CN205542693U - Ultrafast pulse X ray source system - Google Patents
Ultrafast pulse X ray source system Download PDFInfo
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- CN205542693U CN205542693U CN201521052251.0U CN201521052251U CN205542693U CN 205542693 U CN205542693 U CN 205542693U CN 201521052251 U CN201521052251 U CN 201521052251U CN 205542693 U CN205542693 U CN 205542693U
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- electron
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- optical system
- short pulsed
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 24
- 239000002184 metal Substances 0.000 claims abstract description 24
- 230000005684 electric field Effects 0.000 claims abstract description 16
- 238000010894 electron beam technology Methods 0.000 claims abstract description 10
- 230000001133 acceleration Effects 0.000 claims abstract description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 22
- 229910052737 gold Inorganic materials 0.000 claims description 22
- 239000010931 gold Substances 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 239000007769 metal material Substances 0.000 claims description 4
- 238000001259 photo etching Methods 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 3
- 238000009825 accumulation Methods 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims description 3
- 239000011733 molybdenum Substances 0.000 claims description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 239000010937 tungsten Substances 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 abstract description 6
- 238000004846 x-ray emission Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 210000001367 artery Anatomy 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- X-Ray Techniques (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
The utility model provides an ultrashort pulse X-ray source system, which comprises an electron gun, an electron optical system, a metal anode, a window and a vacuum tube wall; the electron gun is an emission source, the electron optical system is arranged on an emergent light path of the electron gun, and the electron optical system comprises an electron acceleration system, a focusing system and a high-speed scanning system which are arranged in sequence; voltage is applied between the metal anode and the focusing system to form an electric field; the electron gun, the electron optical system and the metal anode are all arranged in the wall of the vacuum tube, and the window is arranged on one side wall of the vacuum tube. The utility model is a stable and reliable X-ray pulse source system with time resolution reaching picosecond magnitude, which bombards metal filaments by high-speed scanning electron beams in a vacuum environment to generate an ultrashort pulse X-ray device; the metal filament is bombarded by the electron beam scanned at a high speed, and the extremely fast picosecond-magnitude X-ray pulse emission can be realized.
Description
Technical field
This utility model relates to a kind of ultra-short pulsed X-ray origin system；This system passes through vacuum environment high speed
Scanning beam, bombards filament, produces ultra-short pulsed X-ray device.
Background technology
Traditional x-ray source, by modulation grid voltage, pulse is difficult to microsecond level.Cannot meet and receive
The ultrafast detection of second even psec needs.
Developed country has relatively early carried out current ultrashort ps Pulsed Xray source, uses femtosecond laser bombardment vacuum bar
Metal tip under part realizes the ultrafast X-ray impulse ejection of picosecond magnitude.The method is the most ripe,
A lot of research institutions uses the method acquisition ultrafast X-ray source to carry out the research of ultrafast phenomena.Due to necessary
High-peak power femtosecond laser light source is as light source, with high costs, and stability and reliability are the highest, it is difficult to shape
One-tenth can market application ultrashort pulse X source.
Utility model content
In order to solve the technical problem in the presence of background technology, this utility model provides a kind of reliable and stable
Time resolution reaches the X-ray pulse origin system of picosecond magnitude, by vacuum environment high speed scanning beam,
Bombardment filament, produces ultra-short pulsed X-ray device；The beam bombardment metal using high-velocity scanning is thin
Silk, it is possible to achieve the X-ray pulse of the picosecond magnitude that is exceedingly fast is launched.
Technical solution of the present utility model is: ultra-short pulsed X-ray origin system, it is characterised in that: bag
Include electron gun, electron-optical system, metal anode, window and vacuum tube wall；Described electron gun is to launch
Source, electron-optical system is located on the emitting light path of electron gun, and electron-optical system includes the electricity set gradually
Son adds speed system, focusing system, high-velocity scanning system；Making alive between described metal anode and focusing system
Form electric field；Described electron gun, electron-optical system, metal anode are each provided in vacuum tube wall, and window sets
On a sidewall of vacuum tube wall.
Above-mentioned electron-optical system includes that battery lead plate and deflecting electrode plate are accelerated in the focusing set gradually.
Add high-velocity scanning electric field at deflecting electrode and realize the high-velocity scanning to electron beam, compression of electronic bombardment metal
The time of anode, it is achieved ultra-short pulsed X-ray is launched.
Above-mentioned metal anode be spun gold or use obtain in the method through film gold-plated on the substrate of X-ray photoetching
?；Described tinsel be micron to grade filament, material is gold, molybdenum, tungsten, copper.
Above-mentioned spun gold ground connection, prevents electric charge accumulation in work.
It is poroid battery lead plate or barreled electrode that battery lead plate is accelerated in above-mentioned focusing.
Vacuum tube wall uses metal material, shields and absorbs unnecessary X-ray, prevents leakage.
Above-mentioned window material is radiotransparen material.
