side wall of handle chassis
Equipped with the threaded hole being connected to its through-hole, fastener passes through the threaded hole and abuts with the hollow circuit cylinder connecting rod, container cup
Wall thickness and the thickness of round cup lid be 2mm, the height of handle chassis is 6mm~15mm, multiple successively to sort from small to large
The interior diameter minimum 2cm of difference of two neighboring container cup, container cup are acrylic container cup in container cup, and cup lid is acrylic cup
Lid.
Above-mentioned a kind of set baby neutron spectrometer, it is characterised in that: the data processing module includes sequentially connected charge
Sensitive preamplifier, multichannel pulse scope-analyzer, communication module and computer, the signal output end of thermal-neutron detector with
The signal input part of charge sensitive preamplifier connects.
Above-mentioned a kind of set baby neutron spectrometer, it is characterised in that: the multichannel pulse scope-analyzer is serial multiple tracks arteries and veins
Amplitude analyzer is rushed, communication module is the communication module that RS485 serial ports turns USB interface.
A kind of above-mentioned set baby neutron spectrometer, it is characterised in that: the spherical shape3He proportional counter is SP9 spherical3He is just
Compare counter.
Above-mentioned a kind of set baby neutron spectrometer, it is characterised in that: the quantity of the slow body is 17, in 17 slow bodies
17 container cups interior diameter be respectively 4cm, 6cm, 8cm, 10cm, 12cm, 14cm, 16cm, 18cm, 20cm, 22cm,
24cm, 26cm, 28cm, 30cm, 32cm, 35cm and 40cm.
Above-mentioned a kind of set baby neutron spectrometer, it is characterised in that: the handle chassis is acrylic handle chassis.
A kind of above-mentioned set baby neutron spectrometer, it is characterised in that: the quantity of the neutron irradiation detection analysis processing unit
For one or more；
When the quantity of the neutron irradiation detection analysis processing unit is multiple, the neutron irradiation detection analysis processing
The quantity of device is equal with the quantity of the slow body, and multiple neutron irradiation detection analysis processing units with it is multiple described
Slow body corresponds.
Compared with the prior art, the present invention has the following advantages:
1, the present invention obtains neutron energy in different range by the way that the slow body of multiple and different sizes is arranged respectively, wherein
Each slow body includes container cup, cup lid and the water body being contained in container cup, using water body as slow body, take conveniently, not by
Limitation, when needing to carry out neutron irradiation detection, the slow body of multiple and different sizes is successively arranged, by each slow body with
Thermal-neutron detector cooperation, measures the neutron energy spectrum in across dozens of order of magnitude energy range, and peak area energy level, peak position positioning are quasi-
Really, the function of existing more ball neutron spectrometers can be fully achieved；At the end of neutron radiation detection, the water body in container cup is fallen
Fall, the container cup of multiple and different sizes is successively set in together according to size order, realizes and carry, in moving process, it is shared
Space is small, light weight, saves manpower, provides more convenient flexible solution for the in-site measurement of neutron energy spectrum, be convenient for
It promotes the use of.
2, the thickness of the present invention uses the wall thickness of container cup and round cup lid is 2mm, and it is multiple from small to large successively
The interior diameter minimum 2cm of difference of two neighboring container cup is, it can be achieved that relatively small container cup wears cup in the container cup of sequence
It is disposed entirely within after lid in relatively large container cup, the center setting handle chassis of round cup lid is convenient for the sealing of container cup
And unlatching, using effect are good.
3, the present invention is novel in design rationally, and container cup is acrylic container cup, and cup lid is acrylic cup lid, using acrylic
Material makes container cup and cup lid, and the chemical name of acrylic is polymethyl methacrylate, polymethyl methacrylate and water
It is combined as slow body, close with C/Hratio in the chemical formula of the spherical shell slow body of existing polyethylene material production, neutron enters
It is mapped in slow body and is approached with hydrogen in slow body or carbon generation elastic scattering effect, existing more ball neutrons can be fully achieved
The function of spectrometer, convenient for promoting the use of.
