CN108598846A - A kind of system generating Cerenkov radiation - Google Patents
A kind of system generating Cerenkov radiation Download PDFInfo
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- CN108598846A CN108598846A CN201810367574.0A CN201810367574A CN108598846A CN 108598846 A CN108598846 A CN 108598846A CN 201810367574 A CN201810367574 A CN 201810367574A CN 108598846 A CN108598846 A CN 108598846A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S1/00—Masers, i.e. devices using stimulated emission of electromagnetic radiation in the microwave range
- H01S1/02—Masers, i.e. devices using stimulated emission of electromagnetic radiation in the microwave range solid
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Abstract
The invention discloses it is a kind of generate Cerenkov radiation system, the system comprises：It is noted with the laminar electronics with the sheet metal of the through-hole array of the sub-wavelength of the first preset direction periodic arrangement and for excitation radiation；Wherein, the laminar electronics note notes the angle between the direction of motion and first preset direction, to generate the Cerenkov radiation in a vacuum in the top parallel motion of the through-hole array by the change laminar electronics.The system can realize that Cherenkov is radiated in a vacuum, and can control the direction of Cherenkov radiation.
Description
Technical field
The present invention relates to electromagnetism technical field, and more specifically more particularly to a kind of Cerenkov radiation that generates is
System.
Background technology
A kind of electromagnetic radiation generated in the case where the movement velocity of charged particle is more than the light velocity in surrounding medium is existing
As referred to as Cherenkov (Cherenkov) radiation.Cherenkov radiation high-energy physics, cosmic ray physically and electrically
There is consequence in the fields such as magnetic radiation source, just become the hot research problem in the whole world from self-discovery day.
According to Narrow Relativity Principle it is found that the speed of any charged particle is impossible to be more than the light velocity in vacuum, because
This, traditional Cherenkov radiation can only generate in the medium, that is to say, that Cherenkov spokes can not possibly be generated in vacuum
It penetrates.Traditional Cherenkov radiation usually requires the band point particle of high-energy (i.e. high speed), this just need to use it is of high cost and
Bulky particle accelerator.Wherein, no threshold value Cherenkov radiation refers to the Cherenkov radiation of not energy threshold,
The charged particle of i.e. any energy can encourage Cherenkov to radiate.No threshold value Cherenkov radiation can utilize low energy
Charged particle, thus can reduce cost with high degree, the light source and particle that can be integrated simultaneously for development of small-scaleization
Diagnostic techniques is of great significance.
It is existing to be used to generate the method without threshold value Cherenkov radiation, artificial Meta Materials are usually relied on, that is, utilize electrification
Particle generates in artificial Meta Materials to be radiated without threshold value Cherenkov.But artificial Meta Materials have dispersion characteristics, lead to nothing
Threshold value Cherenkov radiation can only be realized in specific frequency range.
Invention content
To solve the above problems, the present invention provides a kind of system generating Cerenkov radiation, it can be real in a vacuum
Existing Cherenkov radiation.
To achieve the above object, the present invention provides the following technical solutions：
A kind of system generating Cerenkov radiation, the system comprises：With with the first preset direction periodic arrangement
Sub-wavelength through-hole array sheet metal and for excitation radiation laminar electronics note；
Wherein, the laminar electronics note passes through the change flake in the top parallel motion of the through-hole array
Electronics notes the angle between the direction of motion and first preset direction, to generate the Cerenkov radiation in a vacuum.
Preferably, in above system, the through-hole is cuboid through-hole.
Preferably, in above system, the length of the cuboid through-hole：The width of the cuboid through-hole is 10：1.
Preferably, in above system, the length of the cuboid through-hole：A height of the 1 of the cuboid through-hole:1.
Preferably, in above system, the height of the cuboid through-hole：The thickness of the sheet metal is 1:1.
Preferably, in above system, the width of the cuboid through-hole is less than the electromagnetism that the cuboid through-hole gives off
The wavelength of wave.
Preferably, in above system, the flake electronics note passes through in the top parallel motion of the through-hole array
Change the angle between the laminar electronics note direction of motion and first preset direction, to generate described cut in a vacuum
Lun Kefu is radiated：
The flake electronics notes the top parallel motion in the through-hole array, and the through-hole array encourages electrification successively
Magnetic resonance pattern；
The EMR electromagnetic resonance pattern is propagated with phase velocity along first preset direction as radiation source, wherein the phase
Speed is expressed asveIndicate that the movement velocity of free electron in the laminar electronics note, α indicate the flake
Electronics notes the angle between the direction of motion and first preset direction；
When the angle α between the laminar electronics note direction of motion and first preset direction is increasing, institute
Phase velocity is stated by the movement velocity of the increasing free electron in the laminar electronics note, until more than the light in vacuum
Speed；When the phase velocity is more than the light velocity in vacuum, the system generates the Cerenkov radiation in a vacuum；When described
When laminar electronics notes the angle α between the direction of motion and first preset direction close to 90 degree, the phase velocity will approach
Infinity, and more than the light velocity in vacuum, the system generates the Cerenkov radiation of no threshold value in a vacuum.
