JPS626545Y2 - - Google Patents
Info
- Publication number
- JPS626545Y2 JPS626545Y2 JP1981094598U JP9459881U JPS626545Y2 JP S626545 Y2 JPS626545 Y2 JP S626545Y2 JP 1981094598 U JP1981094598 U JP 1981094598U JP 9459881 U JP9459881 U JP 9459881U JP S626545 Y2 JPS626545 Y2 JP S626545Y2
- Authority
- JP
- Japan
- Prior art keywords
- anode wire
- gas flow
- radiation detector
- metal plate
- wire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- 230000005855 radiation Effects 0.000 claims description 10
- 239000007789 gas Substances 0.000 description 10
- 229910000679 solder Inorganic materials 0.000 description 5
- 238000001514 detection method Methods 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000009760 electrical discharge machining Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000001282 iso-butane Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Landscapes
- Electron Tubes For Measurement (AREA)
Description
【考案の詳細な説明】
本考案は、高電圧が印加された電極線の近傍を
流れるガスが放射線の入射により電離することを
利用するガスフロー式放射線検出器に関する。[Detailed Description of the Invention] The present invention relates to a gas flow type radiation detector that utilizes the fact that gas flowing near an electrode wire to which a high voltage is applied is ionized by the incidence of radiation.
第１、第２図はこのようなガスフロー式放射線
検出器の一例を示し、入射窓１、枠２、底板３の
構成する容器の内部の絶縁支持体４の間に複数の
陽極線５が平行に張り渡されている。入射窓１、
枠２および底板３は内面で電気的に導通してお
り、これを陰極として例えばタングステンからな
る陽極線５に渡り線６を介して高電圧が印加され
る。底板３のガス導入口７からガス排出口８へ
PRガス（アルゴン90％＋メタン10％）またはＱ
ガス（ヘリウム99％＋イソブタン１％）が流され
る。陽極線５は、高電圧印加時に振動することの
ないようコイル状のばね９により一定の張力を与
えられ、第３図に拡大して示すように陽極線支持
片１０に接合され、支持片１０の先端は支持体４
に嵌められたスリーブ１１に軟ろう１２により固
定されている。しかしこの構造の検出器では、軟
ろう１２およびばね９が露出しているためコロナ
放電を起しやすい。その対策として、陽極線端部
構造を枠２の外側に配置することも考えられる
が、その部分が大気湿度で絶縁劣化する。あるい
は陽極線端部を絶縁材料で被覆することも考えら
れるが、この絶縁材料が高電圧の連続印加で劣化
してしまう。ばね９に対しては、これを絶縁管内
に収納する方法も考えられるが、それにより陽極
線の有効長が減少し、検出効率が低下する。 1 and 2 show an example of such a gas flow type radiation detector, in which a plurality of anode wires 5 are arranged between an insulating support 4 inside a container constituted by an entrance window 1, a frame 2, and a bottom plate 3. stretched in parallel. entrance window 1,
The frame 2 and the bottom plate 3 are electrically connected on their inner surfaces, and a high voltage is applied to the anode wire 5 made of, for example, tungsten via a crossover wire 6, using this as a cathode. From the gas inlet 7 of the bottom plate 3 to the gas outlet 8
PR gas (90% argon + 10% methane) or Q
Gas (99% helium + 1% isobutane) is flowed. The anode wire 5 is given a certain tension by a coiled spring 9 to prevent it from vibrating when a high voltage is applied, and is joined to the anode wire support piece 10 as shown in an enlarged view in FIG. The tip of the support body 4
It is fixed with soft solder 12 to a sleeve 11 fitted into the sleeve 11. However, in a detector having this structure, since the soft solder 12 and the spring 9 are exposed, corona discharge is likely to occur. As a countermeasure, it is possible to arrange the anode wire end structure outside the frame 2, but the insulation of that part deteriorates due to atmospheric humidity. Alternatively, it is possible to cover the end of the anode wire with an insulating material, but this insulating material deteriorates due to continuous application of high voltage. As for the spring 9, a method of storing it in an insulating tube may be considered, but this reduces the effective length of the anode wire and lowers the detection efficiency.
本考案はコロナ放電の起きる虞がなく、かつ長
期安定性を有するガスフロー式放射線検出器を提
供することを目的とする。 The object of the present invention is to provide a gas flow type radiation detector that is free from the risk of corona discharge and has long-term stability.
この目的は、本考案によれば一面に入射窓を有
する容器内に対向配置された二つの絶縁支持体間
に複数の電極線が張り渡され、各電極線の一端が
ばね性のある一つの金属板に固定されて、容器と
の間に高電圧が印加されるものにおいて、前記金
属板は帯状で中心にそれぞれ前記電極線が固定さ
れる複数の幅広部分を有し、該幅広部分にそれぞ
れ同心状に弧状空隙が設けられて、一方の支持体
の他方の支持体より遠い側に設けられた凹部内に
収容されることによつて達成される。 According to the present invention, a plurality of electrode wires are stretched between two insulating supports disposed oppositely in a container having an entrance window on one side, and one end of each electrode wire is connected to a spring-like structure. In a device that is fixed to a metal plate and a high voltage is applied between it and the container, the metal plate is strip-shaped and has a plurality of wide parts at the center to which the electrode wires are respectively fixed, and each of the wide parts has a plurality of wide parts. This is achieved by concentric arcuate gaps being accommodated in recesses provided on the side of one support further away from the other support.
