JPS57172271A - Ionization chamber for analyzing microelement - Google Patents
Ionization chamber for analyzing microelementInfo
- Publication number
- JPS57172271A JPS57172271A JP5711181A JP5711181A JPS57172271A JP S57172271 A JPS57172271 A JP S57172271A JP 5711181 A JP5711181 A JP 5711181A JP 5711181 A JP5711181 A JP 5711181A JP S57172271 A JPS57172271 A JP S57172271A
- Authority
- JP
- Japan
- Prior art keywords
- rays
- gamma
- ionization
- neutron
- ionization chamber
- 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.)
- Pending
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
- H01J47/02—Ionisation chambers
Landscapes
- Measurement Of Radiation (AREA)
- Electron Tubes For Measurement (AREA)
Abstract
PURPOSE:To reduce background noises due to gamma-rays and to analyze a microelement with high accuracy, by applying a neutron absorbing material of boron, etc., on one counter electrode surface of 2 ionization chambers. CONSTITUTION:In order to reduce (alpha) rays incident to an ionization measuring area from materials other than a material to be measured, or a signal of a fission piece, an organic material whose uranium content is small is used for current collecting electrodes 2, 3, and its surface is covered with a metallic film 14. Also, in order to reduce background noises due to gamma-rays, a neutron absorbing material 15 of boron, etc. is applied on the counter electrode surface of one ionization chamber of 2 ionization chambers partitioned by a high voltage electrode 1. According to this constitution, the gamma-rays are sensed by both the ionization chambers, but a neutron is sensed by only one ionization chamber, therefore, a current by the gamma-rays is removed by only differentially amplifying a signal from the current collecting electrodes 2, 3, and only a current by the neutron is obtained as an output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5711181A JPS57172271A (en) | 1981-04-17 | 1981-04-17 | Ionization chamber for analyzing microelement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5711181A JPS57172271A (en) | 1981-04-17 | 1981-04-17 | Ionization chamber for analyzing microelement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57172271A true JPS57172271A (en) | 1982-10-23 |
Family
ID=13046405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5711181A Pending JPS57172271A (en) | 1981-04-17 | 1981-04-17 | Ionization chamber for analyzing microelement |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57172271A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6033672U (en) * | 1983-08-12 | 1985-03-07 | 日本冶金化学工業株式会社 | Background gamma-ray compensated gas flow detector for α/β-ray detection |
-
1981
- 1981-04-17 JP JP5711181A patent/JPS57172271A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6033672U (en) * | 1983-08-12 | 1985-03-07 | 日本冶金化学工業株式会社 | Background gamma-ray compensated gas flow detector for α/β-ray detection |
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