CN214042788U - Test device for realizing air sub-threshold breakdown through laser induction - Google Patents
Test device for realizing air sub-threshold breakdown through laser induction Download PDFInfo
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- CN214042788U CN214042788U CN202120269524.6U CN202120269524U CN214042788U CN 214042788 U CN214042788 U CN 214042788U CN 202120269524 U CN202120269524 U CN 202120269524U CN 214042788 U CN214042788 U CN 214042788U
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Abstract
The utility model discloses a laser-induced test device for realizing air subthreshold breakdown, which comprises a bottom plate and a laser arranged on one side of the bottom plate, wherein a first transparent plate, an anode plate, a simulation particle ball, a cathode plate and a second transparent plate are sequentially arranged on the bottom plate along the laser beam direction of the laser, the first transparent plate is fixedly connected with the anode plate, the second transparent plate is fixedly connected with the cathode plate, a round hole is arranged on the first transparent plate and the anode plate just opposite to the laser beam, and the simulation particle ball is fixed by an insulating support frame and concentrically arranged with the round hole on the anode plate; the test device of the utility model can clearly show the breakdown process and the discharge path change process, can be better used for the basic research of laser induced discharge, and provides a theoretical basis for the control of large and micro discharge paths; test device simple structure, reasonable in design, low cost, convenient operation, process of the test and result are clear visible.
Description
[ technical field ] A method for producing a semiconductor device
The utility model belongs to the technical field of the laser-induced discharge, in particular to laser-induced realizes test device that air subthreshold punctures.
[ background of the invention ]
When the laser power density of a high-power laser beam focus area in the atmosphere exceeds a certain threshold value, atmospheric molecules are quickly ionized, strong absorption occurs in the area, the temperature is quickly increased, a plasma channel is formed, meanwhile, the plasma area strongly absorbs laser energy, a shielding effect is formed, and the plasma channel is prevented from being enlarged. The research work of generating plasma through laser-induced air breakdown has very important theoretical and practical values in the fields of lightning prevention and control, anti-micro laser weapons, laser nuclear fusion and the like.
With the increasingly compact application and combination of laser-induced plasma and air discharge, the basic physical process of laser-induced discharge has also been widely studied; however, the prior art does not have a test device capable of demonstrating the important process, and can not provide theoretical basis for scientists studying the process.
[ Utility model ] content
The utility model aims at the defect that prior art exists, provide a simple structure, reasonable in design, low cost, but the induced test device that realizes the sub-threshold value breakdown of air of laser of effective control direction of discharging.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a laser induction realizes test device of sub-threshold value breakdown of air, includes the bottom plate and sets up the laser instrument in bottom plate one side, has set gradually first transparent plate, anode plate, simulation particle ball, negative plate, second transparent plate along the laser beam direction of laser instrument on the bottom plate, first transparent plate and anode plate fixed connection, second transparent plate and negative plate fixed connection all set up a round hole to the position of laser beam on first transparent plate and the anode plate, simulation particle ball is fixed through insulating support frame, and sets up with the round hole on the anode plate is concentric.
Preferably, the anode plate and the cathode plate are both copper electrodes, and the bottoms of the anode plate and the cathode plate are respectively provided with a conductor bar which is connected with a power supply.
Preferably, the material of bottom plate, first transparent plate and second transparent plate is epoxy, first transparent plate and second transparent plate are as the insulating adhesion background of anode plate and negative plate respectively, and high temperature resistant, corona resistant is effectual moreover, can weaken the corona discharge corrosion at electrode edge.
Preferably, the diameter of the simulated particle ball is 0.1-1 mm, and the insulating support frame and the simulated particle ball are made of polytetrafluoroethylene, so that the simulated particle ball can bear the high temperature of the laser beam and has good stability.
Preferably, the upper surface of the bottom plate is provided with guide rails along the length direction of the bottom plate, and the bottoms of the first transparent plate and the second transparent plate are respectively provided with a sliding block which is in sliding connection with the bottom plate, so that the distance between the anode plate and the cathode plate can be adjusted.
Preferably, the guide rail and the slider are made of epoxy resin.
Compared with the prior art, the utility model discloses following beneficial effect has:
the test device of the utility model can clearly show the breakdown process and the discharge path change process, can be better used for the basic research of laser induced discharge, and provides a theoretical basis for the control of large and micro discharge paths;
test device simple structure, reasonable in design, low cost, convenient operation, process of the test and result are clear visible.
[ description of the 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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of a testing device according to the present invention;
FIG. 2 is a front view of the test device of the present invention;
wherein: 1-a bottom plate; 101-a guide rail; 2-a laser; 3-a first transparent plate; 4-an anode plate; 5-simulated particle spheres; 6-a cathode plate; 7-a second transparent plate; 8-an insulating support frame; 9-a wire bar; 10-a slide block.
