Further examination of prolate-shape dominance in nuclear deformation

Journal Article · Sun Mar 15 04:00:00 EDT 2009 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.79.034317· OSTI ID:21199615

Hamamoto, Ikuko ^[1]; Mottelson, Ben R ^[2]

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1. Division of Mathematical Physics, Lund Institute of Technology at the University of Lund, Lund (Sweden)
2. Niels Bohr Institute, Blegdamsvej 17, Copenhagen null-set , DK-2100 (Denmark)

The observed almost complete dominance of prolate over oblate deformations in the ground states of deformed even-even nuclei is related to the splitting of high l''surface'' orbits in the Nilsson diagram: on the oblate side the occurrence of numerous strongly avoided crossings which reduce the fanning out of the low {lambda} orbits, while on the prolate side the same interactions increase the fanning out. It is further demonstrated that the prolate dominance is rather special for the restricted particle number of available nuclei and is not generic for finite systems with mean-field potentials resembling those in atomic nuclei.

• OSTI ID: 21199615
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 3 Vol. 79; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
DEFORMED NUCLEI
EVEN-EVEN NUCLEI
GROUND STATES
INTERACTIONS
MEAN-FIELD THEORY
NUCLEAR DEFORMATION
ORBITS
PARTICLES
SURFACES