JPS57153287A - Measuring method for minute quantity of radiation - Google Patents
Measuring method for minute quantity of radiationInfo
- Publication number
- JPS57153287A JPS57153287A JP3984081A JP3984081A JPS57153287A JP S57153287 A JPS57153287 A JP S57153287A JP 3984081 A JP3984081 A JP 3984081A JP 3984081 A JP3984081 A JP 3984081A JP S57153287 A JPS57153287 A JP S57153287A
- Authority
- JP
- Japan
- Prior art keywords
- radiation
- sample
- dose
- expression
- measurement
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Molecular Biology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Measurement Of Radiation (AREA)
Abstract
PURPOSE:To measure a minute quantity of radiation under a much fluctuating background with a high precision, by performing the measurement in two positions, where the relative distance between a sample and a detector is different, alternately many times in a short time. CONSTITUTION:A sample 2 is put in a shelter 4 and is set on a sample moving device 8. The measurement for the radiation from the sample is perfomred in two positions, a measure sample position A and a measure sample position B alternately many times for every prescribed time DELTAt. Measured values of the dose of radiation for relative distance L and M (L<M) are obtained as shown in expression (1). In expression (l), (n) is the number of times of measurement. A ratio 1:alpha of the dose of radiation for relative distances L and M which is obtained preliminarily by using a standard radiation source of a large dose of radiation is used to obtain a dose of radiation for the relative distance L as shown in figure (2). In expression (2), K is count efficiency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3984081A JPS57153287A (en) | 1981-03-18 | 1981-03-18 | Measuring method for minute quantity of radiation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3984081A JPS57153287A (en) | 1981-03-18 | 1981-03-18 | Measuring method for minute quantity of radiation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57153287A true JPS57153287A (en) | 1982-09-21 |
Family
ID=12564153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3984081A Pending JPS57153287A (en) | 1981-03-18 | 1981-03-18 | Measuring method for minute quantity of radiation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57153287A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62282287A (en) * | 1986-05-30 | 1987-12-08 | Shimizu Constr Co Ltd | Method and apparatus for measuring radioactivity level under high background |
| JP2006153551A (en) * | 2004-11-26 | 2006-06-15 | Fuji Electric Systems Co Ltd | Monitor for product carrying-out |
| JP2008298574A (en) * | 2007-05-31 | 2008-12-11 | Nihon Medi Physics Co Ltd | Radiation shield apparatus |
-
1981
- 1981-03-18 JP JP3984081A patent/JPS57153287A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62282287A (en) * | 1986-05-30 | 1987-12-08 | Shimizu Constr Co Ltd | Method and apparatus for measuring radioactivity level under high background |
| JP2006153551A (en) * | 2004-11-26 | 2006-06-15 | Fuji Electric Systems Co Ltd | Monitor for product carrying-out |
| JP4513529B2 (en) * | 2004-11-26 | 2010-07-28 | 富士電機システムズ株式会社 | Article removal monitor |
| JP2008298574A (en) * | 2007-05-31 | 2008-12-11 | Nihon Medi Physics Co Ltd | Radiation shield apparatus |
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