Calculation of {alpha} preformation for nuclei near N=162 and N=184

Journal Article · Tue Dec 15 04:00:00 EST 2009 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.80.064325· OSTI ID:21296590

Zhang, G L; Le, X Y ^[1]; Zhang, H Q ^[2]

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1. School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191 (China)
2. China Institute of Atomic Energy, Beijing 102413 (China)

The {alpha} preformation factor and the penetration probability are carefully analyzed for heavy and superheavy even-even nuclei. The penetration probability of an {alpha} cluster in the parent nucleus is calculated within the WKB approximation, whereas the nuclear potential between an {alpha} cluster and the daughter nucleus is obtained in the frame of a double-folding model with a density-dependent nucleon-nucleon interaction, in which the zero-range exchange term is supplemented. The {alpha} preformation factors in different shell regions are compared. It is shown that shell effects play an important role in {alpha} preformation. The preformation factor can supply information on the nuclear structure, and the penetration probability mainly determines the {alpha}-decay half-life. The results indicate that the deformed-subshell region at N=162 is different from that at N=152, and Z=114 and N=184 may lie in the closed-shell region.

• OSTI ID: 21296590
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 6 Vol. 80; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA DECAY
COMPUTERIZED SIMULATION
EVEN-EVEN NUCLEI
FOLDING MODEL
HALF-LIFE
HEAVY NUCLEI
ION PAIRS
NUCLEAR POTENTIAL
NUCLEAR STRUCTURE
NUCLEON-NUCLEON INTERACTIONS
TRANSACTINIDE ELEMENTS
WKB APPROXIMATION