CN109192642A - A kind of pulsar X-ray simulation source radiating coherence - Google Patents
A kind of pulsar X-ray simulation source radiating coherence Download PDFInfo
- Publication number
- CN109192642A CN109192642A CN201811003062.2A CN201811003062A CN109192642A CN 109192642 A CN109192642 A CN 109192642A CN 201811003062 A CN201811003062 A CN 201811003062A CN 109192642 A CN109192642 A CN 109192642A
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- Prior art keywords
- pulsar
- cathode
- ray
- simulation source
- electronics
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J35/00—X-ray tubes
- H01J35/02—Details
- H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
- H01J35/045—Electrodes for controlling the current of the cathode ray, e.g. control grids
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J35/00—X-ray tubes
- H01J35/02—Details
- H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
- H01J35/06—Cathodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J35/00—X-ray tubes
- H01J35/02—Details
- H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
- H01J35/08—Anodes; Anti cathodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J35/00—X-ray tubes
- H01J35/24—Tubes wherein the point of impact of the cathode ray on the anode or anticathode is movable relative to the surface thereof
- H01J35/30—Tubes wherein the point of impact of the cathode ray on the anode or anticathode is movable relative to the surface thereof by deflection of the cathode ray
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- X-Ray Techniques (AREA)
Abstract
The invention discloses a kind of pulsar X-ray simulation source for radiating coherence, the simulation source successively includes: cathode (1), primary focusing electrode (2), anode (3), period control electrode (4), prime focus pole (5) and target (6) from top to bottom；It is intracavitary that the cathode (1) is located at primary focusing electrode (2), the cathode (1) is used for launching electronics, the primary focusing electrode (2) is used to carry out electronics acceleration focusing, applies negative high voltage on the cathode (1) and primary focusing electrode (2)；The anode (3) is used to accelerate electronics further progress；The period control electrode (4) deflects electronics for applying different magnetic field；The prime focus pole (5) is for being focused the electronics after acceleration；X-ray is generated on electron impact to target (6) after focusing.Simulation source of the invention can generate the radiant-energy spectrum with high degree of conformity and the X-ray of pulse period, and x-ray focal spot is in micron even sub-micron rank.
Description
Technical field
The present invention relates to pulsar navigation field, in particular to pulsar navigation ground simulation source or high-precision celestial body is surveyed
Measure ground validation field, and in particular to a kind of pulsar X-ray simulation source for radiating coherence.
Background technique
Pulsar navigation is a kind of novel airmanship independent of terrestrial techniques support system, carries out pulse on ground
Need to simulate the radiation characteristic and cyclophysis of X-ray pulsar when star navigation verification test, it is therefore desirable to which exploitation is capable of providing
The simulation source of different pulsar radiation features, while the angular position measurement method of pulsar x-ray photon intensity correlation is in addition to wanting
Modulus is intended except the radiation feature of pulsar, also requires the x-ray photon of simulation source radiation to have coherence, so this simulation
Source also requires the X-ray of simulation source other than requiring the radiant-energy spectrum of high degree of conformity and the analog functuion of pulse period
Focal spot is also not have the pulsar X-ray simulation source for meeting above-mentioned requirements in micron even sub-micron rank at present.
Summary of the invention
The pulsed X-ray output for realizing high frequency stabilization, and the coke of X-ray can be facilitated the purpose of the present invention is to provide one kind
For spot size in sub-micron rank, the period of X-ray pulse and radiation intensity are easy to adjust.
To achieve the goals above, the present invention provides a kind of pulsar X-ray simulation source for radiating coherence, the moulds
Quasi- source successively includes: cathode 1, primary focusing electrode 2, anode 3, period control electrode 4, prime focus pole 5 and target 6 from top to bottom；It is described
Cathode 1 is intracavitary positioned at primary focusing electrode 2, and the cathode 1 is used for launching electronics, and the primary focusing electrode 2 is used for electronics progress
Accelerate to focus, applies negative high voltage on the cathode 1 and primary focusing electrode 2；The anode 3 is for adding electronics further progress
Speed；The period control electrode 4 deflects electronics for applying different magnetic field；After the prime focus pole 5 is used for acceleration
Electronics be focused；X-ray is generated on electron impact to target 6 after focusing.
As a kind of improvement of above-mentioned apparatus, the cathode 1 is hot cathode silk or cold cathode.
As a kind of improvement of above-mentioned apparatus, the cathode 1 uses V-structure or needle-shaped emitter structure.
As a kind of improvement of above-mentioned apparatus, the primary focusing electrode 2 uses column construction, along cylindrical axis direction
Making circular hole.
As a kind of improvement of above-mentioned apparatus, the pressure difference model of the voltage on voltage and cathode 1 on the primary focusing electrode 2
It encloses for 0-500V.
As a kind of improvement of above-mentioned apparatus, the anode 3 is the annular electrode of center aperture, and the anode 3 is grounded.
As a kind of improvement of above-mentioned apparatus, the period control electrode 4 uses dipole field.
