JPS57200882A - Boron trifluoride proportional counter - Google Patents
Boron trifluoride proportional counterInfo
- Publication number
- JPS57200882A JPS57200882A JP8665881A JP8665881A JPS57200882A JP S57200882 A JPS57200882 A JP S57200882A JP 8665881 A JP8665881 A JP 8665881A JP 8665881 A JP8665881 A JP 8665881A JP S57200882 A JPS57200882 A JP S57200882A
- Authority
- JP
- Japan
- Prior art keywords
- getter
- graphite
- temperature
- neutrons
- act
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J47/00—Tubes for determining the presence, intensity, density or energy of radiation or particles
- H01J47/12—Neutron detector tubes, e.g. BF3 tubes
- H01J47/1272—BF3 tubes
Landscapes
- Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
- Measurement Of Radiation (AREA)
Abstract
PURPOSE:To enable a highly accurate measurement of neutrons in a wide range of temperature with a higher radioactivity by employing one kind or more of activated carbon and graphite and Al for a BF3 proportional counter as getter. CONSTITUTION:A BF3 gas 5 is put into a hollow cylinder 8 to be made a cathode and with terminal plates 3a and 3b closed, an anode 2 is spread on the center line thereof insulated from the cathod 8 while a connector 6 is mounted on the terminal plate 3b to draw electric signals. In a neutron detecting proportional measuring tube of such a type, one kind or more of activated charcoal and graphite are applied 9 on a part of the inner surface of the Al cylinder or granular matters thereof are sealed into the end of the tube. With such an arrangement, the activated charcoal and graphite act as getter up to about 150 deg.C but fail to do so over 200 deg.C and in stead Al starts to act as getter. Thus, the action of the getter can be retained at a high temperature of above 250 deg.C thereby enabling the detection and counting of neutrons in such a manner as to minimize deterioration in radiation in a wide range of temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8665881A JPS57200882A (en) | 1981-06-04 | 1981-06-04 | Boron trifluoride proportional counter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8665881A JPS57200882A (en) | 1981-06-04 | 1981-06-04 | Boron trifluoride proportional counter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57200882A true JPS57200882A (en) | 1982-12-09 |
| JPS6135657B2 JPS6135657B2 (en) | 1986-08-14 |
Family
ID=13893128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8665881A Granted JPS57200882A (en) | 1981-06-04 | 1981-06-04 | Boron trifluoride proportional counter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57200882A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6341860U (en) * | 1986-09-02 | 1988-03-18 | ||
| US5386114A (en) * | 1992-12-25 | 1995-01-31 | Riken Denshi Co., Ltd. | Detector for activity direction of magma |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0330295U (en) * | 1989-07-31 | 1991-03-25 |
-
1981
- 1981-06-04 JP JP8665881A patent/JPS57200882A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6341860U (en) * | 1986-09-02 | 1988-03-18 | ||
| US5386114A (en) * | 1992-12-25 | 1995-01-31 | Riken Denshi Co., Ltd. | Detector for activity direction of magma |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6135657B2 (en) | 1986-08-14 |
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