By foregoing description it is found that it is provided by the invention it is a kind of generate Cerenkov radiation system, the system comprises：
With with the sheet metal of the through-hole array of the sub-wavelength of the first preset direction periodic arrangement and for the thin slice of excitation radiation
Shape electronics is noted；Wherein, the laminar electronics note passes through the change flake in the top parallel motion of the through-hole array
Electronics notes the angle between the direction of motion and first preset direction, to generate the Cerenkov radiation in a vacuum.
The system can realize that Cherenkov is radiated in a vacuum, and can control the direction of Cherenkov radiation.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of structural schematic diagram of system generating Cerenkov radiation provided in an embodiment of the present invention；
Fig. 2 is a kind of vertical view of cuboid through-hole array provided in an embodiment of the present invention；
Fig. 3 is the transmitted spectrum schematic diagram that a kind of emulation provided in an embodiment of the present invention obtains；
Fig. 4 is the distribution schematic diagram of the field of emulation three obtained frequency in a kind of Fig. 3 provided in an embodiment of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below in conjunction with the accompanying drawings and specific real
Applying mode, the present invention is described in further detail.
With reference to figure 1, Fig. 1 is a kind of structural representation of system generating Cerenkov radiation provided in an embodiment of the present invention
Figure.
The system for generating Cerenkov radiation, including：With with the sub-wavelength of the first preset direction periodic arrangement
Through-hole array 12 sheet metal 11 and laminar electronics note 13 for excitation radiation.
Wherein, the laminar electronics note 13 the through-hole array 12 top parallel motion, it is described thin by changing
Angle between 13 direction of motion of chip type electronic note and first preset direction, to generate Cherenkov's spoke in a vacuum
It penetrates.
Optionally, the through-hole includes but is not limited to cuboid through-hole.
Optionally, the length of the cuboid through-hole：The width of the cuboid through-hole is 10：1.
Specifically, the cuboid through-hole be have high length to width aspect than cuboid through-hole.
Optionally, the length of the cuboid through-hole：A height of the 1 of the cuboid through-hole:1.
Optionally, the height of the cuboid through-hole：The thickness of the sheet metal is 1:1.
Specifically, the height of the cuboid through-hole is identical with the thickness of the sheet metal.
Optionally, the width of the cuboid through-hole is far smaller than the wavelength for the electromagnetic wave that the cuboid through-hole gives off.
Specifically, 1/10th waves of the wide electromagnetic wave given off less than the cuboid through-hole of the cuboid through-hole
It is long.
Based on the system of above-mentioned generation Cerenkov radiation, concrete principle is as follows：
As shown in Figure 2, wherein the directions z indicate that the laminar electronics notes the direction of motion, the default side of z ' expressions described first
Indicate the direction for the length for being parallel to the cuboid through-hole to, y, α indicates the laminar electronics note direction of motion and described the
Angle between one preset direction.
The flake electronics notes the top parallel motion in the through-hole array, and the through-hole array encourages electrification successively
Magnetic resonance pattern.
The EMR electromagnetic resonance pattern is propagated with phase velocity along first preset direction as radiation source, wherein the phase
Speed is expressed asveIndicate that the movement velocity of free electron in the laminar electronics note, α indicate the flake
Electronics notes the angle between the direction of motion and first preset direction.
When the angle α between the laminar electronics note direction of motion and first preset direction is increasing, institute
Phase velocity is stated by the movement velocity of the increasing free electron in the laminar electronics note, until more than the light in vacuum
Speed；When the phase velocity is more than the light velocity in vacuum, the system generates the Cerenkov radiation in a vacuum；When described
When laminar electronics notes the angle α between the direction of motion and first preset direction close to 90 degree, the phase velocity will approach
Infinity, and more than the light velocity in vacuum, the system generates the Cerenkov radiation of no threshold value in a vacuum.
In addition, the radiation direction of Cherenkov radiation in a vacuum caused by above-mentioned meets following radiation angle formula：
Wherein, θ indicates that the angle between Cherenkov radiation directions and first preset direction, c indicate in vacuum
The light velocity.
It follows that by changing the angle between the laminar electronics note direction of motion and first preset direction
α, thus it is possible to vary the radiation direction of Cherenkov radiation changes the size of θ.
When the thickness of the sheet metal 11 is 0.5mm, a length of 0.5mm of the cuboid through-hole, the cuboid lead to
The width in hole is 0.05mm, a height of 0.5mm of the cuboid through-hole, two neighboring cuboid through-hole on the first preset direction
Distance is 0.5mm, and when α is 85 degree and electron energy is 5 kilo electron volt, with reference to figure 3, Fig. 3 is provided in an embodiment of the present invention
It is a kind of to emulate obtained transmitted spectrum schematic diagram, wherein abscissa Frequency indicates frequency, ordinate Field
Intensity indicates electric field strength, as shown in Figure 3, it is seen that it is main there are three stronger radiation frequency, be respectively 0.3THz,
0.38THz and 0.56THz, in conjunction with shown in Fig. 4, Fig. 4 is the distribution schematic diagram of the field of emulation three obtained frequency in Fig. 3, can
To find out, the field of these three radiation frequencies is radiated in vacuum, and radiation direction is 59 degree, meets the spoke of Cherenkov radiation
Firing angle formula.
