Proton radioactivity within a generalized liquid drop model

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

DOI:https://doi.org/10.1103/PHYSREVC.79.054330· OSTI ID:21286949

Dong, J M; Zhang, H F ^[1]; Royer, G ^[2]

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1. School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000 (China)
2. Laboratoire Subatech, UMR: IN2P3/CNRS-Universite-Ecole des Mines, Nantes 44 (France)

The proton radioactivity half-lives of spherical proton emitters are investigated theoretically. The potential barriers preventing the emission of protons are determined in the quasimolecular shape path within a generalized liquid drop model (GLDM) including the proximity effects between nuclei in a neck and the mass and charge asymmetry. The penetrability is calculated with the WKB approximation. The spectroscopic factor has been taken into account in half-life calculation, which is obtained by employing the relativistic mean field (RMF) theory combined with the BCS method with the force NL3. The half-lives within the GLDM are compared with the experimental data and other theoretical values. The GLDM works quite well for spherical proton emitters when the spectroscopic factors are considered, indicating the necessity of introducing the spectroscopic factor and the success of the GLDM for proton emission. Finally, we present two formulas for proton emission half-life calculation similar to the Viola-Seaborg formulas and Royer's formulas of {alpha} decay.

• OSTI ID: 21286949
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 5 Vol. 79; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA DECAY
ASYMMETRY
EMISSION
HALF-LIFE
LIQUID DROP MODEL
MASS
MEAN-FIELD THEORY
NUCLEI
PROTONS
RADIOACTIVITY
RELATIVISTIC RANGE
SIMULATION
SPECTROSCOPIC FACTORS
SPHERICAL CONFIGURATION
WKB APPROXIMATION