In conclusion the present invention is novel in design rationally, using water body as slow body, convenience, unrestricted, measurement neutron are taken
Energy range is wide, the energy level accurate positioning of peak area, can satisfy by neutron dose measure for the purpose of neutron energy spectrum measuring and calculating ability,
It by way of outwelling water body in carrying or moving process, effectively reduces its quality and is taken up space, be neutron energy spectrum
In-site measurement provide convenient flexible solution, convenient for promote the use of.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Detailed description of the invention
Fig. 1 is the structure connection diagram of neutron irradiation detection analysis processing unit and a slow body of the present invention.
Fig. 2 is that the slow body of the multiple and different sizes of the present invention removes set baby's structural schematic diagram of water body.
Fig. 3 is the schematic block circuit diagram of neutron irradiation detection analysis processing unit of the present invention.
Fig. 4 is laboratory background environmental neutron energy spectrum diagram in embodiment 1.
Fig. 5 is Am-Be neutron source energy spectrum diagram in embodiment 2.
Fig. 6 is the neutron source thermal neutron peak Am-Be area partial enlarged view in embodiment 2.
Description of symbols:
1-container cup；2-cup lids；3-handle chassis；
4-fasteners；5-water bodys；6-thermal-neutron detectors；
7-data processing modules；7-1-charge sensitive preamplifier；
7-2-multichannel pulse scope-analyzer；7-3-communication module；
7-4-computer.
Specific embodiment
As shown in Figure 1 to Figure 3, the present invention includes the slowing down of neutron irradiation detection analysis processing unit and multiple and different sizes
Body, the neutron irradiation detection analysis processing unit include thermal-neutron detector 6 and to thermal-neutron detector 6 detect signal into
The data processing module 7 of row analysis processing, thermal-neutron detector 6 are spherical shape3He proportional counter, each slow body include
Container cup 1, cup lid 2 and the water body 5 being contained in container cup 1, the container cup 1 are cylindrical chamber cup, the cylindrical chamber cup
Interior diameter it is equal with the interior height of the cylindrical chamber cup, cup lid 2 is round cup lid, and the centre bit of the circle cup lid 2 installs
It is equipped with handle chassis 3, offers the through-hole being connected on handle chassis 3 and the round cup lid 2, it is spherical3He proportional counter position
It is spherical in the geometric center of container cup 13The hollow circuit cylinder connecting rod connected on He proportional counter sequentially passes through in handle chassis 3
Through-hole and the round cup lid 2 on through-hole, offer threaded hole be connected to its through-hole on the side wall of handle chassis 3, fastening
Part 4 passes through the threaded hole and abuts with the hollow circuit cylinder connecting rod, and the thickness of the wall thickness of container cup 1 and round cup lid 2 is
2mm, the height of handle chassis 3 are 6mm~15mm, two neighboring container cup 1 in multiple container cups 1 successively to sort from small to large
The minimum 2cm of interior diameter difference, container cup 1 are acrylic container cup, and cup lid 2 is acrylic cup lid.
It should be noted that the slow body using multiple and different sizes obtains neutron energy in different range respectively, wherein
Each slow body includes container cup 1, cup lid 2 and the water body 5 being contained in container cup, is slow body with water body 5, take conveniently,
It is unrestricted, when needing to carry out neutron irradiation detection, the slow body of multiple and different sizes is successively arranged, passes through each slowing down
Body and thermal-neutron detector 6 cooperate, and measure the neutron energy spectrum in across dozens of order of magnitude energy range, peak area energy level, peak position are fixed
Level is true, can fully achieve the function of existing more ball neutron spectrometers；It, will be in container cup 1 at the end of neutron radiation detection
Water body 5 is outwelled, and the container cup of multiple and different sizes is successively set in together according to size order, realizes carrying, moving process
In, take up space small, light weight, saves manpower, provides more convenient flexible solution party for the in-site measurement of neutron energy spectrum
Case, actually in use, water should fill with, the interior diameter of the cylindrical chamber cup is equal with the interior height of the cylindrical chamber cup, shape
It is spherical at a right cylinder3He proportional counter is located at the geometric center of container cup 1, detects the neutron irradiation of all directions,
The interior diameter of cylindrical chamber cup is equal with the interior height of cylindrical chamber cup, on container cup surface any point to container cup 1 geometry
The deviation of the distance at center does not influence the progress of experiment, realizes that carrying is easy to carry on the basis of meeting experiment, at low cost
Function.