The beneficial effects of the utility model are embodied in the following aspects:
1) this utility model vacuum environment high speed scanning beam, during inswept filament, produces ultrashort arteries and veins
Rush X-ray；
2) this utility model uses high-velocity scanning electric field to realize the high-velocity scanning to electron beam, and compression of electronic bombards
The time of metal anode, the ultra-short pulsed X-ray that can reach picosecond magnitude is launched；
3) this utility model uses superfine metal anode, such as gold anode, greatly reduces electron bombardment sun
The time of pole；
4) this utility model metal anode can use through film gold-plated on the substrate of X-ray, and photoetching
Method obtains；
5) this utility model can produce continuous X-rays pulse, and dutycycle is controlled；In continuous impulse work
When making, can use wire netting or photolithographic figure, scanned electron bombardment produces high speed ultrashort X arteries and veins
Rush sequence；
6) system can regulate, by regulation scanning speed, the pulse width launching X-ray；
7) system can have electron focusing system, use electric field or field form to focus on electron beam, favorably
In shortening X-ray pulse time width；
8) repetition rate of X-ray is launched in the scan period regulation by regulation scanning voltage；
9) can by regulation electron gun and accelerate electrode electric field intensity, regulation launch X-ray energy and
Intensity.
10) this utility model has reliability height, low cost and other advantages.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model system；
Fig. 2 is the electron-optical system schematic diagram of this utility model system；
Wherein: 1 electron gun；2 focus on acceleration battery lead plate；3 deflecting electrode plates；4 spun golds；5—
Window；6 vacuum tube walls；
Detailed description of the invention
Seeing Fig. 1, Fig. 2, the test device that this utility model provides includes: high-velocity scanning electron-optical system,
Ultra-short pulsed X-ray emission system；
Its principle is mainly: in vacuum environment, and electron gun 1 divergent bundle is carried out through electron-optical system
Accelerating and focus on, and carrying out high-velocity scanning under high-velocity scanning voltage between the double plate electrode of entrance, anode is micron
The filament of magnitude width, the optional gold of material etc. has the material of good X-ray emission ability, electron beam
Bombardment produces X-ray pulse to gold anode, and the time of electron bombardment to gold anode is by scanning speed control, logical
Often it is directly proportional to the width of anode and the speed scanned is inversely proportional to.So sweeping by reducing anode width and raising
Retouching speed makes the time of electron bombardment gold anode can reach the height of psec in picosecond magnitude, the X-ray of generation
Rapid pulse rushes, and exports through optical window.X-ray source can be applied to various environment.
Below in conjunction with the accompanying drawings and this utility model is further described by preferred embodiment.
When electron gun 1 launches electronics as anode, control the speed of electron emission by controlling anode voltage,
By preferred electron rifle, adjust the electron density of electron emission.
Electronics accelerates to fly to anode under accelerating potential, and period focuses on through electron-optical, by beam spot pressure
Contracting, controls in micron dimension, can improve the energy density of electron bombardment anode, reduce bombardment anode time
Between.Centre arranges double plate electrode, and the electron beam of process is carried out high-velocity scanning.Can bang with modulated scanning electronics
Hit the time width of anode filament, during electron bombardment metal, make metal material inner electron depart from atom and formed
Room, outer-shell electron transits to internal layer room, releases X-ray, forms ultrashort pulse X and launches.
Current scanline circuit can be the high-velocity scanning of nanosecond below performance period, the stroke of scanning in cm range magnitude,
The processing diameter of spun gold can reach less than 20 microns.For example with swash width 20 millimeters, spun gold diameter
20 microns, scanning nanosecond one-way time 1, so focusing electronics and the action time of spun gold:
20um/20mm × 1ns=1ns/1000=1ps
So pulse width of the X-ray that electronics short time bombardment spun gold produces can control in ps level.By
The shortest in the time that electron bombardment gold copper-base alloy interacts, pulse broadening effect is the shortest, can ignore.Enter one
Step improves scanning speed can be greatly improved impulse speed.
Seeing Fig. 1, the device that this utility model is preferable to carry out includes electron gun 1, focuses on and accelerates battery lead plate 2,
Deflecting electrode plate 3, spun gold 4, window 5, vacuum tube wall 6.
Electron gun 1 is as electron emission source.The electron gun of thermionic emission, or photocathode can be used.
In order to produce stable electron source.
Electron-optical system includes that electronics adds speed system, focusing system, high-velocity scanning system.Scanning speed can
Reach nanosecond below level, focus on beam spot to micron level；In order to accelerate and to focus on electronics, simultaneously to electricity
Sub-Shu Jinhang scanning at a high speed；
Adding speed system is i.e. to accelerate electrode formation electric field to be accelerated electronics, improves electron energy raising X and penetrates
The generation probability of line；
Focusing system uses pressure electrode or claims magnetic field to form electric field or magnetic field lens, is focused electronics,
Compression of electronic and the action time of spun gold.
