Alpha-decay half-life of 221Fr in different environments

被引：34
|
作者：
Jeppesen, H. B. [1 ]
Byskov-Nielsen, J.
Wright, P.
Correia, J. G.
Fraile, L. M.
Fynbo, H. O. U.
Johnston, K.
Riisager, K.
机构：
[1] CERN, ISOLDE, PH Dept, CH-1211 Geneva 23, Switzerland
[2] Univ Aarhus, Inst Fys & Astron, DK-8000 Aarhus C, Denmark
[3] Chalmers Tekniska Hogskola, Fundamental Fys, S-41296 Gothenburg, Sweden
来源：
EUROPEAN PHYSICAL JOURNAL A | 2007年 / 32卷 / 01期
关键词：
D O I：
10.1140/epja/i2007-10011-9
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
A possible dependence of the alpha decay process on the solid-state environment of the decaying nucleus has been investigated by measuring the alpha-decay half-life of Fr-221 at room temperature in different materials (Au, W, Si and polyethylene). The change in half-life between the insulator Si and the metals Au/W is found to be 0.30(17)% / 0.42(21)%, respectivly. Furthermore an improved value of 4.79(2) min was found for the absolute half-life of Fr-221.
引用
收藏
页码：31 / 34
页数：4
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