In actual use, the thickness of the wall thickness of the container cup 1 of use and round cup lid 2 is 2mm, and it is multiple from small to large
The minimum 2cm of interior diameter difference of two neighboring container cup 1 is, it can be achieved that relatively small container cup 1 in the container cup 1 successively to sort
It is disposed entirely in relatively large container cup 1 after wearing cup lid 2, the center setting handle chassis 3 of round cup lid 1 is convenient for appearance
The sealing and unlatching of device cup 1, using effect are good；In the present embodiment, container cup 1 is acrylic container cup, and cup lid 2 is acrylic cup
Lid makes container cup 1 and cup lid 2 using acrylic material, and the chemical name of acrylic is polymethyl methacrylate, poly- methyl
Methyl acrylate and water are combined as slow body, and hydrocarbon in the chemical formula of the spherical shell slow body of existing polyethylene material production
Than close, neutron is incident in slow body to be approached with hydrogen in slow body or carbon generation elastic scattering effect, can be completely real
The function of existing existing more ball neutron spectrometers.
In the present embodiment, the spherical shape3He proportional counter is SP9 spherical3He proportional counter.
In the present embodiment, the data processing module 7 includes sequentially connected charge sensitive preamplifier 7-1, multiple tracks
Pulse-height analyzer 7-2, communication module 7-3 and computer 7-4, the signal output end and charge-sensitive of thermal-neutron detector 6
The signal input part of preamplifier 7-1 connects.
In the present embodiment, the multichannel pulse scope-analyzer 7-2 is serial multichannel pulse scope-analyzer, communication module
7-3 is the communication module that RS485 serial ports turns USB interface.
It should be noted that SP9 is spherical3The voltage pulse signal of He proportional counter output is through the preposition amplification of charge-sensitive
Device amplification, is sent into serial multichannel pulse scope-analyzer, is sent into meter finally by the communication module that RS485 serial ports turns USB interface
Calculation machine is completed to count collection process.
In the present embodiment, the quantity of the slow body is 17, the interior diameter point of 17 container cups 1 in 17 slow bodies
Not Wei 4cm, 6cm, 8cm, 10cm, 12cm, 14cm, 16cm, 18cm, 20cm, 22cm, 24cm, 26cm, 28cm, 30cm, 32cm,
35cm and 40cm.
It should be noted that the slow body of 17 sizes, is to consider from the moderating effect to neutron, can cover in concern
Sub- energy range is spaced 2 centimetres, it can reach energy discrimination, the size of space is too small, increases calculation amount instead, makes power spectrum
Anti- solution complicates.
In the present embodiment, the handle chassis 3 is acrylic handle chassis.
In the present embodiment, the quantity of the neutron irradiation detection analysis processing unit is one or more；When the neutron
When the quantity of radiation detection analysis processing device is multiple, the quantity of the neutron irradiation detection analysis processing unit and described slow
The quantity for changing body is equal, and multiple neutron irradiation detection analysis processing units and multiple slow bodies correspond.
It should be noted that one can be used when the quantity of the neutron irradiation detection analysis processing unit is one
Neutron irradiation detection analysis processing unit is arranged in pairs or groups in turn with multiple slow bodies, detection neutron irradiation one by one；In described
The quantity of sub- radiation detection analysis processing device be it is multiple when, can with multiple neutron irradiation detection analysis processing units with it is multiple
Slow body cooperates while detecting neutron irradiation, using flexible.
Embodiment 1
The present invention in use, choose interior diameter be respectively 6cm, 8cm, 10cm, 12cm, 14cm, 16cm, 18cm, 20cm,
The container cup 1 of 22cm, 24cm, 26cm carry out the environmental neutron spectral measurement of laboratory background, and set baby's neutron spectrometer has been calculated before measurement
Energy Response Matrix, choose corresponding with dimensions above container cup 1 response matrix, SP9 is spherical3He proportional counter is placed in
1 center of container cup is fixed, then into container cup 1, water filling forms positive cylinder slow body, starts to measure, each size slowing down bulk measurement
It is 12 hours, ascending according to 1 size of container cup, the neutron count rate per second detected is respectively as follows: 0.00465,0.00549,
0.00553,0.00641,0.00576,0.00630,0.00613,0.00523,0.00595,0.00539,0.00520；Using
Few road spectrum unscrambling algorithm solves neutron energy spectrum.
As shown in figure 4, mainly there are two peak sections for the resulting result of laboratory background environmental neutron power spectrum: evaporation neutron area
(0.1MeV~10MeV), the region neutron energy between 0.1MeV to 10MeV, main source be in cosmic ray in
Resonance nuclear reaction occurs for sub and atmosphere and building, and de excitation is sent out and neutron of the energy of formation between 0.1MeV~10MeV；
The neutron energy of thermal neutron range, the region is less than 0.4eV, i.e., less than 4 × 10-7MeV.The part neutron source is in sky
The various substances such as wall, the ground of neutron and laboratory in gas collide scattering, are finally reached thermal equilibrium state, thus
A thermal neutron peak is formd in background neutron power spectrum, and its distribution meets Maxwell-Boltzmann distribution.
Embodiment 2
In the present embodiment, choose interior diameter be respectively 6cm, 8cm, 10cm, 12cm, 14cm, 16cm, 18cm, 20cm,
The container cup 1 of 22cm, 24cm, 26cm, 28cm, 30cm carry out the spectral measurement of Am-Be neutron source, and set baby's neutron spectra has been calculated before measurement
The Energy Response Matrix of instrument chooses response matrix corresponding with dimensions above container cup 1, by SP9 spherical shape3He proportional counter is set
It is fixed in 1 center of container cup, then into container cup 1, water filling forms positive cylinder slow body, starts to measure, each size slow body is surveyed
Amount 0.5 hour, it is ascending according to 1 size of container cup, the neutron count rate per second detected is respectively as follows: 2.42,5.25,8.48,
12.76,16.12,16.30,17.43,16.68,19.27,16.13,18.69,17.11,14.14；Using few road spectrum unscrambling algorithm
Solve neutron energy spectrum.
As shown in figure 5, mainly there are three peak sections for the resulting result of Am-Be neutron source power spectrum: being respectively Am-Be neutron peak
Area, scattered neutron peak area, thermal neutron range.
Am-Be neutron peak area, the region neutron energy is between 1MeV to 10MeV, and peak position is near 3MeV, this and Am-
That there are maximum at 1MeV~10MeV, 3.1MeV is consistent for the energy of Be neutron source outgoing neutron.
Scattered neutron peak area, the region neutron energy is 1 × 10-3Between MeV~1MeV.The formation in scattered neutron peak area,
When being due to experiment, and neutrons collimation system is not used, and neutron source surrounding is mostly concrete wall, Am-Be neutron source institute
1MeV~10MeV neutron of sending and concrete wall collide scattering, lose certain energy, enter back into SP9 ball later
Shape3He proportional counter is detected, to form scattered neutron peak area in the slightly lower place of energy, fast neutron is dissipated through colliding
It penetrates, becomes intermediate neutron.
