CN200990362Y - Side window X-ray tube - Google Patents
Side window X-ray tube Download PDFInfo
- Publication number
- CN200990362Y CN200990362Y CN 200620134242 CN200620134242U CN200990362Y CN 200990362 Y CN200990362 Y CN 200990362Y CN 200620134242 CN200620134242 CN 200620134242 CN 200620134242 U CN200620134242 U CN 200620134242U CN 200990362 Y CN200990362 Y CN 200990362Y
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- electron beam
- ray tube
- window
- cathode filament
- ray
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Abstract
The utility model relates to a side window X ray tube, which comprises an outer shell, a cathode filament for emitting electron beam, an anode target and a beryllium window. Wherein the cathode filament is enveloped in the outer shell and the anode target is arranged in front of the cathode filament, while the included angle between the surface of anode target and the electron beam is smaller than 60 degrees and the beryllium window is arranged on the lateral side of the outer shell; the included angle between the focus connected line of the electron beam to the position where the beryllium window is arranged and the electron beam is 50 degrees to 70 degrees. The utility model has the advantages of that the bremstrahlen intensity of the X ray can reach the maximum value so that the X ray fluorescence analyzer can meet the measuring requirement of thirty to forty elements and at the same time has higher requirement of the detection limit of the instrument.
Description
Technical field
The utility model relates to a kind of side window X-ray tube, belongs to the xrf analysis instrument field.
Background technology
X-ray tube is the core component in the xrf analysis instrument, and its performance is directly connected to the performance index of instrument.The X-ray tube of existing side window structure adopts straight target structure, referring to accompanying drawing 1, the anode target surface is vertical with the direction of electron beam, and the outgoing X ray becomes a less angle with the anode target surface, and promptly outgoing X ray and electron beam transmit direction are approximated to 90 ° of (being slightly less than 90 °) angles.The bremsstrahlung intensity of the X ray of outgoing does not reach maximum under this condition.Because we need instrument can satisfy measurement requirement to 30 to 40 kinds of elements, simultaneously having relatively high expectations for the instrument detection limit.And the performance index of the X-ray tube of existing side window structure can't guarantee that the instrument detection limit reaches such analysis requirement.
The utility model content
The purpose of this utility model is to provide a kind of side window X-ray tube, effectively improves the bremsstrahlung intensity of X ray, and the performance index of X-ray tube are improved.
A kind of side window X-ray tube described in the utility model comprises shell, is used for cathode filament, plate target, the beryllium window of divergent bundle.Wherein cathode filament is packaged in the shell, plate target is arranged at the place ahead of cathode filament, angle between the direction of anode target surface and electron beam is less than 60 °, the beryllium window is arranged on the side of shell, the position at beryllium window place is 50 °～70 ° to the angle between electron beam focus line and the electron beam, and the X ray that makes exit direction with electron beam be approximated to 60 ° can penetrate by the beryllium window.
The advantage of a kind of side window X-ray tube described in the utility model is: the bremsstrahlung intensity of X ray can reach maximum, makes the xrf analysis instrument can satisfy the measurement requirement to 30 to 40 kinds of elements, makes the instrument detection limit higher simultaneously.
Below in conjunction with drawings and Examples the utility model is described further.
Description of drawings
Fig. 1 is the structural representation of existing side window X-ray tube;
Fig. 2 is the structural representation of the utility model side window X-ray tube;
Embodiment
The described a kind of side window X-ray tube of present embodiment by shown in Figure 2, comprises shell 3, is used for cathode filament 4, plate target 1, the beryllium window 2 of divergent bundle 5.Wherein cathode filament 4 is packaged in the shell 3, plate target 1 is arranged at the place ahead of cathode filament 4, angle between the target surface of plate target 1 and electron beam 5 exit directions is 50 °～60 °, beryllium window 2 is arranged on the side of shell 3, and the position at beryllium window 2 places is approximate 60 ° to the angle between electron beam focus line and the electron beam 5.
The described side window X-ray tube of present embodiment is in when work, and cathode filament 4 sends electron beam 5 and bombards the X ray that produces on the target surface of plate target 1, wherein is approximated to 60 ° X ray 6 with electron beam 5 exit directions and is able to penetrate by beryllium window 2.The bremsstrahlung intensity of this part X ray is stronger than other direction.Therefore use the X-ray tube of this structure that the detection limit of X-ray analyzer device is improved greatly.
Claims (3)
1. side window X-ray tube, it is characterized in that: comprise shell, be used for cathode filament, plate target, the beryllium window of divergent bundle, wherein cathode filament is packaged in the shell, plate target is arranged at the place ahead of cathode filament, angle between the direction of anode target surface and electron beam is less than 60 °, the beryllium window is arranged on the side of shell, and the position at beryllium window place is 50 °～70 ° to the angle between electron beam focus line and the electron beam.
2. a kind of side window X-ray tube as claimed in claim 1 is characterized in that: the angle between the direction of described anode target surface and electron beam is 50 °～60 °.
3. a kind of side window X-ray tube as claimed in claim 1 is characterized in that: the position at beryllium window place is approximate 60 ° to the angle between electron beam focus line and the electron beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620134242 CN200990362Y (en) | 2006-11-02 | 2006-11-02 | Side window X-ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620134242 CN200990362Y (en) | 2006-11-02 | 2006-11-02 | Side window X-ray tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200990362Y true CN200990362Y (en) | 2007-12-12 |
Family
ID=38941395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620134242 Expired - Lifetime CN200990362Y (en) | 2006-11-02 | 2006-11-02 | Side window X-ray tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200990362Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103929870A (en) * | 2014-03-25 | 2014-07-16 | 大连交通大学 | X-ray source |
| CN103943444A (en) * | 2013-01-22 | 2014-07-23 | 上海联影医疗科技有限公司 | Double-window X-ray bulb tube and X-ray photographing system |
| CN111524774A (en) * | 2020-07-06 | 2020-08-11 | 成都理工大学 | Large-caliber diamond side window miniature X-ray tube and packaging method |
-
2006
- 2006-11-02 CN CN 200620134242 patent/CN200990362Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103943444A (en) * | 2013-01-22 | 2014-07-23 | 上海联影医疗科技有限公司 | Double-window X-ray bulb tube and X-ray photographing system |
| CN103929870A (en) * | 2014-03-25 | 2014-07-16 | 大连交通大学 | X-ray source |
| CN103929870B (en) * | 2014-03-25 | 2016-12-07 | 大连交通大学 | A kind of x-ray source |
| CN111524774A (en) * | 2020-07-06 | 2020-08-11 | 成都理工大学 | Large-caliber diamond side window miniature X-ray tube and packaging method |
| CN111524774B (en) * | 2020-07-06 | 2020-09-22 | 成都理工大学 | Large-caliber diamond side window miniature X-ray tube and packaging method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BEIJING PUXI GENERAL INSTRUMENT CO., LTD. Free format text: FORMER OWNER: BEIJING PUXI SCIENTIFIC INSTRUMENTS CO., LTD. Effective date: 20090327 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090327 Address after: No. 3, Ping three road, Pinggu District, Beijing, China: 101200 Patentee after: Puxi General Instrument Co., Ltd., Beijing Address before: Granville Technology Building 8, Zhongguancun South Avenue, Beijing, Haidian District, China: 100081 Patentee before: Beijing Puxi Scientific Instrument Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20071212 |
|
| EXPY | Termination of patent right or utility model |