以下、図を引用して本考案の実施例について説
明する。第４図ＡおよびそのＸ−X′線断面を示
す第４図Ｂにおいて、金属帯１３は、例えばりん
青銅またはステンレス鋼のようなばね性を有する
材料からなり、張り渡すべき陽極線の数に対応し
た幅の広い部分１４を有しており、この幅広部１
４にはプレス加工、エツチングあるいは放電加工
により円弧状の空隙１５が同心状に明けられる。
それらの空隙１５の中心に陽極線の支持片の挿入
孔１６が設けられている。このような金属帯１３
は、第５図に示すように放射線検出器の容器内の
絶縁支持体４の凹部４１内に収容され、幅広部１
４の縁部は凹部４１の縁の段部４２に支持され
る。幅広部１４の中心の挿入孔１６に陽極線５の
支持片１０を挿入し、軟ろう１２により金属帯に
固定すれば、陽極線５を張つた状態では図のよう
に幅広部分１４が陽極線側に向つて凹状に変形す
る。幅広部１４は同心状の空隙１５の存在により
板ばねとして作用し、陽極線５に一定の張力を与
える。板ばねとしての特性は金属帯１３の板厚と
空隙１５の寸法により任意に決定できる。陽極線
５への高電圧の印加は金属帯１３から幅広部１４
の連結部１７を介して行われるので、接続のため
の渡り線を設ける必要がない。この構造において
は、陽極線５自体はコイル状のばね部分がなく、
また支持片１０の頭部の軟ろう１２は絶縁支持体
４の凹部４１内に沈んでいるので、電界集中がな
くなつて強い電界強度の生じることがなく、コロ
ナ放電が起らない。その上陽極線５にばね部分が
ないから、陽極線５の有効長が長くなり、検出効
率が向上する。 Embodiments of the present invention will be described below with reference to the drawings. In FIG. 4A and FIG. 4B, which shows a cross section taken along the line It has a corresponding wide part 14, and this wide part 1
4, arc-shaped voids 15 are formed concentrically by pressing, etching, or electrical discharge machining.
An insertion hole 16 for an anode wire support piece is provided at the center of these gaps 15. Metal band 13 like this
is accommodated in the recess 41 of the insulating support 4 in the container of the radiation detector as shown in FIG.
4 is supported by a step 42 at the edge of the recess 41. If the support piece 10 of the anode wire 5 is inserted into the insertion hole 16 at the center of the wide part 14 and fixed to the metal band with soft solder 12, the wide part 14 will be attached to the anode wire as shown in the figure when the anode wire 5 is stretched. It deforms into a concave shape towards the side. The wide portion 14 acts as a leaf spring due to the presence of the concentric gap 15, and applies a constant tension to the anode wire 5. The characteristics as a leaf spring can be arbitrarily determined by the thickness of the metal band 13 and the size of the gap 15. High voltage is applied to the anode wire 5 from the metal band 13 to the wide part 14.
Since the connection is made via the connecting portion 17, there is no need to provide a crossover wire for connection. In this structure, the anode wire 5 itself does not have a coiled spring part,
Furthermore, since the soft solder 12 at the head of the support piece 10 is sunk into the recess 41 of the insulating support 4, there is no electric field concentration, no strong electric field strength is generated, and no corona discharge occurs. Moreover, since the anode wire 5 does not have a spring portion, the effective length of the anode wire 5 becomes longer, and the detection efficiency improves.
以上述べたように、本考案はガスフロー式放射
線検出器の陽極線の張力を絶縁支持体の凹部内に
沈められる板ばねによつて加えるとともに、陽極
線への高電圧の印加を板ばねを介して行うもの
で、これにより、電界の集中が起こる部分をなく
し、劣化のおそれのある絶縁体を付加することな
くコロナ放電の発生が防止できるので、検出効率
および信頼性の高いガスフロー式放射線検出器を
得ることができる。 As described above, the present invention applies tension to the anode wire of a gas flow radiation detector using a leaf spring sunk into the recess of the insulating support, and applies high voltage to the anode wire using the leaf spring. This eliminates areas where electric fields are concentrated and prevents corona discharge without adding an insulator that may deteriorate, making it possible to use gas flow radiation with high detection efficiency and reliability. A detector can be obtained.
