CN103367083A - Small-beam-spot X-ray equipment - Google Patents
Small-beam-spot X-ray equipment Download PDFInfo
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- CN103367083A CN103367083A CN2013102881837A CN201310288183A CN103367083A CN 103367083 A CN103367083 A CN 103367083A CN 2013102881837 A CN2013102881837 A CN 2013102881837A CN 201310288183 A CN201310288183 A CN 201310288183A CN 103367083 A CN103367083 A CN 103367083A
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Abstract
The invention discloses small-beam-spot X-ray equipment. A conventional filament electronic gun has the defects of large area of a cathode emitting point source and larger size of an electronic source size. A field emitting electronic gun cathode device is arranged in a X-ray sealing sleeve; the field emitting electronic gun cathode device comprises a field emitting filament connected with a flashing power supply; a field emitting power supply is connected between the field emitting filament and a field emitting power supply anode; the field emitting filament is used for emitting electronic beams under a strong electronic field generated by the field emitting power supply; the electronic beams move towards an accelerating power supply anode through an accelerating power supply, and obtain high energy and become high-energy electronic beams after being accelerated; the high-energy electronic beams are irradiated onto a target cooled by using an annular target cooling water device to generate X-rays; and the generated X-rays are emitted out of the X-ray sealing sleeve through a beryllium window. According to the small-beam-spot X-ray equipment, the electronic beams of very small beam spots generated by a field emitting cathode are used for exciting an anode target, and the light spot effects of the X-rays can reach an approximate spot light source effect.
Description
Technical field
The invention belongs to technical field of medical instruments, relate to a kind of tuftlet spot X-ray equipment.
Background technology
In medical science and industrial production, for X-ray equipment is used in diagnosis.This X-ray equipment has the X-radiation device, and this X-radiation device comprises again the X-ray tube for generation of X ray.In evacuated X-ray tube, be provided with the negative electrode of electron emission.By high pressure, these electronics accelerate towards the direction of anode, are penetrated at last in the anode material, produce thus X ray.
Traditional filament electronic rifle cathode emission point source area is large, therefore electron source size also larger (about 50～100 μ m), so that the bundle spot area of the x ray that negative electrode x ray tube produces is larger, image quality is relatively poor, and, because x-ray photon has scattering, when the X ray of large beam spot acts on subject, the body part that does not need to check also can receive the irradiation of part X ray, thereby subject is damaged.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, a kind of tuftlet spot X-ray equipment is provided.
The technical scheme that technical solution problem of the present invention is taked is:
Tuftlet spot x ray equipment is equipped with the field emission gun, cathode assembly in the X ray seal sleeve, described field emission gun, cathode assembly comprises the field emission filament that connects flashing power source, is connected a field emission power between an emission filament and the emission power anode; Launch electron beam under the highfield that field emission filament emission power on the scene produces, electron beam by accelerating power source to the accelerating power source anode movement, obtain high-energy after accelerating, make it become high-power electron beam, high-power electron beam shines on the target that utilizes the cooling of ring-type target chilled water unit, produces X ray; The X ray that produces penetrates the X ray seal sleeve by the beryllium window.
Beneficial effect of the present invention: the electron beam of the beam spot size very little (can arrive the nm magnitude) that this device use field-transmitting cathode produces comes the excitation anode target, makes the hot spot effect of X ray can reach approximate point-source of light effect.In the X ray Non-Destructive Testing, use this device, when imaging, can make the radioscopic image definition higher, and can avoid unnecessary injury is caused at other positions of health.
Description of drawings
Fig. 1 is structural representation of the present invention.
Embodiment
As shown in Figure 1, in the X ray seal sleeve 1 of vacuum, the field emission gun, cathode assembly is housed.This field emission gun, cathode assembly comprises the field emission filament 3 that connects flashing power source 2.Be connected a field emission power 5 between emission filament 3 and the emission power anode 4.Launch electron beam 6 under the highfield that field emission filament 3 emission powers 5 on the scene produce.Electron beam 6 moves to accelerating power source anode 8 by accelerating power source 7, obtain very high energy after accelerating, high-power electron beam shines and produces X ray 11 on the target 10 that utilizes 9 coolings of ring-type target chilled water unit, because target 10 is thinner, 11 of the X ray of generation pass through beryllium window 12 and penetrate X-ray tubes.
