Hindered (Δl=0) alpha decay and shape staggering in 191Po

被引：60
作者：
Andreyev, AN
Huyse, M
Van Duppen, P
Cocks, JFC
Helariutta, K
Kettunen, H
Kuusiniemi, P
Leino, M
Trzaska, WH
Eskola, K
Wyss, R
机构：
[1] Univ Louvain, Inst Kern & Stralingsfys, B-3001 Heverlee, Belgium
[2] Univ Jyvaskyla, Dept Phys, FIN-40351 Jyvaskyla, Finland
[3] Univ Helsinki, Dept Phys, FIN-00014 Helsinki, Finland
[4] Royal Inst Technol, Dept Phys, S-10405 Stockholm, Sweden
来源：
PHYSICAL REVIEW LETTERS | 1999年 / 82卷 / 09期
关键词：
D O I：
10.1103/PhysRevLett.82.1819
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Two alpha-decaying isomeric states were observed in Po-191 with E-alpha = 7334(10) keV and T-1/2 = 22(1) ms for Po-191g and E-alpha = 7378(10) keV and T-1/2 = 98(8) ms for Po-191m. Evidence was found for fine-structure decay to excited levels in the Pb-187 daughter nucleus. The tentative interpretation of these new levels involves the weak coupling of the odd neutron to an intruder pi-(2p-2h) deformed 0(+) state in the even-even core. The long half-life of the Po-191m (Delta l = 0) alpha decay points to a deformed 13/(2)+ isomeric state in Po-191. [S0031-9007(99)08527-0].
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收藏
页码：1819 / 1822
页数：4
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