High-velocity scanning system, is lateral electric fields electrode high speed changing electric field intensity, it is achieved the deflection to electron beam
The High Speed Modulation of angle, it is achieved electron beam interacted with the short time of spun gold.
Adding speed system, focusing system, high-velocity scanning system uses to focus on accelerates battery lead plate 2 and deflecting electrode plate 3；
Metal anode uses spun gold 4, and between metal anode and focusing electrode, making alive forms electric field, it is ensured that electronics
To the motion of anode.
Metal anode filament, for example with the material that the X-ray emission rates such as gold, molybdenum, tungsten, copper are higher, tool
There is good ductility, can be drawn into micron-sized filament, or through film gold-plated on the substrate of X-ray,
And the method for photoetching obtains；X-ray emission ability is preferable simultaneously；When continuous impulse works, can use
Wire netting or photolithographic figure, scanned electron bombardment produces high speed ultrashort X pulse train；
Whole device is vacuum system, and all parts is each provided in vacuum tube wall 6, the generation of electronics, scanning,
Bombardment produces X-ray, and process is carried out in a vacuum, and the X-ray of generation is sent out from vacuum system through optical window
Shoot out, enter applied environment.
Time actually used, electron gun 1 uses independently-powered module, poroid battery lead plate can form lenticular
Electric field electronics is focused, it would however also be possible to employ the electrode such as barreled forms magnetic field and electronics carries out magnetic focusing,
Compression focal spot size；Added electric field between electron gun 1 and poroid electrode, is accelerated electronics, improves electricity
The energy of son, can improve the generation efficiency of X-ray.
Double plate electrodes of scanning optimize design as required, add high speed scanning voltage between double plate electrodes, by
Scanning voltage module provides the signal of telecommunication.Filament needs ground connection, prevents electric charge accumulation in work.
Tube wall uses metal material such as rustless steel etc., can shield and absorb unnecessary X-ray；Prevent leakage；
Window 5 material is the radiotransparen materials such as quartz.
System can regulate, by regulation scanning speed, the pulse width launching X-ray；
By regulating electron gun and can accelerate the electric field intensity of electrode, regulation launches the energy of X-ray with strong
Degree.
Claims (8)
1. ultra-short pulsed X-ray origin system, it is characterised in that: include electron gun, electron-optical system, metal anode, window and vacuum tube wall；Described electron gun is emission source, and electron-optical system is located on the emitting light path of electron gun, and electron-optical system includes that the electronics set gradually adds speed system, focusing system, high-velocity scanning system；Between described metal anode and focusing system, making alive forms electric field；Described electron gun, electron-optical system, metal anode are each provided in vacuum tube wall, and window is located on a sidewall of vacuum tube wall.
Ultra-short pulsed X-ray origin system the most according to claim 1, it is characterised in that: described electron-optical system includes that battery lead plate and deflecting electrode plate are accelerated in the focusing set gradually.
Ultra-short pulsed X-ray origin system the most according to claim 2, it is characterised in that: add high-velocity scanning electric field at deflecting electrode and realize the high-velocity scanning to electron beam, the time of compression of electronic bombardment metal anode, it is achieved ultra-short pulsed X-ray is launched.
Ultra-short pulsed X-ray origin system the most according to claim 3, it is characterised in that: described metal anode is spun gold or uses in the method acquisition through film gold-plated on the substrate of X-ray photoetching；Described spun gold be micron to grade filament, material is gold or molybdenum or tungsten or copper.
Ultra-short pulsed X-ray origin system the most according to claim 4, it is characterised in that: described spun gold ground connection, prevent electric charge accumulation in work.
Ultra-short pulsed X-ray origin system the most according to claim 5, it is characterised in that: the described acceleration battery lead plate that focuses on is poroid battery lead plate or drum electrode.
Ultra-short pulsed X-ray origin system the most according to claim 6, it is characterised in that: vacuum tube wall uses metal material, shields and absorbs unnecessary X-ray, prevents leakage.
Ultra-short pulsed X-ray origin system the most according to claim 7, it is characterised in that: described window material is radiotransparen material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521052251.0U CN205542693U (en) | 2015-12-16 | 2015-12-16 | Ultrafast pulse X ray source system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521052251.0U CN205542693U (en) | 2015-12-16 | 2015-12-16 | Ultrafast pulse X ray source system |
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| Publication Number | Publication Date |
|---|---|
| CN205542693U true CN205542693U (en) | 2016-08-31 |
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| CN201521052251.0U Active CN205542693U (en) | 2015-12-16 | 2015-12-16 | Ultrafast pulse X ray source system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105448629A (en) * | 2015-12-16 | 2016-03-30 | 中国科学院西安光学精密机械研究所 | Ultrafast pulse X ray source system |
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2015
- 2015-12-16 CN CN201521052251.0U patent/CN205542693U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105448629A (en) * | 2015-12-16 | 2016-03-30 | 中国科学院西安光学精密机械研究所 | Ultrafast pulse X ray source system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |