Lifetime measurements by delayed coincidences with and without a complete knowledge of the prompt curve. Application to levels in Ir-184 and Pt-185,Pt-187

被引：5

作者：

Oms, J ^{[1
]}

Abreu, MC ^{[1
]}

Bourgeois, C ^{[1
]}

Gil, FB ^{[1
]}

机构：

[1] UNIV LISBON,FAC CIENCIAS,DEPT FIS,P-1700 LISBON,PORTUGAL

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1996年 / 368卷 / 02期

关键词：

D O I：

10.1016/0168-9002(95)00764-4

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A method is described which enables one to deduce a range of possible values for the lifetime of a nuclear level when the delayed coincidence curve is experimentally given and the prompt curve is known only through some of its features. The method still applies when a prompt contribution is present. Experimental data in Ir-184 are analyzed, and yield T-1/2(293 keV) = 1.1(3) ns, T-1/2(70.7)< 180 ps. The method is also used to discuss results obtained with an experimental prompt curve in (185)p[T-1/2(201) = 728(20)ps] and (187)pt [T-1/2(260) = 163(6) ps, T-1/2(181) = 1.68(4) ns].

引用

页码：403 / 409

页数：7

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