CN108807112A - A kind of interdigital arrangement high-power pulsed ion beams of coaxial double dielectrics - Google Patents
A kind of interdigital arrangement high-power pulsed ion beams of coaxial double dielectrics Download PDFInfo
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- CN108807112A CN108807112A CN201810608551.4A CN201810608551A CN108807112A CN 108807112 A CN108807112 A CN 108807112A CN 201810608551 A CN201810608551 A CN 201810608551A CN 108807112 A CN108807112 A CN 108807112A
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- 239000003989 dielectric material Substances 0.000 title claims abstract description 26
- 238000010884 ion-beam technique Methods 0.000 title claims abstract description 17
- 239000004020 conductor Substances 0.000 claims abstract description 19
- 238000010894 electron beam technology Methods 0.000 claims abstract description 17
- 230000004323 axial length Effects 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000012546 transfer Methods 0.000 abstract description 2
- 238000011161 development Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 4
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- 239000002360 explosive Substances 0.000 description 3
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000005466 cherenkov radiation Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 239000007770 graphite material Substances 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
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- 229910001220 stainless steel Inorganic materials 0.000 description 2
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
- H01J23/02—Electrodes; Magnetic control means; Screens
- H01J23/09—Electric systems for directing or deflecting the discharge along a desired path, e.g. E-type
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Abstract
The invention discloses a kind of interdigital arrangement high-power pulsed ion beams of coaxial double dielectrics,Including outer barrel,It is provided with cathode in the outer barrel,The coaxial inner conductor being arranged on outer barrel axis direction,The cathode and coaxial inner conductor are coaxial,It is characterized in that being filled with concentric dielectric between the outer barrel and coaxial inner conductor,The concentric dielectric is two kinds of dielectrics that cycle staggering is filled and dielectric coefficient is different,There is the concentric dielectric loop configuration to form concentric dielectric chamber,The concentric dielectric is divided into interior by concentric dielectric chamber,The outer concentric dielectric of two parts,Two kinds of dielectrics of interior concentric dielectric and outer concentric dielectric are in interdigital arrangement,The intense relative annular electron beam of emission of cathode passes through introduction by magnetic field,It is transmitted the device of the present invention using the above structure in concentric dielectric intracavitary,So that microwave is totally reflected in the medium of transmission,To enhance the clustering of electron beam,Improve beam wave transfer efficiency.
Description
Technical field
The invention belongs to high-power pulsed ion beams technical fields, and in particular to a kind of interdigital arrangement Gao Gong of coaxial double dielectrics
Rate microwave device.
Background technology
It is within the scope of 1~300GHz that High-Power Microwave (HPM), which generally refers to peak power in 100MW or more, working frequency,
Electromagnetic wave.The research and development of High-Power Microwave technology and microwave device has more than 30 years history, in recent years, with arteries and veins
The continuous development of power technology and plasma physics is rushed, High-Power Microwave technology is quickly grown, especially in High-Power Microwave
Great progress is achieved in terms of the development in source.Up to the present, power level has improved several compared to conventional microwave source
Magnitude is widely used in multiple scientific domains, and to also make High-Power Microwave become a new technology, it is by means of existing
Great power and energy reserve ability for strong relativistic electron beam technology are just sent out towards the direction of shorter wavelength and ultra high power
Exhibition.
Up to the present, the development of High-Power Microwave has passed by what the pure new concept that single power is pursued was explored
Stage, research emphasis are transferred into related with High-Power Microwave practical application more careful technical.Wherein, it improves high
Power microwave source system generation efficiency and single pulse energy, system compact, Integration Design and the intelligent high power of development
Microwave device is the main research of current High-Power Microwave source technology.The further functionization of high-power pulsed ion beams is small
Type.
The charged particle moved along dielectric surface will generate Qie Lunke when speed is more than the light velocity of the Propagation
Husband radiates.When transmitting a beam electrons in being partially filled with Medium Wave Guide, this radiation can be decomposed into the various patterns in waveguide
Ingredient, when electron beam velocity is close and more than the wherein phase velocity of some pattern, the interaction quilt of this pattern and electron beam
Amplification, to generate the stimulated radiation that is concerned with, here it is Cerenkov radiation devices.
In medium Cerenkov radiation oscillator, slow-wave structure be not a metallic walls be in periodically variable waveguide, and
It is one and is lined with one layer of constant ε in coaxial metal circular waveguide inner surface1More than permittivity of vacuum ε0Dielectric coaxial dielectric
Waveguide.Since slow-wave structure is not periodic, dispersion curve of its dispersion curve more like cylindrical waveguide.Effective electricity of waveguide
Dielectric constant εeffPositioned at ε0And ε1Between, its value is decided by overall system architecture size.When dielectric thickness increases, it is
The effective dielectric constant of system is to ε1Increase, output frequency is caused to reduce.Dielectric is replaced when using the big dielectric of dielectric constant values instead
When the small dielectric of constant makees lining, it can more effectively slow down structure mould phase velocity, will also output frequency be caused to reduce.
