CN103968882B - Microwave and the interactional testing arrangement of weak magnetopasma - Google Patents
Microwave and the interactional testing arrangement of weak magnetopasma Download PDFInfo
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- CN103968882B CN103968882B CN201410219186.XA CN201410219186A CN103968882B CN 103968882 B CN103968882 B CN 103968882B CN 201410219186 A CN201410219186 A CN 201410219186A CN 103968882 B CN103968882 B CN 103968882B
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Abstract
Microwave and the interactional testing arrangement of weak magnetopasma, relate to a kind of testing arrangement. In order to solve the problem that lacks at present the device that obtains microwave and Plasma Interaction. The microwave that its microwave source produces is exported to ferrite insulation attenuator, the microwave of ferrite insulation attenuator output inputs to directional coupler, the microwave of directional coupler output inputs to a port of first paragraph waveguide after vacuum microwave window transmission, another port of first paragraph waveguide is communicated with the narrow port of excessive cone pipe by piston, excessively the wide port of cone pipe and a port of second segment waveguide are communicated with, another port of second segment waveguide is fixed with suction carrier load, and the below of described suction carrier load is provided with vacuum pump system; In second segment waveguide between excessive cone pipe and suction carrier load, be disposed with plasma generator and probe system. It is for measuring microwave and the interactional experiment parameter of weak magnetopasma.
Description
Technical field
The present invention relates to a kind of testing arrangement, particularly a kind of microwave and the interactional testing arrangement of weak magnetopasma.
Background technology
At present, the black barrier problem of hypersonic vehicle is extensively present in space plasma subject. Because black barrier is aerospace craftA difficult problem for telemetry communication in Returning ball process. Research finds, speed in atmosphere of it and aerospace craft, highly, severalThe factor close relations such as what external form, thrust and material, it is still in research and stage of exploring so far. So-called black barrier,Be exactly when the aerospace crafts such as satellite, space shuttle, intercontinental missile, spaceship are during with ultraspeed atmospheric reentry, withAtmospheric friction makes spacecraft surface produce the fine and close plasma sheath of one deck, because plasma density is very high, outside makingBoundary's electromagnetic wave cannot reflect, at certain height and the liaison severe exacerbation in the time and between ground, even completely inDisconnected, this phenomenon is called as " black barrier ". The appearance of black barrier, has brought very large harm to Spacecraft reentry atmosphere. WhenWhen satellite returns, black barrier can make to satellite catch increase difficulty, the drop point of satellite cannot be accurately calculated on ground, searches to commanderRecover receipts army and bring certain difficulty, postpone the recovery time of satellite, What is more can not find satellite. Manned universe is flownShip or space shuttle, spacefarer returns to safely the key that ground is manned space flight success or failure, and the returning of spacecraftReentry stage is multiple section of accident. Therefore, the each state in the whole world all breaks through black barrier problem concentrated, but due to current technological meansStill imperfect, therefore mainly concentrate on theoretical research and ground simulation for the research of black barrier. And produce in ground simulation etc.Plasma source and electromagnetic wave between interaction be the key point of determination result.
When microwave and Plasma Interaction, plasma has the ability of certain absorption and reflection to microwave, simultaneously micro-Also can there is the effects such as heating by plasma in ripple, its mutual mechanism of action is very complicated, at present this understanding is still not clear,Therefore be badly in need of one can both interact, and the device of its exercising result therefrom.
Summary of the invention
The object of the invention is the problem that lacks at present the device that obtains microwave and Plasma Interaction in order to solve, thisBright a kind of microwave and the interactional testing arrangement of weak magnetopasma of providing.
Microwave of the present invention and the interactional testing arrangement of weak magnetopasma, it comprises microwave source, ferrite insulation decayDevice, directional coupler, vacuum microwave window, first paragraph waveguide, piston, excessive cone pipe, second segment waveguide, suction rippleLoad, vacuum pump system, probe system and plasma generator;
The microwave that microwave source produces is exported to ferrite insulation attenuator, and the microwave input of ferrite insulation attenuator output is givenTo coupler, the microwave of directional coupler output inputs to a port of first paragraph waveguide after vacuum microwave window transmission,Another port of first paragraph waveguide is communicated with the excessive narrow port of cone pipe by piston, excessively the wide port of cone pipe andA port of second segment waveguide is communicated with, and another port of second segment waveguide is fixed with suction carrier load, and described suction ripple is negativeThe below of carrying is provided with vacuum pump system;
In second segment waveguide between excessive cone pipe and suction carrier load, be disposed with plasma generator and probeSystem.
Beneficial effect of the present invention is, ferrite insulation attenuator can regulate the micro-wave frequency and the intensity that enter waveguide;Plasma generator can regulate plasma parameter by the mode of regulation voltage, makes it to meet the required precision of experiment; ThisIn invention total system, comprise plasma generator and microwave source, not only can directly observe microwave under different primary conditionWith the interaction process of plasma, owing to being the source that internal system produces, therefore can be to produced plasmaGeneration secondary stains, and the result that experiment obtains is more true and reliable.