[ detailed description ] embodiments
To make the objects, technical solutions and advantages of the present invention clearer, the present invention will be further described below with reference to the accompanying drawings and specific embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1 and 2, the utility model provides a laser induction realizes test device of sub-threshold breakdown of air, including bottom plate 1 and the laser instrument 2 of setting in bottom plate 1 one side, the laser instrument, including bottom plate 1, first transparent plate 3, anode plate 4, simulation particle ball 5, cathode plate 6, second transparent plate 7 have set gradually along laser instrument 2's laser beam direction on bottom plate 1, first transparent plate 3 and anode plate 4 fixed connection, second transparent plate 7 and cathode plate 6 fixed connection, and just all set up a round hole to the position of laser beam on first transparent plate 3 and the anode plate 4, simulation particle ball 5 passes through insulation support frame 8 to be fixed on bottom plate 1, and with the concentric setting of round hole on the anode plate, the diameter of round hole is greater than the diameter of simulation particle ball.
Preferably, the anode plate 4 and the cathode plate 6 are both copper electrodes, and the bottoms of the anode plate 4 and the cathode plate 6 are respectively provided with a conductor bar 9 and are connected with a power supply through the conductor bar 9.
Preferably, the bottom plate 1, the first transparent plate 3 and the second transparent plate 7 are made of epoxy resin, the first transparent plate 3 and the second transparent plate 7 are respectively used as insulating adhesion backgrounds of the anode plate 4 and the cathode plate 6, and are high-temperature resistant, good in corona resistance effect and capable of weakening corona discharge corrosion at the edge of an electrode.
Preferably, the diameter of the simulated particle ball 5 is 0.1-1 mm, and the insulating support frame 8 and the simulated particle ball 5 are made of polytetrafluoroethylene, so that the simulated particle ball can bear the high temperature of the laser beam and has good stability.
Preferably, the upper surface of the bottom plate 1 is provided with a guide rail 101 along the length direction thereof, the bottoms of the first transparent plate and the second transparent plate are respectively provided with a slide block 10, and the slide blocks 10 are slidably connected with the guide rail 101 on the bottom plate, so that the distance between the anode plate 4 and the cathode plate 6 can be adjusted.
Preferably, the sliding block 10 is provided with a self-locking structure, and after the distance between the two electrode plates is adjusted, the sliding block can be fixed by the self-locking structure.
Laser rangefinder's working process: connecting the anode plate and the cathode plate with the anode and the cathode of a high-voltage power supply through leads in the lead bars respectively, discharging at the edges of the anode plate and the cathode plate, turning on a laser, making laser beams emitted by the laser sequentially pass through round holes on the first transparent plate and the anode plate and irradiate to the simulated particle balls, heating the simulated particle ball to 150-350 ℃, which causes the air density around the simulated particle ball to be reduced and the electron mean free path AMEp to be increased, in the high temperature area, the Thomson ionization coefficient alpha is obviously increased, the discharge threshold value is reduced, so that a discharge path with smaller electric field than the normal discharge path is formed, thereby changing the discharge path, the initial discharge occurs at the edge of the electrode, when the simulated particle ball is irradiated by the laser, the discharge will directly pass through the simulated particle ball and develop along the direction of the laser beam (the arc is changed from the edge area to the middle area of the laser beam where the simulated particle ball is located).
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a laser induction realizes test device of sub-threshold value breakdown of air, its characterized in that, includes the bottom plate and sets up the laser instrument in bottom plate one side, has set gradually first transparent plate, anode plate, simulation particle ball, negative plate, second transparent plate along the laser beam direction of laser instrument on the bottom plate, first transparent plate and anode plate fixed connection, second transparent plate and negative plate fixed connection all set up a round hole to the position of laser beam on first transparent plate and the anode plate, simulation particle ball is fixed through insulating support frame, and sets up with the round hole on the anode plate is concentric.
2. The test device for realizing air subthreshold breakdown under laser induction according to claim 1, wherein the anode plate and the cathode plate are both copper electrodes, and the bottoms of the anode plate and the cathode plate are respectively provided with a wire guide bar which is connected with a power supply.
3. The laser-induced air subthreshold breakdown test device according to claim 1, wherein the bottom plate, the first transparent plate and the second transparent plate are made of epoxy resin.
4. The device for testing the achievement of the air sub-threshold breakdown through the laser induction as claimed in claim 1, wherein the diameter of the simulated particle ball is 0.1-1 mm, and the insulating support frame and the simulated particle ball are made of polytetrafluoroethylene.
5. The laser-induced air subthreshold breakdown test device according to claim 1, wherein the upper surface of the bottom plate is provided with a guide rail along the length direction of the bottom plate, and the bottoms of the first transparent plate and the second transparent plate are respectively provided with a sliding block which is connected with the bottom plate in a sliding manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120269524.6U CN214042788U (en) | 2021-01-29 | 2021-01-29 | Test device for realizing air sub-threshold breakdown through laser induction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120269524.6U CN214042788U (en) | 2021-01-29 | 2021-01-29 | Test device for realizing air sub-threshold breakdown through laser induction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214042788U true CN214042788U (en) | 2021-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120269524.6U Active CN214042788U (en) | 2021-01-29 | 2021-01-29 | Test device for realizing air sub-threshold breakdown through laser induction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214042788U (en) |
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2021
- 2021-01-29 CN CN202120269524.6U patent/CN214042788U/en active Active
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