CN109358237A - The experiment porch and application method that a kind of plasma collision frequency influences electromagnetic propagation - Google Patents
The experiment porch and application method that a kind of plasma collision frequency influences electromagnetic propagation Download PDFInfo
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- CN109358237A CN109358237A CN201811125648.6A CN201811125648A CN109358237A CN 109358237 A CN109358237 A CN 109358237A CN 201811125648 A CN201811125648 A CN 201811125648A CN 109358237 A CN109358237 A CN 109358237A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
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Abstract
The experiment porch and application method that the invention discloses a kind of plasma collision frequencies to influence electromagnetic propagation, including experiment pedestal and experiment cavity, the experiment cavity is cylindrical structure, fixed lid is equipped on the top of experiment cavity, heating plate is installed in the lower wall of fixed lid, emitter is installed in the lower wall of heating plate, offer screw hole at the center of fixed lid and is bolted with anode bolt in screw hole.The experiment porch that plasma collision frequency provided by the invention influences electromagnetic propagation, gas completes electric discharge inside discharging chamber, and imports and export electromagnetic wave by microwave catheter, to investigate influence of the collision frequency to electromagnetic propagation.In the equipment course of work, plasma density can be controlled by strength of discharge, neutral gas density is controlled by the variation of neutral gas volume, to adjust collision frequency, and then investigate the influence that different collision frequency characteristics propagate electromagnetic field.The present invention has the characteristics that delicate structure, manipulation are easy.
Description
Technical field
The present invention relates to pilot plasma field, what specifically a kind of plasma collision frequency influenced electromagnetic propagation
Experiment porch and application method.
Background technique
Plasma is collection composed by the atom by positively charged ion, the electronics of negative electrical charge and some neutrality
Zoarium, macroscopically generally in electroneutral.Due to containing a large amount of charged particle, the basic process of plasma is by electric field and magnetic
The influence of field, while plasma also generates various effects to the propagation of electromagnetic field.The dielectric property of plasma obtains it
A variety of applications have constituted a new disciplines of electrician's development, have been widely used in military affairs, the energy, material, chemical industry and medicine etc.
Field.
Influence of the plasma to the propagation characteristic of electric field is the basis of plasma application, needed for different applications
Plasma characteristics are different, and the major parameter for characterizing plasma characteristics is plasma density and collision frequency, plasma
Volume density depends primarily on strength of discharge；And collision frequency and neutral gas density, electron density and electron temperature are related,
Variation characteristic is complex.Therefore influence of the plasma collision frequency to electromagnetic propagation is particularly significant, is plasma application
Basic theories.The present invention provides a kind of experiment porch that plasma collision frequency influences electromagnetic propagation, can pass through change
Experiment condition investigates different neutral gas density, the influence of different plasma density and electron temperature to electromagnetic propagation.
Summary of the invention
The purpose of the present invention is to provide a kind of experiment porch that plasma collision frequency influences electromagnetic propagation, with solution
Certainly the problems mentioned above in the background art.
To achieve the above object, the invention provides the following technical scheme:
A kind of experiment porch that plasma collision frequency influences electromagnetic propagation, including experiment pedestal and experiment cavity,
The experiment cavity is cylindrical structure, on the top of experiment cavity equipped with fixed lid, is equipped with and adds in the lower wall of fixed lid
Hot plate is equipped with emitter in the lower wall of heating plate, offers screw hole at the center of fixed lid and is bolted in screw hole
The contact position of anode bolt, anode bolt and fixed lid is equipped with cathode connection gasket, and the bottom end for testing cavity is equipped with piston cap,
Anode plate is installed in the inside of experiment cavity, is plugged with Langmuir probe on the right side wall of experiment cavity, tests cavity
It is connected with microwave ingress pipe on left side wall, tests and is connected with microwave delivery line on the right side wall of cavity.
Further, hand piston, one end of hand piston and the joint place of experiment cavity are installed in the piston cap
Equipped with sealing ring, the stretching experiment cavity other end of hand piston is equipped with handle.
Further, the contact position surrounding of the experiment cavity and heating plate is equipped with fastening nut and wiring gasket, real
The contact position surrounding for testing cavity and anode plate is equipped with fastening nut and wiring gasket, tests the contact position four of cavity and piston cap
It is equipped with fastening nut and wiring gasket week, is fastened by fastening nut, wiring is carried out by wiring gasket.
