In:
Japanese Journal of Applied Physics, IOP Publishing, Vol. 7, No. 6 ( 1968-06-01), p. 666-
Abstract:
In order to obtain good statistics in low-background radiation measurements a fairly long counting time is necessary. Therefore the experimental accuracy depends tightly on the gain stability of counting system. A standard sample and a test sample are alternately measured for a certain interval, T , and finally the accumulated counts minus background counts for the respective samples are compared. Then it is expected that the effects due to the gain variations having time constants several times larger than T can be cancelled out from the ratio. By using a liquid scintillation counter system it is proved, in the present research, that there are suitable alternation intervals for the required experimental precision and the distributions of the results obtained for these intervals are discussed. In the case of interval T =200 sec. the observed results agree with the expected values in the precision of ±0.15% in a wide range of sample counting rate.
Type of Medium:
Online Resource
ISSN:
0021-4922
,
1347-4065
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
1968
detail.hit.zdb_id:
218223-3
detail.hit.zdb_id:
797294-5
detail.hit.zdb_id:
2006801-3
detail.hit.zdb_id:
797295-7
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