Title: Hindered (Delta l=0) alpha decay and shape staggering in Po-191
Authors: Andreyev, Andrei ×
Huyse, Marc
Van Duppen, Piet
Cocks, JFC
Helariutta, K
Kettunen, H
Kuusiniemi, P
Leino, M
Trzaska, WH
Eskola, K
Wyss, R #
Issue Date: Mar-1999
Publisher: American physical soc
Series Title: Physical Review Letters vol:82 issue:9 pages:1819-1822
Abstract: 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].
ISSN: 0031-9007
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Nuclear and Radiation Physics Section
× corresponding author
# (joint) last author

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