CN202256689U - Novel double-anode counting tube - Google Patents
Novel double-anode counting tube Download PDFInfo
- Publication number
- CN202256689U CN202256689U CN2011203610218U CN201120361021U CN202256689U CN 202256689 U CN202256689 U CN 202256689U CN 2011203610218 U CN2011203610218 U CN 2011203610218U CN 201120361021 U CN201120361021 U CN 201120361021U CN 202256689 U CN202256689 U CN 202256689U
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- China
- Prior art keywords
- anode
- counter tube
- negative electrode
- counting tube
- cathode
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Abstract
The utility model discloses a novel double-anode counting tube which comprises a cathode (1), a left sealing material (2), a right sealing material (3), anodes (4) and working gas (5), wherein the left sealing material (2) and the right sealing material (3) are respectively connected to both ends of the cathode (1) in a sealing way and are made of molybdenum group glass, the working gas (5) is filled into an inner cavity of the cathode (1), the number of the anodes (4) is two, one ends of the anodes (4) are installed in the inner cavity of the cathode (1), and the other ends of the anodes (4) penetrate through the right sealing material (3) at one end of the cathode (1) and are also connected with the right sealing material (3) in a sealing way. According to the counting tube provided by the utility model, double anodes are adopted, the length of the counting tube can be shortened, the area of the cross section of the cathode of the counting tube is increased, the effective volume of the counting tube is increased, and the sensitivity of the counting tube is high. Compared with a counting tube with the same length, the counting rate at unit time can be enhanced by more than 200 percent, the metering error of the counting tube can be lowered by 10 percent, and the technical problem of large metering error in the miniaturization of the detection of nuclear radiation in the prior art can be solved.
Description
Technical field
The utility model relates to a kind of counter tube, specifically designs a kind of new type double anode counter tube.
Background technology
Geiger-Miller counter tube all adopts the column type cathode construction, along with the trend of nuclear radiation detection miniaturization, requires the counter tube volume more and more littler at present; But the counter tube volume reduces, and sensitivity also can reduce, and the unit interval counting rate reduces; Because the randomness of nuclear fission, the counting rate of counter tube has certain error range, requires the sensitivity of counter tube to want high; The unit interval counting rate is the bigger the better, and the stochastic error of nuclear fission causes the error in dipping of counter tube to reduce like this, and sensitivity reduces; The unit interval counting rate reduces, and can cause the error in dipping of counter tube to increase.So necessary to design a kind of volume on the basis of existing technology little, highly sensitive, the new type double anode counter tube that counting rate is big.
Summary of the invention
Goal of the invention: the purpose of the utility model is to the requirement of present nuclear radiation detection miniaturization for the counter tube miniaturization; Provide that a kind of length is short, volume is little, counter tube is highly sensitive; Counting rate is big; Error in dipping is little, can effectively improve the double anode counter tube of nuclear radiation detection metering accuracy.
Technical scheme: in order to realize above purpose, the technical scheme that the utility model is taked is:
A kind of new type double anode counter tube; It comprises negative electrode, sealing-in is at left encapsulant and right encapsulant, the anode processed by molybdenum group glass at negative electrode two ends and the working gas that is filled in cathode internal cavity respectively; Described anode is two; Wherein an end is installed in the cathode internal cavity, and an other end passes the right encapsulant of negative electrode one end, and in the sealing-in of right encapsulant phase.
As preferred version; Above-described new type double anode counter tube; The unsealed cylindroid cavity in two ends that described negative electrode is processed by the expansion alloy material, the utility model adopt the negative electrode of cylindroid cavity to compare with the circular cylindrical cavity negative electrode, have higher sensitivity and counting rate; Expansion alloy is a kind of a kind of Precise Alloy of unusual thermal expansion character, has good sealing-in property, weldability, corrosion stability, processibility and free-cutting machinability.
As preferred version, above-described new type double anode counter tube, described anode are the expansion alloy silk of diameter 0.5～2mm.The utility model adopts double anode, has shortened counter tube length, has increased the cross-sectional area of counter tube negative electrode; Effectively increase the active volume of counter tube, improve counter tube sensitivity, reduce the error in dipping of counter tube; Compare with prior art, can effectively improve the nuclear radiation detection metering accuracy.
As preferred version; Above-described new type double anode counter tube; Described negative electrode left side encapsulant and right encapsulant are molybdenum group glass and process, and as more preferably scheme, described left encapsulant and right encapsulant are the molybdenum group glass of DM308～DM320 type and process; Have and metal molybdenum or the close expansion coefficient of kovar alloy, effectively sealing-in sealed off counter negative electrode.
As preferred version, above-described new type double anode counter tube, described working gas are the bromine neon mixed gas of 13000～36000Pa.
