Particle-hole symmetry, F -spin, and r -process parameters

Journal Article · Tue Oct 01 00:00:00 EDT 1991 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.44.1655· OSTI ID:5218371

Davis, E D; Diallo, A F; Barrett, B R; Balantekin, A B ^[1]

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1. Department of Physics, University of Arizona, Tucson, Arizona (USA) Max-Planck-Institut fuer Kernphysik, Postfach 103980, W-6900 Heidelberg 1 (Germany) Department of Physics, University of Wisconsin, Madison, Wisconsin (USA)

We exploit approximate symmetry under particle-hole conjugation and the systematics associated with a classification scheme (inspired by the neutron-proton interacting boson model) to obtain estimates of binding energies and low-lying excitation energies for even-even {ital r}-process nuclei drawn from the major proton and neutron shells, 50{lt}{ital Z}{lt}82 and 82{lt}{ital N}{lt}126. We anticipate that our simple formalism for binding energies, depending on only six parameters, has an accuracy of {similar to}0.8 MeV. We argue that the particular dual particle-hole conjugation symmetry required to relate excitation energies in neutron-rich nuclei to the known excitation energies of the corresponding conjugated nuclei holds to within 10% or so.

• OSTI ID: 5218371
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Vol. 44:4; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
NEUTRON-RICH ISOTOPES
BINDING ENERGY
EVEN-EVEN NUCLEI
INTERACTING BOSON MODEL
PARTICLE-HOLE MODEL
R PROCESS
ENERGY
ISOTOPES
MATHEMATICAL MODELS
NUCLEAR MODELS
NUCLEI
RADIOISOTOPES
SHELL MODELS
STAR EVOLUTION
653001* - Nuclear Theory- Nuclear Structure
Moments
Spin
& Models