Radiation microwave group velocity is always positive when Single Medium waveguide dispersion curve may be noted that resonance.The device of this structure
Part does not have anti-wave medium Cerenkov device, only traveling wave medium Cerenkov device.
Invention content
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of enhancing strong current electron beam clustering, improve beam
The high-power pulsed ion beams of coaxial double interdigital arrangements of dielectric of wave transfer efficiency.
The present invention to achieve the above object, is achieved through the following technical solutions：
A kind of coaxial double interdigital arrangement high-power pulsed ion beams of dielectric, including outer barrel, be provided in the outer barrel cathode,
The coaxial inner conductor being arranged on outer barrel axis direction, the cathode and coaxial inner conductor are coaxial, it is characterised in that the outer barrel
Concentric dielectric is filled between coaxial inner conductor, the concentric dielectric is that cycle staggering is filled and dielectric coefficient is different
Two kinds of dielectrics, the concentric dielectric have a loop configuration concentric dielectric chamber, the concentric dielectric passes through same
Axis dielectric cavity be divided into, the outer concentric dielectric of two parts, two kinds of dielectrics of interior concentric dielectric and outer concentric dielectric are in
The intense relative annular electron beam of interdigital arrangement, emission of cathode is transmitted by introduction by magnetic field in concentric dielectric intracavitary.
In the above-mentioned technical solutions, the outer concentric dielectric and the respective two kinds of dielectrics of interior concentric dielectric are along outer barrel
Axis direction is filled in cycle staggering.
In the above-mentioned technical solutions, the concentric dielectric chamber is vacuum chamber.
In the above-mentioned technical solutions, one end of the concentric dielectric chamber be provided with outer barrel metallic plate connected vertically,
The annular inlet that guiding strong current electron beam enters concentric dielectric intracavitary, the annular inlet are provided on the metallic plate
Caliber size it is identical as the diameter of concentric dielectric chamber.
In the above-mentioned technical solutions, the end of concentric dielectric is provided with pyramidal structure metallic cylinder, pyramidal structure
Horn structure is formed in the pyramidal structure that cylinder is connect with interior concentric dielectric, outer concentric dielectric, horn structure diameter is along outer
Cylinder axis direction increases, until barrel bore is identical as the diameter of coaxial metal waveguide.
In the above-mentioned technical solutions, the dielectric axial length of one of which is L1, device generation microwave is in the medium
The wavelength of propagation is λ1, then meet：
Wherein, n is odd number.
In the above-mentioned technical solutions, another dielectric axial length is L2, device generate microwave passed in the medium
The wavelength broadcast is λ2, then meet：
Wherein, n is odd number.
In conclusion by adopting the above-described technical solution, the invention has the advantages that：
It is that cycle staggering is filled in outer barrel that the high-power pulsed ion beams of the present invention, which use concentric dielectric, concentric dielectric,
Two kinds of dielectrics between inner wall and coaxial inner conductor, and two kinds of dielectric dielectric coefficients are different, interior concentric dielectric
Two kinds of dielectrics of two kinds of dielectrics and outer concentric dielectric are in interdigital arrangement between each other.Device generates High-Power Microwave, together
The dielectric axial length of axis is about the odd-multiple of the wavelength half of High-Power Microwave.Exactly two kinds of dielectric intersection rows
Row design so that microwave is totally reflected in the medium of transmission, to enhance the clustering of electron beam, improves beam wave conversion effect
Rate.
Description of the drawings
Fig. 1 is the overall structure diagram of coaxial double interdigital arrangement high-power pulsed ion beams of dielectric of the present invention.
Wherein：1, cathode, 2, outer barrel, 3, metal circular waveguide, 4, a kind of electricity that dielectric constant is smaller in coaxial dielectric waveguide
Medium, 5, a kind of dielectric that dielectric constant is larger in coaxial dielectric waveguide, 6, pyramidal structure, 7, intense relative annular electron beam, 8,
Coaxial inner conductor.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
The interdigital arrangement high-power pulsed ion beams of a kind of coaxial double dielectrics as shown in Figure 1, including outer barrel, set in outer barrel
Be equipped with cathode and coaxial inner conductor, coaxial inner conductor outer barrel axis direction and with cathode it is coaxial.Cathode generally uses graphite
Material preparation forms, and intense relative annular electron beam is generated by the electric field force explosive emission between anode and cathode.Intense relative annular electron beam
Under introduction by magnetic field, axial transmission is carried out in the vacuum chamber that concentric dielectric is constituted, the selection of voltage and beam intensity needs
Consider device architecture form, and then optimizes.Outer barrel generally uses magnetism-free stainless steel or oxygenless copper material system
Standby to form, effect is to carry out axial transmission to High-Power Microwave.