During new type double anode counter tube real work that the utility model provides, on anode, add two groups of onesize positive voltages respectively, negative electrode adds negative voltage, when the radioactive source radiating particle gets into the counter tube space; Inert gas molecule impact ionization simultaneously generates electronics---ion pair around the double anode, and every anodic wire can both absorb the electronics of generation; Stay positive ion in large quantities, surround anode, form one " sheath " (being called the positive ion sheath); Electric field intensity is descended can not produce the electronics increment, gas discharge has also just stopped, behind the discharge off under electric field action; The positive ion sheath that quality is big slowly moves to negative electrode, reaches negative electrode, makes discharge off; Accomplished once numeration respectively, noted through sample circuit then, experiment shows to have excellent sensitivity and counting rate.
Beneficial effect: the new type double anode counter tube that the utility model provides is compared with the numeration pipe of prior art, has the following advantages:
The described new type double anode of the utility model counter tube adopts double anode, can shorten counter tube length; Increase the cross-sectional area of counter tube negative electrode, increase the active volume of counter tube, counter tube is highly sensitive; Compare with the counter tube of same length, the unit interval counting rate can improve more than 200%, and the error in dipping of counter tube can descend 10%; Can solve the big technical barrier of prior art nuclear radiation detection miniaturization error in dipping, the scope of application is extensive.
Description of drawings
Fig. 1 is the structural representation in the described new type double anode of the utility model counter tube longitudinal profile.
Embodiment
Below in conjunction with specific embodiment; Further illustrate the utility model; Should understand these embodiment only be used to the utility model is described and be not used in the restriction the utility model scope; After having read the utility model, those skilled in the art all fall within the application's accompanying claims institute restricted portion to the modification of the various equivalent form of values of the utility model.
As shown in Figure 1; A kind of new type double anode counter tube; It comprises negative electrode (1), respectively sealing-in is at left encapsulant (2) and right encapsulant (3), the anode (4) processed by molybdenum group glass at negative electrode (1) two ends and the working gas (5) that is filled in negative electrode (1) inner chamber, and described anode (4) is two, and wherein an end is installed in negative electrode (1) inner chamber; An other end passes the right encapsulant (3) of negative electrode (1) one end, and in right encapsulant (3) phase sealing-in.
Above-described new type double anode counter tube, the unsealed cylindroid cavity in two ends that described negative electrode (1) is processed by the expansion alloy material.
Above-described new type double anode counter tube, described anode (4) are the expansion alloy silk of diameter 0.5～2mm.
Above-described new type double anode counter tube, described working gas (5) are the bromine neon mixed gas of 13000～36000Pa.
The above only is the preferred implementation of the utility model; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; Can also make some improvement and retouching, these improvement and retouching also should be regarded as the protection domain of the utility model.
Claims (4)
1. new type double anode counter tube; It is characterized in that: it comprises negative electrode (1), respectively sealing-in is at left encapsulant (2) and right encapsulant (3), the anode (4) processed by molybdenum group glass at negative electrode (1) two ends and the working gas (5) that is filled in negative electrode (1) inner chamber; Described anode (4) is two; Wherein an end is installed in negative electrode (1) inner chamber, and an other end passes the right encapsulant (3) of negative electrode (1) one end, and in right encapsulant (3) phase sealing-in.
2. new type double anode counter tube according to claim 1 is characterized in that: the unsealed cylindroid cavity in two ends that described negative electrode (1) is processed by the expansion alloy material.
3. new type double anode counter tube according to claim 1 is characterized in that: described anode (4) is the expansion alloy silk of diameter 0.5～2mm.
4. according to each described new type double anode counter tube of claim 1 to 3, it is characterized in that: described working gas (5) is the bromine neon mixed gas of 13000～36000Pa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203610218U CN202256689U (en) | 2011-09-26 | 2011-09-26 | Novel double-anode counting tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203610218U CN202256689U (en) | 2011-09-26 | 2011-09-26 | Novel double-anode counting tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202256689U true CN202256689U (en) | 2012-05-30 |
Family
ID=46117908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203610218U Expired - Fee Related CN202256689U (en) | 2011-09-26 | 2011-09-26 | Novel double-anode counting tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202256689U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107870345A (en) * | 2017-12-06 | 2018-04-03 | 南京三乐集团有限公司 | A kind of high box hat counting tube of reliability |
| CN107978504A (en) * | 2017-12-31 | 2018-05-01 | 中国电子科技集团公司第十二研究所 | A kind of magnetron energy follower and the magnetron for including the energy follower |
-
2011
- 2011-09-26 CN CN2011203610218U patent/CN202256689U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107870345A (en) * | 2017-12-06 | 2018-04-03 | 南京三乐集团有限公司 | A kind of high box hat counting tube of reliability |
| CN107978504A (en) * | 2017-12-31 | 2018-05-01 | 中国电子科技集团公司第十二研究所 | A kind of magnetron energy follower and the magnetron for including the energy follower |
| CN107978504B (en) * | 2017-12-31 | 2024-04-12 | 中国电子科技集团公司第十二研究所 | Magnetron energy output device and magnetron comprising same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20160926 |