第１図は従来のガスフロー式放射線検出器の平
面図、第２図はその断面図、第３図はその陽極線
端部の拡大図、第４図Ａは本考案による金属板の
一実施例の部分平面図、第４図ＢはそのＸ−
X′線断面図、第５図は第４図の金属板を装着し
た絶縁支持体の断面図である。
１……入射窓、２……枠、３……底板、４……
絶縁支持体、５……陽極線、１０……陽極線支持
片、１２……軟ろう、１３……金属帯、１４……
幅広部、１５……空隙、１６……支持片挿入孔。
Fig. 1 is a plan view of a conventional gas flow radiation detector, Fig. 2 is a sectional view thereof, Fig. 3 is an enlarged view of the end of the anode wire, and Fig. 4A is an implementation of the metal plate according to the present invention. A partial plan view of the example, FIG. 4B is the X-
FIG. 5 is a sectional view taken along the line X', and is a sectional view of the insulating support to which the metal plate of FIG. 4 is attached. 1...Incidence window, 2...Frame, 3...Bottom plate, 4...
Insulating support, 5...Anode wire, 10...Anode wire support piece, 12...Soft solder, 13...Metal band, 14...
Wide portion, 15... void, 16... support piece insertion hole.
Claims (1)
二つの絶縁支持体間に複数の電極線が張り渡さ
れ、各電極線の一端がばね性のある一つの金属板
に固定されて、容器との間に高電圧が印加される
ものにおいて、前記金属板は帯状で中心にそれぞ
れ前記電極線の一端が固定される複数の幅広部分
を有し、該幅広部分にそれぞれ同心状に弧状空隙
が設けられて、一方の支持体の他方の支持体より
遠い側に設けられた凹部内に収容されたことを特
徴とするガスフロー式放射線検出器。 A plurality of electrode wires are stretched between two insulating supports placed opposite each other in a container that has an entrance window on one side, and one end of each electrode wire is fixed to one springy metal plate. The metal plate is strip-shaped and has a plurality of wide parts at the center to which one end of the electrode wire is fixed, and each of the wide parts is provided with an arc-shaped gap concentrically. 1. A gas flow type radiation detector, characterized in that the gas flow type radiation detector is housed in a recess provided on a side of one support body farther from the other support body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9459881U JPS581180U (en) | 1981-06-26 | 1981-06-26 | Gas flow radiation detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9459881U JPS581180U (en) | 1981-06-26 | 1981-06-26 | Gas flow radiation detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS581180U JPS581180U (en) | 1983-01-06 |
| JPS626545Y2 true JPS626545Y2 (en) | 1987-02-14 |
Family
ID=29889518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9459881U Granted JPS581180U (en) | 1981-06-26 | 1981-06-26 | Gas flow radiation detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS581180U (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58170956U (en) * | 1982-05-11 | 1983-11-15 | 東洋理工株式会社 | Cage retention mechanism in automatic water supply stand |
| JPS59150256U (en) * | 1983-03-25 | 1984-10-08 | 株式会社夏目製作所 | Rack fall prevention device for laboratory animal cages |
| JP2005156463A (en) * | 2003-11-27 | 2005-06-16 | Mitsubishi Heavy Ind Ltd | Alpha-radioactivity measuring apparatus and ionization chamber for apparatus |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5578269A (en) * | 1978-12-09 | 1980-06-12 | Fuji Electric Co Ltd | Gas flow counter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5063075U (en) * | 1973-10-09 | 1975-06-09 |
-
1981
- 1981-06-26 JP JP9459881U patent/JPS581180U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5578269A (en) * | 1978-12-09 | 1980-06-12 | Fuji Electric Co Ltd | Gas flow counter |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS581180U (en) | 1983-01-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS60225407A (en) | High-frequency coil | |
| US3988053A (en) | Hermetic terminal | |
| JPS626545Y2 (en) | ||
| US3809940A (en) | Radiation detector of elongated length with electrode support assembly therefor | |
| JPS60173883A (en) | Superconductive magnet | |
| JPS62163543A (en) | Brush gear assembly unit for motor | |
| JPS5823705B2 (en) | radiation detector | |
| US3891882A (en) | Ionization gauge | |
| FR2357998A1 (en) | METHOD OF MANUFACTURING SENSITIVE ELEMENTS WITH A PERMANENT ELECTRICAL POLARIZATION OF IMPLEMENTATION | |
| US2250409A (en) | Cathode locating and anchoring means for discharge tubes or the like | |
| JPS5938736Y2 (en) | Holding container for piezoelectric vibrator | |
| JPS63252279A (en) | Gas filled x-ray detector | |
| US2898503A (en) | Filamentary stacked triode | |
| JPS6025322U (en) | Insulation spacer for gas insulated electrical equipment | |
| JP2996680B2 (en) | Fission-type ionization chamber for neutron detection | |
| JPS5829478B2 (en) | gas flow counter | |
| JPS5849635Y2 (en) | semiconductor equipment | |
| JPS6122308U (en) | thermistor | |
| JP2530944Y2 (en) | Mercury contact relay | |
| JPS6323874Y2 (en) | ||
| JPS5824452Y2 (en) | semiconductor equipment | |
| JPS5844598Y2 (en) | Series connected semiconductor device | |
| JPH0215302Y2 (en) | ||
| JPS58142759A (en) | Storage battery | |
| JPS594484U (en) | Ionization chamber radiation detector |