Pseudospin symmetry in the resonant states of nuclei

Journal Article · Tue Nov 01 04:00:00 EST 2005 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.72.054319· OSTI ID:20699124

Jianyou, Guo; Ruodong, Wang; Xiangzheng, Fang ^[1]

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1. School of Physics and Material Science, Anhui University, Hefei 230039 (China)

Pseudospin symmetry for the resonant states in {sup 208}Pb is investigated by solving the Dirac equation with Woods-Saxon vector and scalar potentials in combination with an analytic continuation in the coupling-constant method, where the influences of the coupling-constant interval and the Pade approximant order are analyzed, and the stable and convergent energies and widths are obtained. Pseudospin breaking is shown in correlation with the nuclear mean field shaped by the central depth {sigma}{sub 0}, a radius (range) R, and a diffusivity a, which play an important role in the splittings of energy and width. The energy-level crossings appear in several pseudospin partners of resonant states, where the decay time is found to be different for the pseudospin doublets even when their energies are fully degenerate.

• OSTI ID: 20699124
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 5 Vol. 72; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CORRELATIONS
COUPLING CONSTANTS
DIRAC EQUATION
ENERGY LEVELS
LEAD 208
MEAN-FIELD THEORY
NUCLEAR DECAY
QUANTUM FIELD THEORY
RESONANCE
SCALARS
SHELL MODELS
SPIN
SYMMETRY
WOODS-SAXON POTENTIAL