Further, the experiment pedestal is made of pedestal and support frame, and support frame top is and experiment chamber outer wall phase
Matched arc structure, for placing experiment cavity.
Further, the material of the experiment cavity is insulating materials, and experiment cavity includes discharge cavity, the upside of discharge cavity
Equipped with internal screw thread, for installing fixed lid, internal screw thread punishes cloth, and there are two symmetrical threaded holes, for installing heating plate,
Heating plate is made of an electrically conducting material, and is opened that there are two microwave mouths upper side position of discharge cavity or so is opposite, is respectively used to install micro-
Wave ingress pipe and microwave delivery line are provided with threaded hole simultaneously in the centre of discharge cavity and the two sides of lower position, are respectively used to sun
The installation of pole plate and piston cap.
Further, the anode plate includes plate body, and the shape of plate body is the circle matched with the internal diameter of experiment cavity,
It is uniformly provided with several ventholes on plate body, the fixation fastened for fastening nut is offered on the side wall of plate body
Slot.
Further, the specifically used method of experiment porch is the following steps are included: the piston cap includes lid, lid
Centre is hollow structure, and offers thread groove, and thread groove is matched with the external screw thread on hand piston, equal in the surrounding of lid
Offer the tapped through hole fastened for fastening nut.
Further, experiment porch specifically used method the following steps are included:
S1, the two poles of the earth that heating power supply is connected by the wiring gasket for heating board ends, carry out emitter by heating plate
Heating, so that emitter launches electronics；
S2, the anode of electrion power supply is passed through into wiring gasket jointed anode plate, cathode is connected by cathode connection gasket
Connect heating plate, for electronics under the action of discharge voltage, acceleration reaches anode plate, and with gas collisions in discharge cavity, generate ionization,
Carry out the experiment intracorporal continuous discharge of chamber；
S3, the electromagnetic wave that microwave source generates is introduced into inside plasma by microwave ingress pipe, and by microwave
Delivery line is connected to microwave measuring equipment, and measurement passes through microwave variation characteristic after plasma；
S4, plasma density is adjusted by the amplitude setting for adjusting discharge voltage, increases discharge voltage, strength of discharge
And plasma density increases, and reduces discharge voltage, strength of discharge and plasma density reduce, and measurement passes through after plasma
Microwave variation characteristic；
S5, the collision frequency that electronics and neutral gas are adjusted by the movement of rotating handle, measurement measurement by it is equal from
Microwave variation characteristic after daughter.
Compared with prior art, the beneficial effects of the present invention are:
A kind of experiment porch that plasma collision frequency influences electromagnetic propagation of the present invention, gas is inside discharging chamber
Electric discharge is completed, and imports and export electromagnetic wave by microwave catheter, to investigate influence of the collision frequency to electromagnetic propagation.If
In the standby course of work, plasma density can be controlled by strength of discharge, neutral gas is controlled by the variation of neutral gas volume
Volume density to adjust collision frequency, and then investigates the influence that different collision frequency characteristics propagate electromagnetic field.The present invention has
The easy feature of delicate structure, manipulation.
Detailed description of the invention
Fig. 1 is structure chart of the invention.
Fig. 2 is the structural schematic diagram that pedestal is tested in the present invention.
Fig. 3 is the structural schematic diagram that cavity is tested in the present invention.
Fig. 4 is the structural schematic diagram of middle-jiao yang, function of the spleen and stomach pole plate of the present invention.
Fig. 5 is the structural schematic diagram of piston cap in the present invention.
Appended drawing reference:
1. testing pedestal, 1-1. pedestal, 1-2. support frame, 2. experiment cavitys, 2-1. discharge cavity, 2-2. microwave mouth, 2-3.
Threaded hole, 2-4. internal screw thread, 3. fixed lids, 4. heating plates, 5. anode bolts, 6. cathode connection gaskets, 7. emitters, 8. fastenings
Nut, 9. wiring gaskets, 10. Langmuir probes, 11. microwave ingress pipes, 12. microwave catheters, 13. anode plates, 13-1. plate body,
13-2. venthole, 13-3. fixing groove, 14. hand pistons, 15. sealing rings, 16. piston caps, 16-1. lid, 16-2. screw thread
Slot, 16-3. tapped through hole, 17. handles.