Thermal neutron range, the region neutron energy is near 0.1eV, i.e., and 1 × 10-7Near MeV.Am-Be neutron source is issued
Neutron, scattered neutron, environmental exact details neutron and laboratory the various substances such as wall, ground collide scattering, finally reach
To thermal equilibrium state, thermal neutron peak area is formd, since Am-Be neutron source is stronger, thermal neutron peak area has been forced down, which is indulged
Reference axis amplification, obtains Fig. 6.Can be found that from Fig. 6: its peak position is less than 4 × 10-7It is special to meet thermal neutron Energy distribution by MeV
Point.
The angle that the present invention is measured from ambient dose equivalent of neutron calculates live neutron energy spectrum, it is desirable that spectrum
Instrument energy response range is wide, from thermal neutron to fast neutron, across at least ten order of magnitude；And resolution ratio is not required excessively high: accurate
It is accurate to the order of magnitude, peak position.
Set baby neutron spectrometer of the invention can successfully measure 10-9MeV~10MeV, across in 11 order of magnitude energy ranges
Neutron energy spectrum, peak area energy level, peak position accurate positioning can fully achieve the function of existing more ball neutron spectrometers；In addition, its
It carries, in moving process, take up space small, light weight, provides more convenient flexible solution for the in-site measurement of neutron energy spectrum
Certainly scheme.
The above is only presently preferred embodiments of the present invention, is not intended to limit the invention in any way, it is all according to the present invention
Technical spirit any simple modification to the above embodiments, change and equivalent structural changes, still fall within skill of the present invention
In the protection scope of art scheme.
Claims (7)
1. a kind of set baby neutron spectrometer, it is characterised in that: including neutron irradiation detection analysis processing unit and multiple and different sizes
Slow body, the neutron irradiation detection analysis processing unit include thermal-neutron detector (6) and to thermal-neutron detector (6) visit
The data processing module (7) that the signal of survey is analyzed and processed, thermal-neutron detector (6) are spherical shape3He proportional counter, each
The slow body includes container cup (1), cup lid (2) and the water body (5) being contained in container cup (1), and the container cup (1) is circle
Column container cup, the interior diameter of the cylindrical chamber cup is equal with the interior height of the cylindrical chamber cup, and cup lid (2) is round cup lid,
The center of the circle cup lid (2) is provided with handle chassis (3), is offered on handle chassis (3) and the round cup lid (2)
The through-hole being connected is spherical3He proportional counter is located at the geometric center of container cup (1), spherical3It is connected on He proportional counter
Hollow circuit cylinder connecting rod sequentially pass through the through-hole on through-hole on handle chassis (3) and the round cup lid (2), handle chassis (3)
Side wall on offer the threaded hole being connected to its through-hole, fastener (4) passes through the threaded hole and connect with the hollow circuit cylinder
Bar abuts, and the thickness of the wall thickness of container cup (1) and round cup lid (2) is 2mm, and the height of handle chassis (3) is 6mm~15mm,
The interior diameter minimum 2cm of difference of two neighboring container cup (1), container cup in multiple container cups (1) successively to sort from small to large
It (1) is acrylic container cup, cup lid (2) is acrylic cup lid.
2. a kind of set baby neutron spectrometer described in accordance with the claim 1, it is characterised in that: the data processing module (7) includes
Sequentially connected charge sensitive preamplifier (7-1), multichannel pulse scope-analyzer (7-2), communication module (7-3) and calculating
The signal output end of machine (7-4), thermal-neutron detector (6) is connect with the signal input part of charge sensitive preamplifier (7-1).
3. a kind of set baby neutron spectrometer according to claim 2, it is characterised in that: the multichannel pulse scope-analyzer
(7-2) is serial multichannel pulse scope-analyzer, and communication module (7-3) is the communication module that RS485 serial ports turns USB interface.
4. a kind of set baby neutron spectrometer described in accordance with the claim 1, it is characterised in that: the spherical shape3He proportional counter is
SP9 is spherical3He proportional counter.