By foregoing description it is found that it is provided by the invention it is a kind of generate Cerenkov radiation system, the system comprises：
With with the sheet metal of the through-hole array of the sub-wavelength of the first preset direction periodic arrangement and for the thin slice of excitation radiation
Shape electronics is noted；Wherein, the laminar electronics note passes through the change flake in the top parallel motion of the through-hole array
Electronics notes the angle between the direction of motion and first preset direction, to generate the Cerenkov radiation in a vacuum.
The system can generate Cherenkov radiation in a vacuum, and can control the direction of Cherenkov radiation.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.
Claims (7)
1. a kind of system generating Cerenkov radiation, which is characterized in that the system comprises：With with the first preset direction week
Phase property arrangement sub-wavelength through-hole array sheet metal and for excitation radiation laminar electronics note；
Wherein, the laminar electronics note passes through the change laminar electronics in the top parallel motion of the through-hole array
The angle between the direction of motion and first preset direction is noted, to generate the Cerenkov radiation in a vacuum.
2. system according to claim 1, which is characterized in that the through-hole is cuboid through-hole.
3. system according to claim 2, which is characterized in that the length of the cuboid through-hole：The cuboid through-hole
Width is 10：1.
4. system according to claim 2, which is characterized in that the length of the cuboid through-hole：The cuboid through-hole
A height of 1:1.
5. system according to claim 2, which is characterized in that the height of the cuboid through-hole：The thickness of the sheet metal
Degree is 1:1.
6. system according to claim 2, which is characterized in that the width of the cuboid through-hole is less than the cuboid through-hole
/ 10th wavelength of the electromagnetic wave given off.
7. system according to claim 1, which is characterized in that the flake electronics note is in the top of the through-hole array
Parallel motion, by changing the angle between the laminar electronics note direction of motion and first preset direction, with true
Generating the Cerenkov radiation in the air includes：
The flake electronics notes the top parallel motion in the through-hole array, and the through-hole array has encouraged electromagnetism humorous successively
It shakes pattern；
The EMR electromagnetic resonance pattern is propagated with phase velocity along first preset direction as radiation source, wherein the phase velocity
It is expressed asveIndicate that the movement velocity of free electron in the laminar electronics note, α indicate the laminar electronics
Note the angle between the direction of motion and first preset direction；
When the angle α between the laminar electronics note direction of motion and first preset direction is increasing, the phase
Speed is by the movement velocity of the increasing free electron in the laminar electronics note, until more than the light velocity in vacuum；When
When the phase velocity is more than the light velocity in vacuum, the system generates the Cerenkov radiation in a vacuum；When the thin slice
When shape electronics notes the angle α between the direction of motion and first preset direction close to 90 degree, the phase velocity will be close to infinite
Greatly, and more than the light velocity in vacuum, the system generates the Cerenkov radiation of no threshold value in a vacuum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810367574.0A CN108598846B (en) | 2018-04-23 | 2018-04-23 | System for generating Cerenkov radiation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810367574.0A CN108598846B (en) | 2018-04-23 | 2018-04-23 | System for generating Cerenkov radiation |
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| CN108598846B CN108598846B (en) | 2020-05-05 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102593692A (en) * | 2011-12-21 | 2012-07-18 | 电子科技大学 | Cerenkov radiation source of surface plasma waves |
| CN102623873A (en) * | 2012-04-13 | 2012-08-01 | 电子科技大学 | Implement method for producing high power radiation based on double negative materials |
| JP2017054699A (en) * | 2015-09-09 | 2017-03-16 | 学校法人早稲田大学 | Electromagnetic wave generation device and method therefor |
| CN106770619A (en) * | 2016-12-28 | 2017-05-31 | 电子科技大学 | A kind of surface plasma excimer produces the device of Cerenkov radiation |
-
2018
- 2018-04-23 CN CN201810367574.0A patent/CN108598846B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102593692A (en) * | 2011-12-21 | 2012-07-18 | 电子科技大学 | Cerenkov radiation source of surface plasma waves |
| CN102623873A (en) * | 2012-04-13 | 2012-08-01 | 电子科技大学 | Implement method for producing high power radiation based on double negative materials |
| JP2017054699A (en) * | 2015-09-09 | 2017-03-16 | 学校法人早稲田大学 | Electromagnetic wave generation device and method therefor |
| CN106770619A (en) * | 2016-12-28 | 2017-05-31 | 电子科技大学 | A kind of surface plasma excimer produces the device of Cerenkov radiation |
Non-Patent Citations (2)
| Title |
|---|
| PING ZHANG ET AL.: ""Diffraction radiation of a sub-wavelength hole array with dielectric medium loading"", 《J. PHYS. D: APPL. PHYS.》 * |
| SHENGGANG LIU ET AL.: ""Surface Polariton Cherenkov Light Radiation Source"", 《PHYSICS REVIEW LETTERS》 * |
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| CN108598846B (en) | 2020-05-05 |
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