Title: Identification of low-lying proton-based intruder states in Pb189-193
Authors: Van de Vel, Karen
Andreyev, Andrei
Huyse, Marc
Van Duppen, Piet
Cocks, JFC
Dorvaux, O
Greenlees, PT
Helariutta, K
Jones, P
Julin, R
Juutinen, S
Kettunen, H
Kuusiniemi, P
Leino, M
Muikku, M
Nieminen, P
Eskola, K
Wyss, R #
Issue Date: Jun-2002
Publisher: American physical soc
Series Title: Physical Review C vol:65 issue:6
Article number: 064301
Abstract: Low-lying proton-based intruder states have been observed in the odd-mass isotopes Pb-189,Pb-191,Pb-193 in experiments at the RITU gas-filled recoil separator. The identification has been performed by observing the fine structure in the alpha decay of the parent Po-193,Po-195,Po-197 nuclei in prompt coincidence with conversion electrons and gamma rays in the daughter lead isotopes. Along with the literature data these results establish a systematics of intruder states in the odd-mass lead isotopes from Pb-197 down to Pb-185. Interpretation of these states involves the coupling of the 1i(13/2) or 3p(3/2) odd neutron to the 0(+) state in the oblate minimum in the even-mass lead core. Conversion coefficients have been determined for some of the transitions, revealing mixing between the coexisting states. The experimental results are compared to potential energy surface calculations.
ISSN: 0556-2813
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Nuclear and Radiation Physics Section
# (joint) last author

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