GB1111121A - Improvements in and relating to pulse counting apparatus and to the measurement of radiation from radioactive materials using pulse counting apparatus - Google Patents
Improvements in and relating to pulse counting apparatus and to the measurement of radiation from radioactive materials using pulse counting apparatusInfo
- Publication number
- GB1111121A GB1111121A GB1425364A GB1425364A GB1111121A GB 1111121 A GB1111121 A GB 1111121A GB 1425364 A GB1425364 A GB 1425364A GB 1425364 A GB1425364 A GB 1425364A GB 1111121 A GB1111121 A GB 1111121A
- Authority
- GB
- United Kingdom
- Prior art keywords
- count
- background
- scaler
- measurement
- radiation
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T7/00—Details of radiation-measuring instruments
- G01T7/08—Means for conveying samples received
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)
- Nuclear Medicine (AREA)
Abstract
1,111,121. Counters. ISOTOPE DEVELOPMENTS Ltd. 26 April, 1965 [7 April, 1964], No. 14253/64. Heading G4D. [Also in Division G1] In pulse counting apparatus for measuring the radiation from radioactive samples presented sequentially by an automatic sample changer, during any one timed counting interval of a number of intervals which make up a complete sample measurement count, pulses are first counted by a background scaler 7a or 7b until the number of pulses counted becomes equal to a periodically updated, stored background count, and then the rest of the pulses for the interval are fed to the main scaler 3 to obtain the count representing the wanted radiation from the material. After each measurement, a trend follower unit 31 is arranged to receive only background pulses, and it responds to any significant change in the average level of the background radiation impulse rate by preventing the presentation, by the sample changer, of a new sample, and by initiating a fresh measurement of the background. This measurement is recorded in one of the two background scalers 7a, 7b, in a time interval determined by the selector 25. The count previously stored in the scaler 7a or 7b is cancelled and the new count read in. Then a new sample can be presented for measurement. Now, the signals are supplied so that the scaler having the stored background count recorded is reduced to zero, while the scaler previously recording a zero count is made to count upwards. When the background count is attained in the background scaler counting upwards (and zero attained in the other), further pulses are diverted to the main counter 3 to record the radiation from the sample. During the next timing interval, the operation of the scalers 7a, 7b is reversed, the background count afterwards still being retained in one of them. This process is repeated for a number of intervals, as stated above, until a predetermined count or time is attained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1425364A GB1111121A (en) | 1964-04-07 | 1964-04-07 | Improvements in and relating to pulse counting apparatus and to the measurement of radiation from radioactive materials using pulse counting apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1425364A GB1111121A (en) | 1964-04-07 | 1964-04-07 | Improvements in and relating to pulse counting apparatus and to the measurement of radiation from radioactive materials using pulse counting apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1111121A true GB1111121A (en) | 1968-04-24 |
Family
ID=10037806
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1425364A Expired GB1111121A (en) | 1964-04-07 | 1964-04-07 | Improvements in and relating to pulse counting apparatus and to the measurement of radiation from radioactive materials using pulse counting apparatus |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1111121A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2555760A1 (en) * | 1983-11-28 | 1985-05-31 | Commissariat Energie Atomique | METHOD AND APPARATUS FOR MEASURING THE ACTIVITY OF AT LEAST ONE RADIOACTIVE PRODUCT |
CN110196446A (en) * | 2019-05-23 | 2019-09-03 | 福州智元仪器设备有限公司 | A kind of quick and smooth method of high energy particle probe unit pulse frequency |
-
1964
- 1964-04-07 GB GB1425364A patent/GB1111121A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2555760A1 (en) * | 1983-11-28 | 1985-05-31 | Commissariat Energie Atomique | METHOD AND APPARATUS FOR MEASURING THE ACTIVITY OF AT LEAST ONE RADIOACTIVE PRODUCT |
EP0148657A2 (en) * | 1983-11-28 | 1985-07-17 | Commissariat A L'energie Atomique | Method and apparatus for measuring the activity of at least one radioactive product |
EP0148657A3 (en) * | 1983-11-28 | 1985-09-18 | Commissariat A L'energie Atomique Etablissement De Caractere Scientifique Technique Et Industriel | Method and apparatus for measuring the activity of at least one radioactive product |
CN110196446A (en) * | 2019-05-23 | 2019-09-03 | 福州智元仪器设备有限公司 | A kind of quick and smooth method of high energy particle probe unit pulse frequency |
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