Systematic study of nuclear {beta} decay
- Department of Physics, Tokyo Institute of Technology, Oh-Okayama, Meguro, Tokyo 152 (Japan)
{beta}-decay properties of nuclei are studied in the framework of proton-neutron quasiparticle random-phase approximation with a schematic Gamow-Teller residual interaction. Particle-hole and particle-particle terms of the separable Gamow-Teller force are consistently included for both {beta}{sup +} and {beta}{sup {minus}} directions, and their strengths are fixed as smooth functions of mass number {ital A} of nuclei in such a way that the calculation reproduces observed {beta}-decay properties of nuclei. Using the fixed interaction strengths, {beta}-decay half-lives of nuclei up to {ital A}=150 are calculated, and generally good agreement with experiment is obtained. A schematic force which is relevant to the unique first-forbidden decay is also included in a similar way to the Gamow-Teller force, and its effects are studied. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 397693
- Journal Information:
- Physical Review, C, Journal Name: Physical Review, C Journal Issue: 6 Vol. 54; ISSN PRVCAN; ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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