The concentric dielectric of two kinds of different dielectric coefficients, coaxial electrical are periodically filled between outer tube inner wall and coaxial inner conductor
Medium is supported by outer barrel.Dielectric axial length is about that device generates microwave at two points of the media wavelength
One of odd-multiple.That is the dielectric dielectric constant of one of which is relatively small in two kinds of dielectrics, this is dielectric axial long
Degree is L1, it is λ that device, which generates microwave in the wavelength of the media,1, then meet：Specific axial length needs
Consider device healthy tendency structure size, and then optimizes.Another dielectric electric constant that connects is in two kinds of dielectrics
In it is relatively large, dielectric axial length be L2, it is λ that device, which generates microwave in the wavelength of the media,2, then meet：Specific axial length needs to consider device overall structure size, and then optimizes.N is equal in formula
For odd number.
There is concentric dielectric a loop configuration concentric dielectric chamber extended along outer barrel axis direction, such coaxial electrical to be situated between
Matter chamber is that concentric dielectric has been divided into two parts by concentric dielectric chamber.A portion is concentric dielectric chamber outer diameter and outer barrel
Between outer concentric dielectric (i.e. outer waveguide), another part is interior same between concentric dielectric intracavitary diameter and coaxial inner conductor
Axis dielectric (i.e. inner waveguide).Two kinds of dielectrics between outer waveguide and inner waveguide are in interdigital arrangement, and including two kinds of dielectrics
Waveguide is identical with the structure size of outer waveguide.
One end of concentric dielectric chamber is initiating terminal, and initiating terminal is the metal cylinder with diameter, is provided with connect vertical with outer barrel
The metallic plate (i.e. metal circular waveguide) connect, is usually prepared by magnetism-free stainless steel or oxygenless copper material, and effect is to collect the moon
Pole explosive emission is produced without by the high energy electron of magnetically confined, is prevented high energy electron from bombarding dielectric, is caused dielectric property
It can destroy.Metallic plate is supported by coaxial inner conductor, and coaxial inner conductor is connect by supporting rod with outer barrel, is formed with outer barrel
Equipotential.Metallic plate is provided with annular inlet, for guiding strong current electron beam to enter concentric dielectric intracavitary, and ring-shaped pouring
The caliber size of entrance is identical as the diameter of concentric dielectric chamber.
The other end of concentric dielectric chamber is end, and end is connect with the pyramidal structure in outer barrel, i.e., outer concentric dielectric
Respectively corresponding pyramidal structure connects with interior concentric dielectric end, and corresponding circle between inside and outside concentric dielectric
Wimble structure forms bell mouth shape, and the diameter of conical structure reduces along the axis direction of outer barrel.With interior concentric dielectric, outer coaxial electrical
Horn structure is formed between the pyramidal structure of medium connection, horn structure diameter increases along outer barrel axis direction, until in outer barrel
Diameter is identical as the diameter of metallic plate.
Embodiment one
Cathode in device is prepared using graphite material, and ring is generated by the electric field force explosive emission between anode and cathode
The internal diameter of shape strong current electron beam, graphite cathode is 2.3cm, outer diameter 2.4cm.Intense relative annular electron beam leads under the guiding in magnetic field
It crosses annular inlet and enters concentric dielectric chamber and be transmitted, the guiding magnetic field intensity of electron beam is 0.6T, voltage 350kV,
Electric current is 1.6kA.The internal diameter of metal outer cylinder is two kinds of differences of 3.2cm, metal outer cylinder inner wall and the filling of coaxial inner conductor period
The structural parameters for the concentric dielectric filled on the dielectric of dielectric coefficient, metal outer cylinder inner wall and coaxial inner conductor outer wall and row
Row mode is completely the same.One of which dielectric Constant is 2.5, and the microwave of a length of 3.3cm of vacuum medium wave is in the medium
The half for propagating wavelength is 1.0cm；Another dielectric Constant is 9, and the microwave of a length of 3.3cm of vacuum medium wave is at this
The half of Propagation wavelength is 0.55cm, considers each structural parameters of device, optimized design in this example
The dielectric axial length of one of which is 3.6cm,；Another dielectric axial length is 2.45cm.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (7)
1. a kind of coaxial double interdigital arrangement high-power pulsed ion beams of dielectric, including outer barrel, be provided in the outer barrel cathode,
The coaxial inner conductor being arranged on outer barrel axis direction, the cathode and coaxial inner conductor are coaxial, it is characterised in that the outer barrel and
Concentric dielectric is filled between coaxial inner conductor, the concentric dielectric is that cycle staggering is filled and dielectric coefficient is different
Two kinds of dielectrics, the concentric dielectric have the concentric dielectric chamber of a loop configuration, and the concentric dielectric passes through coaxial
Dielectric cavity be divided into, the outer concentric dielectric of two parts, two kinds of dielectrics of interior concentric dielectric and outer concentric dielectric are in fork
Refer to arrangement, the intense relative annular electron beam of emission of cathode is transmitted by introduction by magnetic field in concentric dielectric intracavitary.