5. a kind of set baby neutron spectrometer described in accordance with the claim 1, it is characterised in that: the quantity of the slow body is 17,
The interior diameter of 17 container cups (1) in 17 slow bodies be respectively 4cm, 6cm, 8cm, 10cm, 12cm, 14cm, 16cm,
18cm, 20cm, 22cm, 24cm, 26cm, 28cm, 30cm, 32cm, 35cm and 40cm.
6. a kind of set baby neutron spectrometer described in accordance with the claim 1, it is characterised in that: the handle chassis (3) is acrylic hand
Handle disk.
7. a kind of set baby neutron spectrometer described in accordance with the claim 1, it is characterised in that: the neutron irradiation detection analysis processing
The quantity of device is one or more；
When the quantity of the neutron irradiation detection analysis processing unit is multiple, the neutron irradiation detection analysis processing unit
Quantity it is equal with the quantity of the slow body, and multiple neutron irradiation detection analysis processing units and multiple slowing downs
Body corresponds.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110018513A (en) * | 2019-05-16 | 2019-07-16 | 东莞东阳光高能医疗设备有限公司 | A kind of neutron spectrometer of polyhedral structure |
| CN111190218A (en) * | 2020-01-10 | 2020-05-22 | 成都理工大学 | Neutron energy spectrum detection device and detection method for small sleeve |
| CN113655514A (en) * | 2021-07-19 | 2021-11-16 | 中国原子能科学研究院 | A lightweight design method and system for a multi-moderate neutron spectrometer |
| CN118330710A (en) * | 2024-05-20 | 2024-07-12 | 四川轻化工大学 | Device and method for measuring time series of neutron spectrum of single ball for water pumping and injection |
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| CN204740350U (en) * | 2015-01-26 | 2015-11-04 | 清华大学 | Multi-sphere neutron spectrometer and analyzer for multi-sphere neutron spectrometer |
| CN105785425A (en) * | 2016-04-26 | 2016-07-20 | 成都理工大学 | Water injection and drainage full-automatic multisphere neutron spectrometer and measurement method |
| CN107450090A (en) * | 2016-06-01 | 2017-12-08 | 南京中硼联康医疗科技有限公司 | Radiation dose measurement method |
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| CN204740350U (en) * | 2015-01-26 | 2015-11-04 | 清华大学 | Multi-sphere neutron spectrometer and analyzer for multi-sphere neutron spectrometer |
| CN105785425A (en) * | 2016-04-26 | 2016-07-20 | 成都理工大学 | Water injection and drainage full-automatic multisphere neutron spectrometer and measurement method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110018513A (en) * | 2019-05-16 | 2019-07-16 | 东莞东阳光高能医疗设备有限公司 | A kind of neutron spectrometer of polyhedral structure |
| CN110018513B (en) * | 2019-05-16 | 2024-01-26 | 中国科学院高能物理研究所 | Neutron spectrometer with polyhedral structure |
| CN111190218A (en) * | 2020-01-10 | 2020-05-22 | 成都理工大学 | Neutron energy spectrum detection device and detection method for small sleeve |
| CN111190218B (en) * | 2020-01-10 | 2022-09-30 | 四川轻化工大学 | Neutron energy spectrum detection device and detection method for small sleeve |
| CN113655514A (en) * | 2021-07-19 | 2021-11-16 | 中国原子能科学研究院 | A lightweight design method and system for a multi-moderate neutron spectrometer |
| CN118330710A (en) * | 2024-05-20 | 2024-07-12 | 四川轻化工大学 | Device and method for measuring time series of neutron spectrum of single ball for water pumping and injection |
| CN118330710B (en) * | 2024-05-20 | 2025-04-04 | 四川轻化工大学 | Device and method for measuring time series of neutron spectrum of single ball for water pumping and injection |
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|---|---|
| CN109061716B (en) | 2019-11-05 |
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