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Half-life measurements of 87Rb by liquid scintillation counting
被引:40
|作者:
Kossert, K
[1
]
机构:
[1] Phys Tech Bundesanstalt, Dept 6 1, D-38116 Braunschweig, Germany
关键词:
liquid scintillation counting;
CIEMAT/NIST method;
half-life measurement;
beta spectrum;
D O I:
10.1016/j.apradiso.2003.08.004
中图分类号:
O61 [无机化学];
学科分类号:
070301 ;
081704 ;
摘要:
The specific activity of natural Rb-87 was measured by means of 4pibeta liquid scintillation counting in a two-photomultiplier-tube spectrometer. H-3-efficiency tracing was used together with the CIEMAT/NIST method to obtain the detection efficiency. For this purpose a new parameterization of the shape factor for the third forbidden non-unique beta-transition was performed. The hygroscopic behaviour of the salts used for sample preparation was studied. The half-life of Rb-87 was found to be T-1/2 = 4.967(32) x 10(10) y. (C) 2003 Elsevier Ltd. All rights reserved.
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页码:377 / 382
页数:6
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