Brief description of the drawings
Fig. 1 is the interactional testing arrangement principle schematic of microwave of the present invention and weak magnetopasma.
Fig. 2 is the principle schematic of the detecting head described in detailed description of the invention three.
Detailed description of the invention
Detailed description of the invention one: in conjunction with Fig. 1, present embodiment is described, microwave and weak magnetopasma described in present embodimentInteractional testing arrangement, it comprises microwave source 1, ferrite insulation attenuator 2, directional coupler 3, vacuum microwaveWindow 4, first paragraph waveguide 5, piston 6, excessive cone pipe 8, second segment waveguide 9, suction carrier load 10, vavuum pump systemSystem, probe system and plasma generator 16;
The microwave that microwave source 1 produces is exported to ferrite insulation attenuator 2, and the microwave that ferrite insulation attenuator 2 is exported is defeatedEnter to directional coupler 3, the microwave that directional coupler 3 is exported inputs to first paragraph waveguide after 4 transmissions of vacuum microwave windowA port of 5, another port of first paragraph waveguide 5 is communicated with the narrow port of excessive cone pipe 8 by piston 6,Excessively the wide port of cone pipe 8 and a port of second segment waveguide 9 are communicated with, another port of second segment waveguide 9Be fixed with and inhale carrier load 10, the below of described suction carrier load 10 is provided with vacuum pump system;
In second segment waveguide 9 between excessive cone pipe 8 and suction carrier load 10, be disposed with plasma generator16 and probe system.
In the present embodiment, the microwave that microwave source 1 produces is successively by the ferrite attenuator 2 with insulating barrier, fixedTo coupler 3, sealing vacuum microwave window 4 and be connected with first paragraph waveguide 5. The microwave producing when original microwave sourceDuring by said apparatus, the microwave of output is the required intensity wave of experiment. In the time of required microwave intensity and frequency difference, can lead toCross adjustment ferrite attenuator 2 and make it to meet experimental precision, and utilize directional coupler 3 to detect and verify the standard of this controlReally property;
In the time that reality is tested, first open vacuum pump system, interior second segment waveguide 9 working environment is evacuated to meet to test and wantsThe vacuum of asking; Use power supply to switch on to plasma generator 16, plasma generator 16 is to second segment waveguide 9Middle ejaculation plasma, its density is determined by supply voltage. Then utilize microwave source 1 to produce required microwave, and pass through ironOxysome insulation attenuator 2 regulates its frequency, makes it to meet experiment required. The microwave producing by the vacuum microwave window 4 of sealingEnter the concurrent looks mutual effect in the region contacting with plasma. In second segment waveguide 9, there is phase with microwave in plasmaMutual effect, finally obtains experimental data by the probe system being placed in second segment waveguide 9, is finally inhaling carrier load10 places are absorbed;
Described pumping source can be by the vacuum degree control in total system at 0～10-4pa。
Detailed description of the invention two: present embodiment is that the microwave described in detailed description of the invention one and weak magnetopasma are done mutuallyWith the further restriction of testing arrangement, it also comprises resonance window 7;
Described resonance window 7 is positioned at piston 6 and is communicated with the narrow port of excessive cone pipe 8.
Detailed description of the invention three: in conjunction with Fig. 2, present embodiment is described, present embodiment is to one or two of detailed description of the inventionThe further restriction of the microwave of stating and the interactional testing arrangement of weak magnetopasma, probe system comprises detecting head 13 HesElectromagnetic microwave probe 14;
Electromagnetic microwave probe 14 is for detection of the experiment parameter of plasma, and detecting head 13 is for detection of the density of plasma.
The experiment parameter of described plasma comprises a lot, for example: plasma temperature, plasma collision frequency etc.; ButThe density that electromagnetic microwave probe 14 can not be measured plasma, so increased detecting head 13.
Electromagnetic microwave probe 14 is positioned at the second segment waveguide 9 on plasma generator 16 right sides, and detecting head 13 is positioned atIn the second segment waveguide 9 on electromagnetic microwave probe 14 right sides.
As shown in Figure 2, described detecting head 13 comprises microwave antenna 15, coaxial guide pipe 17, insulated coverings 18 and rightClaim balancing segment 19.
Detailed description of the invention four: present embodiment is that the microwave described in detailed description of the invention three and weak magnetopasma are done mutuallyWith the further restriction of testing arrangement, described plasma generator 16, detecting head 13 and electromagnetic microwave probe 14 are equalArrange with 9 insulation of second segment waveguide.
Detailed description of the invention five: present embodiment is that the microwave described in detailed description of the invention four and weak magnetopasma are done mutuallyWith the further restriction of testing arrangement,
The internal diameter of described second segment waveguide 9 is 14mm.
