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Title: Quadrupole-moments of high-spin isomers in fr-213, fr-212, and fr-211
Authors: Hardeman, F ×
Neyens, Gerda
Scheveneels, G
Nouwen, R
Sheeren, G
Vandenbergh, M
Coussement, Romain
Byrne, Ap
Musseler, R
Hubel, H
Baldsiefen, G #
Issue Date: Feb-1991
Publisher: American physical soc
Series Title: Physical Review C vol:43 issue:2 pages:514-520
Abstract: The level mixing spectroscopy method has been applied to measure the static quadrupole moments of six isomeric states in Fr-213, Fr-212, and Fr-211 (Z = 87). For isomers with the proton configuration pi-h9(4)/2i13/2 a large increase of the quadrupole moment was observed with the removal of neutrons from the closed N = 126 core: Q(29/2+,Fr-213) = -70(7) e fm2, Q(15-,Fr-212) = -80(12) e fm2, and Q(29/2+,Fr-211) = -107(18) e fm2. Quadrupole moments for very high spin states were also measured: Q(65/2-,Fr-213) = -219(53) e fm2, Q(27-,Fr-212) = -152(31) e fm2, and Q(45/2-,Fr-211) = -198(56) e fm2. The observed values are in good agreement with shell-model calculations, but are lower than that predicted using the deformed-independent particle model. The implantation behavior of Fr in a Tl host is also discussed.
URI: 
ISSN: 0556-2813
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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