As a kind of improvement of above-mentioned apparatus, the prime focus pole 5 is using the solenoid wrapped up by soft iron shell, in solenoid
Pole shoe is set at the position of near target.
As a kind of improvement of above-mentioned apparatus, the material of the target 6 is metal.
As a kind of improvement of above-mentioned apparatus, the material of the target 6 is tungsten.
The present invention has the advantages that
1, the pulsar X-ray simulation source of sub-micron focal spot of the invention meets the side of negative high voltage using plus earth cathode
Formula, compared to the pulsar X-ray simulation source that anode connects positive high voltage, safety is more preferable；
2, simulation source of the present invention is easy to implement sub-micron using the two-stage type of focusing of primary focusing electrode and prime focus pole
X-ray focal spot；
3, pulsar X-ray simulation source of the invention is come real by adjusting the magnetic field strength and magnetic direction of period control electrode
Existing X-ray pulse period, period coordination electrode use solenoid, by change solenoid coil current direction and current strength come
Change the magnetic direction and intensity on electron path, to reach the deflection to electronics；When the period, control electrode did not formed magnetic field,
It focuses electronics and bombards target in the axial direction, so that X-ray is generated, when focusing electronics off-axis direction, and target cannot be bombarded
It is just generated without X-ray, realizes the period tune to X-ray pulse by changing the on-off of period control electrode formation field supply
System, this method is simple and easy, can simulate the X-ray pulsar of any period.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the pulsar X-ray simulation source of radiation coherence of the invention.
Appended drawing reference:
1, cathode 2, primary focusing electrode 3, anode
4, period control electrode 5, prime focus pole 6, target
Specific embodiment
Now in conjunction with attached drawing, the invention will be further described.
With reference to Fig. 1, the present invention provides a kind of pulsar X-ray simulation sources for radiating coherence, comprising: cathode 1, primary
Focusing electrode 2, anode 3, period control electrode 4, prime focus pole 5 and target 6；Wherein, the cathode 1 is intracavitary positioned at primary focusing electrode 2, yin
1 launching electronics of pole, electronics accelerate to focus through primary focusing electrode 2, and primary focusing electrode 2 opens circular hole on central axis, are convenient for electronics
It draws, anode 3 further speeds up electronics.Period control electrode 4 uses dipole field, by applying different magnetic field, to electronics into
Horizontal deflection；Electronics after 4 pairs of prime focus pole accelerates is focused；After focusing on electron impact to target 6, X-ray is generated.
The component of the pulsar X-ray simulation source of the sub-micron focal spot is described further below.
The cathode 1 uses hot cathode silk or cold cathode.Structure uses V-structure or needle-shaped emitter structure.Yin
Add negative high voltage on pole 1, for making electronics fly downwards.
At the annular of intermediate aperture, the electron beam that the cathode filament 1 emits can pass through primary poly- the primary focusing electrode 2
The aperture at burnt 2 middle part of grade is leaped to anode 3.The primary focusing electrode 2 plus negative high voltage, voltage have 0-500V model relative to cathode 1
Interior pressure difference is enclosed, near primary focusing electrode 2 is open, voltage equipotential surface is bent strongly, so that the electricity of 1 different zones of cathode transmitting
Son is converged to a bit at primary 2 rear of concentration stage, can control the shape and emissive porwer of electron beam by adjusting pressure difference.
The period control electrode 4 uses dipole field, applies different magnetic field by changing coil current, carries out to electronics inclined
Turn.When the coil no power of period control electrode 4, electron beam can be normal through final beat to target 6 forms X-ray, works as coil
When energization, electron beam is deflected by magnetic field force, and electron beam cannot be got on target 6.
Using the solenoid of peripheral hardware soft iron shell, soft iron shell has pole shoe by the position of near target for the prime focus pole 5, pole shoe it
Between have the high-intensity magnetic field of rotational symmetry, can play the role of assembling electron beam.
6 material of target is tungsten or other metal materials.
The pulsar X-ray simulation source of sub-micron focal spot of the invention can not only analog pulse star X-ray radiation feature,
And the pulsar periodic characteristic of high degree of conformity, while x-ray focal spot of the sub-micron less than 1 micron may be implemented, radiate relevant X
Ray photons, the angular position measurement ground experiment technical identification for pulsar x-ray photon intensity correlation.
It should be noted last that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting.Although ginseng
It is described the invention in detail according to embodiment, those skilled in the art should understand that, to technical side of the invention
Case is modified or replaced equivalently, and without departure from the spirit and scope of technical solution of the present invention, should all be covered in the present invention
Scope of the claims in.
Claims (10)
1. a kind of pulsar X-ray simulation source for radiating coherence, which is characterized in that the simulation source is successively wrapped from top to bottom
It includes: cathode (1), primary focusing electrode (2), anode (3), period control electrode (4), prime focus pole (5) and target (6)；The cathode (1)
Intracavitary positioned at primary focusing electrode (2), the cathode (1) is used for launching electronics, and the primary focusing electrode (2) is used to carry out electronics
Accelerate to focus, applies negative high voltage on the cathode (1) and primary focusing electrode (2)；The anode (3) be used for electronics further into
Row accelerates；The period control electrode (4) deflects electronics for applying different magnetic field；The prime focus pole (5) is used for
Electronics after acceleration is focused；X-ray is generated on electron impact to target (6) after focusing.
