{alpha} decay and shape coexistence in the {alpha}-rotor model

Journal Article · Mon Sep 01 04:00:00 EDT 1997 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.56.1389· OSTI ID:542308

Richards, J D; Bingham, C R; Nazarewicz, W; Wauters, J ^[1]; Berggren, T ^[2]; Berggren, T ^[3]; Bingham, C R; Nazarewicz, W ^[4]; Nazarewicz, W ^[5]

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1. Department of Physics Astronomy, University of Tennessee, Knoxville, Tennessee 37996 (United States)
2. Department of Mathematical Physics, Lund Institute of Technology, P.O. Box 118, S-22100 Lund (Sweden)
3. Joint Institute of Heavy Ion Research, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37831 (United States)
4. Physics Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37831 (United States)
5. Institute of Theoretical Physics, Warsaw University, Hoza 69, PL-00681, Warsaw (Poland)

The particle-plus-rotor model was employed to study the fine structure seen in the {alpha} decay of even-even neutron-deficient nuclei in the Hg-Po region. The configuration mixing resulting from the shape coexistence between well-deformed prolate bands and spherical (or quasirotational oblate) structures in the daughter nuclei was considered. Experimental {alpha}-decay branching ratios are reproduced within one order of magnitude, except for the case of {sup 180}Hg, where the daughter nucleus {sup 176}Pt is expected to be triaxial in its ground state. The effect of configuration mixing on the relative intensities is discussed in detail, together with the sensitivity of results to the choice of the {alpha}-nucleus optical model parameters. {copyright} {ital 1997} {ital The American Physical Society}

• Research Organization: Oak Ridge National Laboratory
• DOE Contract Number: AC05-96OR22464; FG02-96ER40963; FG05-87ER40361
• OSTI ID: 542308
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 3 Vol. 56; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ALPHA DECAY
BRANCHING RATIO
DEFORMED NUCLEI
EVEN-EVEN NUCLEI
FINE STRUCTURE
GROUND STATES
MERCURY 180
MIXING
NEUTRON-DEFICIENT ISOTOPES
OPTICAL MODELS
PLATINUM 176
POLONIUM ISOTOPES
SENSITIVITY
SHAPE