Specific embodiment
In order to deepen the understanding of the present invention, the present invention will be described in further detail with reference to the examples below, implements below
Example for explaining only the invention, is not intended to limit the scope of the present invention..
Embodiment:
A kind of experiment porch that plasma collision frequency influences electromagnetic propagation, including experiment pedestal 1 and experiment cavity
2, the experiment cavity 2 is cylindrical structure, is equipped with fixed lid 3 on the top of experiment cavity 2, pacifies in the lower wall of fixed lid 3
Equipped with heating plate 4, emitter 7 is installed in the lower wall of heating plate 4, offers screw hole at the center of fixed lid 3 and in spiral shell
Anode bolt 5 is bolted in hole, anode bolt 5 and the contact position for fixing lid 3 are equipped with cathode connection gasket 6, test the bottom of cavity 2
End is equipped with piston cap 16, is equipped with anode plate 13 in the inside of experiment cavity 2, is plugged on the right side wall of experiment cavity 2
Langmuir probe 10 tests and is connected with microwave ingress pipe 11 on the left side wall of cavity 2, tests and is connected on the right side wall of cavity 2
Microwave delivery line 12；
Hand piston 14 is installed, one end of hand piston 14 and the joint place of experiment cavity 2 are set in the piston cap 16
There is sealing ring 15, stretching experiment 2 other end of cavity of hand piston 14 is equipped with handle 17；
The contact position surrounding of the experiment cavity 2 and heating plate 4 is equipped with fastening nut 8 and wiring gasket 9, tests cavity
2 are equipped with fastening nut 8 and wiring gasket 9 with the contact position surrounding of anode plate 13, test the contact position of cavity 2 and piston cap 16
Surrounding is equipped with fastening nut 8 and wiring gasket 9, is fastened by fastening nut 8, carries out wiring by wiring gasket 9；
The experiment pedestal 1 is made of pedestal 1-1 and support frame 1-2, and the top support frame 1-2 is and experiment 2 outer wall of cavity
The arc structure to match, for placing experiment cavity 2；
The material of the experiment cavity 2 is insulating materials, and experiment cavity 2 includes discharge cavity 2-1, the upside of discharge cavity 2-1
Equipped with internal screw thread 2-4, for installing fixed lid 3, internal screw thread 2-4 punishes cloth, and there are two symmetrical threaded hole 2-3, for pacifying
Heating plate 4 is filled, heating plate 4 is made of an electrically conducting material, and there are two microwave mouth 2- with respect to opening in upper side position of discharge cavity 2-1 or so
2, it is respectively used to installation microwave ingress pipe 11 and microwave delivery line 12, it is same in the centre of discharge cavity 2-1 and the two sides of lower position
Shi Kaiyou threaded hole 2-3, is respectively used to the installation of anode plate 13 and piston cap 16；
The anode plate 13 includes plate body 13-1, and the shape of plate body 13-1 is the circle matched with the internal diameter of experiment cavity 2
Shape is uniformly provided with several ventholes 13-2 on plate body 13-1, offers on the side wall of plate body 13-1 for fastening spiral shell
The fixing groove 13-3 that mother is fastened；
The piston cap 16 includes lid 16-1, and the centre of lid 16-1 is hollow structure, and offers thread groove 16-2,
Thread groove 16-2 is matched with the external screw thread on hand piston 14, is offered in the surrounding of lid 16-1 for fastening nut 8
The tapped through hole 16-3 fastened；
The specifically used method of experiment porch the following steps are included:
S1, the two poles of the earth that heating power supply is connected by the wiring gasket at 4 both ends of heating plate, by heating plate 4 to emitter 7 into
Row heating, so that emitter 7 launches electronics；
S2, the anode of electrion power supply is passed through to wiring gasket jointed anode plate 13, cathode passes through cathode connection gasket
Connect heating plate 4, for electronics under the action of discharge voltage, acceleration reaches anode plate 13, and with gas collisions in discharge cavity, generate
Ionization carries out the continuous discharge in experiment cavity 2；
S3, the electromagnetic wave that microwave source generates is introduced into inside plasma by microwave ingress pipe 11, and will be micro-
Waveguide outlet pipe 12 is connected to microwave measuring equipment, and measurement passes through microwave variation characteristic after plasma；
S4, plasma density is adjusted by the amplitude setting for adjusting discharge voltage, increases discharge voltage, strength of discharge
And plasma density increases, and reduces discharge voltage, strength of discharge and plasma density reduce, and measurement passes through after plasma
Microwave variation characteristic；
S5, the collision frequency that electronics and neutral gas are adjusted by the movement of rotating handle 17, measurement measurement pass through
Microwave variation characteristic after gas ions.