Detailed description of the invention six: present embodiment is that the microwave described in detailed description of the invention four and weak magnetopasma are done mutuallyWith the further restriction of testing arrangement, described microwave source 1 is for producing power P=1MW, burst length τ=2/40usThe microwave source of pulse microwave.
Claims (6)
1. microwave and the interactional testing arrangement of weak magnetopasma, is characterized in that being, it comprise microwave source (1),Ferrite insulation attenuator (2), directional coupler (3), vacuum microwave window (4), first paragraph waveguide (5), alivePlug (6), excessive cone pipe (8), second segment waveguide (9), suction carrier load (10), vacuum pump system, probe systemThe plasma generator (16) of unifying;
The microwave that microwave source (1) produces is exported to ferrite insulation attenuator (2), ferrite insulation attenuator (2) outputMicrowave input to directional coupler (3), the microwave of directional coupler (3) output is defeated after vacuum microwave window (4) transmissionEnter a port to first paragraph waveguide (5), another port of first paragraph waveguide (5) is by piston (6) and mistakeThe narrow port of degree cone pipe (8) is communicated with, excessively the wide port of cone pipe (8) and a port of second segment waveguide (9)Be communicated with, another port of second segment waveguide (9) is fixed with inhales carrier load (10), under described suction carrier load (10)Side is provided with vacuum pump system;
In second segment waveguide (9) between excessive cone pipe (8) and suction carrier load (10), be disposed with plasmaBody generator (16) and probe system.
2. microwave according to claim 1 and the interactional testing arrangement of weak magnetopasma, is characterized in that, itAlso comprise resonance window (7);
Described resonance window (7) is positioned at the narrow port connectivity part of piston (6) and excessive cone pipe (8).
3. microwave according to claim 1 and 2 and the interactional testing arrangement of weak magnetopasma, is characterized in that,Probe system comprises detecting head (13) and electromagnetic microwave probe (14);
Electromagnetic microwave probe (14) is for detection of the experiment parameter of plasma, and detecting head (13) is for detection of plasmaDensity.
4. microwave according to claim 3 and the interactional testing arrangement of weak magnetopasma, is characterized in that instituteState plasma generator (16), detecting head (13) and electromagnetic microwave probe (14) all exhausted with second segment waveguide (9)Edge arranges.
5. microwave according to claim 4 and the interactional testing arrangement of weak magnetopasma, is characterized in that,
The internal diameter of described second segment waveguide (9) is 14mm.
6. microwave according to claim 4 and the interactional testing arrangement of weak magnetopasma, is characterized in that instituteState the microwave source of microwave source (1) for the pulse microwave of generation power P=1MW, burst length τ=2/40us.
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| CN105657951B (en) * | 2016-03-22 | 2018-06-12 | 东北石油大学 | H in circular waveguide11The heating unit of pattern electromagnetic wave plasma |
| CN107278011A (en) * | 2016-04-07 | 2017-10-20 | 东北林业大学 | rectangular waveguide microwave and plasma interaction device |
| CN107278012A (en) * | 2016-04-07 | 2017-10-20 | 东北林业大学 | circular waveguide microwave and plasma interaction device |
| CN107271454B (en) * | 2016-04-07 | 2020-04-21 | 台州学院 | Microwave and magnetized plasma interaction device |
| CN108872267B (en) * | 2018-07-06 | 2021-03-30 | 电子科技大学 | Plasma complex dielectric constant transient microwave reflection measurement method and device |
| CN111765058B (en) * | 2019-04-02 | 2022-07-05 | 哈尔滨工业大学 | Cusp field thruster for microwave-enhanced auxiliary ionization |
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| CN2458622Y (en) * | 2000-11-15 | 2001-11-07 | 中国科学院金属研究所 | Pulse microwave intensified high-voltage low-temp plasma chemical reactor |
| CN101123844A (en) * | 2007-09-12 | 2008-02-13 | 清华大学 | Microwave plasm reaction cavity |
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| CN103354946A (en) * | 2010-12-23 | 2013-10-16 | 六号元素有限公司 | A microwave plasma reactor for manufacturing synthetic diamond material |
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| CN2458622Y (en) * | 2000-11-15 | 2001-11-07 | 中国科学院金属研究所 | Pulse microwave intensified high-voltage low-temp plasma chemical reactor |
| CN101243534A (en) * | 2005-08-15 | 2008-08-13 | 爱德华兹有限公司 | Microwave plasma reactor |
| CN101123844A (en) * | 2007-09-12 | 2008-02-13 | 清华大学 | Microwave plasm reaction cavity |
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Effective date of registration: 20190617 Address after: 150000 Heilongjiang Harbin Dalian economic and Trade Zone, the North Road and Xingkai Road intersection Patentee after: Harbin University of Technology Robot Group Co., Ltd. Address before: 150001 No. 92 West straight street, Nangang District, Heilongjiang, Harbin Patentee before: Harbin Institute of Technology |