Claims (1)
1. tuftlet spot X-ray equipment, it is characterized in that: the field emission gun, cathode assembly is housed in the X ray seal sleeve, described field emission gun, cathode assembly comprises the field emission filament that connects flashing power source, is connected a field emission power between an emission filament and the emission power anode; Launch electron beam under the highfield that field emission filament emission power on the scene produces, electron beam by accelerating power source to the accelerating power source anode movement, obtain high-energy after accelerating, make it become high-power electron beam, high-power electron beam shines on the target that utilizes the cooling of ring-type target chilled water unit, produces X ray; The X ray that produces penetrates the X ray seal sleeve by the beryllium window.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102881837A CN103367083A (en) | 2013-07-10 | 2013-07-10 | Small-beam-spot X-ray equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102881837A CN103367083A (en) | 2013-07-10 | 2013-07-10 | Small-beam-spot X-ray equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103367083A true CN103367083A (en) | 2013-10-23 |
Family
ID=49368198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102881837A Pending CN103367083A (en) | 2013-07-10 | 2013-07-10 | Small-beam-spot X-ray equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103367083A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113225886A (en) * | 2021-07-07 | 2021-08-06 | 中国工程物理研究院应用电子学研究所 | Water-cooling rotary radiation conversion target for high-energy microfocus X-ray |
| CN113764244A (en) * | 2020-06-03 | 2021-12-07 | 西门子医疗有限公司 | X-ray radiator and X-ray device |
| CN114512378A (en) * | 2022-02-18 | 2022-05-17 | 西湖大学 | Electron emission device and electronic device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1509778A (en) * | 2002-09-24 | 2004-07-07 | ������ҽ�ƽ�������˾ | Tungsten composite X-ray target assembly for radioactive treatment |
| CN1917135A (en) * | 2006-09-07 | 2007-02-21 | 深圳大学 | New X ray tube, and fabricating method |
| WO2012025136A1 (en) * | 2010-08-27 | 2012-03-01 | Ge Sensing & Inspection Technologies Gmbh | Microfocus x-ray tube for a high-resolution x-ray apparatus |
| CN203415538U (en) * | 2013-07-10 | 2014-01-29 | 杭州电子科技大学 | Small beam spot X-ray equipment |
-
2013
- 2013-07-10 CN CN2013102881837A patent/CN103367083A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1509778A (en) * | 2002-09-24 | 2004-07-07 | ������ҽ�ƽ�������˾ | Tungsten composite X-ray target assembly for radioactive treatment |
| CN1917135A (en) * | 2006-09-07 | 2007-02-21 | 深圳大学 | New X ray tube, and fabricating method |
| WO2012025136A1 (en) * | 2010-08-27 | 2012-03-01 | Ge Sensing & Inspection Technologies Gmbh | Microfocus x-ray tube for a high-resolution x-ray apparatus |
| CN203415538U (en) * | 2013-07-10 | 2014-01-29 | 杭州电子科技大学 | Small beam spot X-ray equipment |
Non-Patent Citations (1)
| Title |
|---|
| 无: "《用碳纳米管场发射阴极产生连续和脉冲诊断成像X射线辐射》", 《激光与光电子学进展》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113764244A (en) * | 2020-06-03 | 2021-12-07 | 西门子医疗有限公司 | X-ray radiator and X-ray device |
| CN113764244B (en) * | 2020-06-03 | 2023-10-03 | 西门子医疗有限公司 | X-ray radiator and X-ray device |
| CN113225886A (en) * | 2021-07-07 | 2021-08-06 | 中国工程物理研究院应用电子学研究所 | Water-cooling rotary radiation conversion target for high-energy microfocus X-ray |
| CN114512378A (en) * | 2022-02-18 | 2022-05-17 | 西湖大学 | Electron emission device and electronic device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131023 |