New approach for alpha-decay calculations of deformed nuclei

Journal Article · Tue Jun 15 04:00:00 EDT 2010 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.81.064318· OSTI ID:21388593

Dongdong, Ni ^[1]; Zhongzhou, Ren ^[1]

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1. Department of Physics, Nanjing University, Nanjing 210093 (China)

We present a new theoretical approach to evaluate alpha-decay properties of deformed nuclei, namely the multichannel cluster model (MCCM). The deformed alpha-nucleus potential is taken into full account, and the coupled-channel Schroedinger equation with outgoing wave boundary conditions is employed for quasibound states. Systematic calculations are carried out for well-deformed even-even nuclei with Z>=98 and isospin dependence of nuclear potentials is included in the calculations. Fine structure observed in alpha decay is well described by the four-channel microscopic calculation, which is performed for the first time in alpha-decay studies. The good agreement between experiment and theory is achieved for both total alpha-decay half-lives and branching ratios to the ground-state rotational band of daughter nuclei. Predictions on the branching ratios to high-spin daughter states are presented for superheavy nuclei, which may be important to interpret future observations.

• OSTI ID: 21388593
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 6 Vol. 81; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA DECAY
ANGULAR MOMENTUM
BOUNDARY CONDITIONS
BRANCHING RATIO
CLUSTER MODEL
COUPLED CHANNEL THEORY
DECAY
DEFORMED NUCLEI
DIFFERENTIAL EQUATIONS
DIMENSIONLESS NUMBERS
ELEMENTS
ENERGY LEVELS
EQUATIONS
EVEN-EVEN NUCLEI
EXCITED STATES
FINE STRUCTURE
FORECASTING
GROUND STATES
HALF-LIFE
HEAVY NUCLEI
ISOSPIN
MATHEMATICAL MODELS
NUCLEAR DECAY
NUCLEAR MODELS
NUCLEAR POTENTIAL
NUCLEI
PARTIAL DIFFERENTIAL EQUATIONS
PARTICLE PROPERTIES
POTENTIALS
QUASIBOUND STATE
ROTATIONAL STATES
SCHROEDINGER EQUATION
SPIN
TRANSACTINIDE ELEMENTS
TRANSPLUTONIUM ELEMENTS
TRANSURANIUM ELEMENTS
WAVE EQUATIONS