2. a kind of interdigital arrangement high-power pulsed ion beams of coaxial double dielectrics according to claim 1, it is characterised in that institute
Outer concentric dielectric and the respective two kinds of dielectrics of interior concentric dielectric is stated to fill in cycle staggering along outer barrel axis direction.
3. a kind of interdigital arrangement high-power pulsed ion beams of coaxial double dielectrics according to claim 1, it is characterised in that institute
It is vacuum chamber to state concentric dielectric chamber.
4. a kind of interdigital arrangement high-power pulsed ion beams of coaxial double dielectrics according to claim 1, it is characterised in that institute
State concentric dielectric chamber one end be provided with outer barrel metallic plate connected vertically, guiding high current electricity is provided on the metallic plate
Beamlet enters the annular inlet of concentric dielectric intracavitary, and the caliber size of the annular inlet is straight with concentric dielectric chamber
Diameter size is identical.
5. a kind of interdigital arrangement high-power pulsed ion beams of coaxial double dielectrics according to claim 1, it is characterised in that same
The dielectric end of axis is provided with pyramidal structure metallic cylinder, and pyramidal structure is in cylinder and interior concentric dielectric, outer coaxial
The pyramidal structure of dielectric connection forms horn structure, and horn structure diameter increases along outer barrel axis direction, until barrel bore
It is identical as the diameter of coaxial metal waveguide.
6. a kind of interdigital arrangement high-power pulsed ion beams of coaxial double dielectrics according to claim 1, it is characterised in that its
A kind of middle dielectric axial length is L1, it is λ that device, which generates microwave in the wavelength of the media,1, then meet：
Wherein, n is odd number.
7. a kind of interdigital arrangement high-power pulsed ion beams of coaxial double dielectrics according to claim 1, it is characterised in that another
A kind of dielectric axial length is L2, it is λ that device, which generates microwave in the wavelength of the media,2, then meet：
Wherein, n is odd number.
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| CN201810608551.4A CN108807112B (en) | 2018-06-13 | 2018-06-13 | Coaxial double-dielectric interdigital arrangement high-power microwave device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115241719A (en) * | 2022-07-21 | 2022-10-25 | 中国人民解放军国防科技大学 | A Trans-Four-band Relativistic Cherenkov Oscillator Based on Magnetic Field Tuning |
| CN115642378A (en) * | 2022-10-08 | 2023-01-24 | 长沙航天华成科技有限公司 | Coaxial Cerenkov type high-power microwave oscillator for collecting electrons based on outer waveguide wall |
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| CN206834306U (en) * | 2017-06-16 | 2018-01-02 | 中国工程物理研究院应用电子学研究所 | A kind of High-Power Microwave controllable multi-frequency dielectric media phase shift type mode converter |
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| US4494039A (en) * | 1982-10-19 | 1985-01-15 | The United States Of America As Represented By The Secretary Of The Navy | Gyrotron traveling-wave device including quarter wavelength anti-reflective dielectric layer to enhance microwave absorption |
| US8179045B2 (en) * | 2008-04-22 | 2012-05-15 | Teledyne Wireless, Llc | Slow wave structure having offset projections comprised of a metal-dielectric composite stack |
| CN102044398A (en) * | 2009-10-21 | 2011-05-04 | 中国科学院电子学研究所 | Distributed amplification gyro traveling wave tube amplifier |
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| CN115241719A (en) * | 2022-07-21 | 2022-10-25 | 中国人民解放军国防科技大学 | A Trans-Four-band Relativistic Cherenkov Oscillator Based on Magnetic Field Tuning |
| CN115642378A (en) * | 2022-10-08 | 2023-01-24 | 长沙航天华成科技有限公司 | Coaxial Cerenkov type high-power microwave oscillator for collecting electrons based on outer waveguide wall |
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