2. the pulsar X-ray simulation source of radiation coherence according to claim 1, which is characterized in that the cathode (1)
For hot cathode silk or cold cathode.
3. the pulsar X-ray simulation source of radiation coherence according to claim 2, which is characterized in that the cathode (1)
Using V-structure or needle-shaped emitter structure.
4. the pulsar X-ray simulation source of radiation coherence according to claim 1, which is characterized in that described primary poly-
Burnt pole (2) uses column construction, the making circular hole along cylindrical axis direction.
5. the pulsar X-ray simulation source of radiation coherence according to claim 1, which is characterized in that described primary poly-
The pressure differential range of the voltage on voltage and cathode (1) on burnt pole (2) is 0-500V.
6. the pulsar X-ray simulation source of radiation coherence according to claim 1, which is characterized in that the anode (3)
For the annular electrode of center aperture, anode (3) ground connection.
7. the pulsar X-ray simulation source of radiation coherence according to claim 1, which is characterized in that the period control
Pole (4) processed uses dipole field.
8. the pulsar X-ray simulation source of radiation coherence according to claim 1, which is characterized in that the prime focus
Pole shoe is arranged at position of the solenoid by near target using the solenoid wrapped up by soft iron shell in pole (5).
9. the pulsar X-ray simulation source of radiation coherence according to claim 1, which is characterized in that the target (6)
Material is metal.
10. the pulsar X-ray simulation source of radiation coherence according to claim 9, which is characterized in that the target (6)
Material be tungsten.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811003062.2A CN109192642A (en) | 2018-08-30 | 2018-08-30 | A kind of pulsar X-ray simulation source radiating coherence |
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| CN201811003062.2A CN109192642A (en) | 2018-08-30 | 2018-08-30 | A kind of pulsar X-ray simulation source radiating coherence |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109597144A (en) * | 2019-01-25 | 2019-04-09 | 北京空间飞行器总体设计部 | A kind of thermal vacuum test method suitable for the whole star of space X ray load |
| CN109738474A (en) * | 2019-01-28 | 2019-05-10 | 深圳市纳诺艾医疗科技有限公司 | A kind of adjustable local second-order fluorescence radiation appliance of power spectrum |
| CN112799120A (en) * | 2019-11-13 | 2021-05-14 | 中国科学院国家空间科学中心 | Double-channel electrostatic analyzer for ion and electron synchronous measurement |
| CN113140435A (en) * | 2021-03-05 | 2021-07-20 | 中国科学院国家空间科学中心 | Cathode front end high-pressure sealing structure for open type X-ray tube |
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| US6778633B1 (en) * | 1999-03-26 | 2004-08-17 | Bede Scientific Instruments Limited | Method and apparatus for prolonging the life of an X-ray target |
| CN1672635A (en) * | 2004-03-26 | 2005-09-28 | 株式会社岛津制作所 | X-ray generating apparatus |
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| CN106920723A (en) * | 2017-03-06 | 2017-07-04 | 聚束科技（北京）有限公司 | A kind of scanning focused system and electron beam control method |
| CN108463869A (en) * | 2016-01-29 | 2018-08-28 | 株式会社日立高新技术 | Charged particle beam apparatus and its optic axis adjusting method |
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Patent Citations (5)
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| US6778633B1 (en) * | 1999-03-26 | 2004-08-17 | Bede Scientific Instruments Limited | Method and apparatus for prolonging the life of an X-ray target |
| CN1672635A (en) * | 2004-03-26 | 2005-09-28 | 株式会社岛津制作所 | X-ray generating apparatus |
| CN104411081A (en) * | 2014-11-13 | 2015-03-11 | 重庆大学 | Linear array micro-nano focus X-ray source for micro-nano CT (computer tomography) system |
| CN108463869A (en) * | 2016-01-29 | 2018-08-28 | 株式会社日立高新技术 | Charged particle beam apparatus and its optic axis adjusting method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109597144A (en) * | 2019-01-25 | 2019-04-09 | 北京空间飞行器总体设计部 | A kind of thermal vacuum test method suitable for the whole star of space X ray load |
| CN109738474A (en) * | 2019-01-28 | 2019-05-10 | 深圳市纳诺艾医疗科技有限公司 | A kind of adjustable local second-order fluorescence radiation appliance of power spectrum |
| CN112799120A (en) * | 2019-11-13 | 2021-05-14 | 中国科学院国家空间科学中心 | Double-channel electrostatic analyzer for ion and electron synchronous measurement |
| CN112799120B (en) * | 2019-11-13 | 2024-03-22 | 中国科学院国家空间科学中心 | Dual-channel electrostatic analyzer for synchronous measurement of ions and electrons |
| CN113140435A (en) * | 2021-03-05 | 2021-07-20 | 中国科学院国家空间科学中心 | Cathode front end high-pressure sealing structure for open type X-ray tube |
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Application publication date: 20190111 |
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