The two-stage that wiring gasket by heating board ends connects heating power supply is being heated by heating plate to emitter
During, by wiring gasket jointed anode plate, cathode is added the anode of electrion power supply by the connection of cathode connection gasket
Hot plate, since heating plate is conductive material, cathode voltage is acted on emitter.The emissivities of emitter are with transmitting body temperature
The raising of degree, under the action of discharge voltage, emitter releases a large amount of electronics, and electronics accelerates under the action of discharge voltage
Reach anode, and with gas collisions in discharge cavity, generate ionization,, can be in experimentation to realize intracavitary continuous discharge
Plasma density and electron temperature are measured by Langmuir probe.
In the case where continuous discharge, the electromagnetic wave that microwave source generates is introduced plasma by microwave ingress pipe
Internal portion, and microwave catheter is connected to microwave measuring equipment, measurement passes through microwave variation characteristic after plasma.
During the experiment, it can be set by the amplitude of discharge voltage to adjust plasma density, increase electric discharge electricity
Pressure, strength of discharge and plasma density increase；Reduce discharge voltage, strength of discharge and plasma density reduce.
During the experiment, the position of piston can be reduced by the handle of rotary manual piston counterclockwise, it is total in gas
In the case where mass conservation, increasing volume can reduce the density of neutral gas, to reduce collision frequency.Therefore can pass through
The movement of rotating handle adjusts the collision frequency of electronics and neutral gas, to investigate collision frequency to the shadow of electromagnetic propagation
It rings.
A kind of experiment porch that plasma collision frequency influences electromagnetic propagation of the present invention, experiment porch main body is by testing
Pedestal and experiment cavity are constituted, and gas completes electric discharge inside discharging chamber, and imports and export electromagnetism by microwave catheter
Wave, to investigate influence of the collision frequency to electromagnetic propagation.In the equipment course of work, plasma can be controlled by strength of discharge
Density controls neutral gas density by the variation of neutral gas volume, to adjust collision frequency, and then investigates not syn-collision
The influence that frequency characteristic propagates electromagnetic field.The present invention has the characteristics that delicate structure, manipulation are easy.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and what is described in the above embodiment and the description is only the present invention
Principle, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these variation and
Improvement is both fallen in the range of claimed invention.The present invention claims protection scope by appended claims and its
Equivalent defines.
Claims (8)
1. a kind of experiment porch that plasma collision frequency influences electromagnetic propagation, including experiment pedestal (1) and experiment cavity
(2), which is characterized in that the experiment cavity (2) is cylindrical structure, is equipped with fixed lid (3) on the top of experiment cavity (2),
It is equipped with heating plate (4) in the lower wall of fixed lid (3), emitter (7) is installed, in fixation in the lower wall of heating plate (4)
It covers and offers screw hole at the center of (3) and be bolted in screw hole anode bolt (5), anode bolt (5) connects with fixed lid (3)
Synapsis is equipped with cathode connection gasket (6), and the bottom end of experiment cavity (2) is equipped with piston cap (16), in the inside of experiment cavity (2)
Anode plate (13) are installed, are plugged with Langmuir probe (10) on the right side wall of experiment cavity (2), the left side of cavity (2) is tested
It is connected on side wall microwave ingress pipe (11), tests and be connected with microwave delivery line (12) on the right side wall of cavity (2).
2. the experiment porch that plasma collision frequency according to claim 1 influences electromagnetic propagation, which is characterized in that
It is equipped with hand piston (14) on the piston cap (16), one end of hand piston (14) and the joint place of experiment cavity (2) are set
Have sealing ring (15), stretching experiment cavity (2) other end of hand piston (14) is equipped with handle (17).
3. the experiment porch that plasma collision frequency according to claim 1 influences electromagnetic propagation, which is characterized in that
The contact position surrounding of experiment cavity (2) and heating plate (4) is equipped with fastening nut (8) and wiring gasket (9), tests cavity
(2) it is equipped with fastening nut (8) and wiring gasket (9) with the contact position surrounding of anode plate (13), tests cavity (2) and piston cap
(16) contact position surrounding is equipped with fastening nut (8) and wiring gasket (9), is fastened by fastening nut (8), by connecing
Line gasket (9) carries out wiring.
4. the experiment porch that plasma collision frequency according to claim 1 influences electromagnetic propagation, which is characterized in that
The experiment pedestal (1) is made of pedestal (1-1) and support frame (1-2), and the support frame top (1-2) is and tests cavity (2) outside
The arc structure that wall matches, for placing experiment cavity (2).
5. the experiment porch that plasma collision frequency according to claim 1 influences electromagnetic propagation, which is characterized in that
The material of experiment cavity (2) is insulating materials, and experiment cavity (2) includes discharge cavity (2-1), the upside of discharge cavity (2-1)
Equipped with internal screw thread (2-4), for installing fixed lid (3), internal screw thread (2-4) punishes cloth, and there are two symmetrical threaded hole (2-
3), for installing heating plate (4), heating plate (4) is made of an electrically conducting material, opposite in upper side position of discharge cavity (2-1) or so
It opens there are two microwave mouth (2-2), installation microwave ingress pipe (11) and microwave delivery line (12) is respectively used to, at discharge cavity (2-1)
Centre and lower position two sides simultaneously be provided with threaded hole (2-3), be respectively used to the peace of anode plate (13) and piston cap (16)
Dress.
6. the experiment porch that plasma collision frequency according to claim 1 influences electromagnetic propagation, which is characterized in that
The anode plate (13) includes plate body (13-1), and the shape of plate body (13-1) is the circle matched with the internal diameter of experiment cavity (2)
Shape is uniformly provided with several ventholes (13-2) on plate body (13-1), offers and be used on the side wall of plate body (13-1)
The fixing groove (13-3) that fastening nut is fastened.
7. the experiment porch that plasma collision frequency according to claim 1 influences electromagnetic propagation, which is characterized in that
The piston cap (16) includes lid (16-1), and the centre of lid (16-1) is hollow structure, and offers thread groove (16-2),
Thread groove (16-2) is matched with the external screw thread on hand piston (14), is offered in the surrounding of lid (16-1) for fastening
The tapped through hole (16-3) that nut (8) is fastened.
8. a kind of put down the experiment that electromagnetic propagation influences for plasma collision frequency of any of claims 1-7
The application method of platform, which is characterized in that the application method the following steps are included:
S1, the two poles of the earth that heating power supply is connected by the wiring gasket at heating plate (4) both ends, by heating plate (4) to emitter (7)
It is heated, so that emitter (7) launches electronics；
S2, the anode of electrion power supply is passed through into wiring gasket jointed anode plate (13), cathode is connected by cathode connection gasket
Connect heating plate (4), electronics under the action of discharge voltage, acceleration reach anode plate (13), and with gas collisions in discharge cavity, produce
Raw ionization, carries out the continuous discharge in experiment cavity (2)；
S3, the electromagnetic wave that microwave source generates is introduced into inside plasma by microwave ingress pipe (11), and by microwave
Delivery line (12) is connected to microwave measuring equipment, and measurement passes through microwave variation characteristic after plasma；
S4, plasma density is adjusted by the amplitude setting for adjusting discharge voltage, increases discharge voltage, strength of discharge and waited
Plasma density increases, and reduces discharge voltage, and strength of discharge and plasma density reduce, and measurement passes through microwave after plasma
Variation characteristic；
S5, the collision frequency that electronics and neutral gas are adjusted by the movement of rotating handle (17), measurement measurement by it is equal from
Microwave variation characteristic after daughter.
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| CN201811125648.6A CN109358237B (en) | 2018-09-26 | 2018-09-26 | Experiment platform for influence of plasma collision frequency on electromagnetic propagation and using method |
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| CN201811125648.6A CN109358237B (en) | 2018-09-26 | 2018-09-26 | Experiment platform for influence of plasma collision frequency on electromagnetic propagation and using method |
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| CN109358237A true CN109358237A (en) | 2019-02-19 |
| CN109358237B CN109358237B (en) | 2020-11-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112630288A (en) * | 2020-11-17 | 2021-04-09 | 燕山大学 | Secondary electron emission coefficient measuring device and method based on discharge |
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| US4755764A (en) * | 1981-04-08 | 1988-07-05 | Technion Research & Development Foundation Ltd. | Electromagnetic wave amplifiers and generators |
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