K. P. Santhosh, Jayesh George Joseph, B. Priyanka
Systematic study on {\alpha}-decay fine structure is presented for the first
time in the case of odd-even nuclei in the range 83 \leq Z \leq 101. The model
used for the study is the recently proposed Coulomb and proximity potential
model for deformed nuclei (CPPMDN), which employs deformed Coulomb potential,
deformed two term proximity potential and centrifugal potential. The computed
partial half lives, total half lives and branching ratios are compared with
experimental data and are in good agreement. The standard deviation of partial
half-life is 1.08 and that for branching ratio is 1.21. Our formalism is also
successful in predicting angular momentum hindered and structure hindered
transitions. The present study reveals that CPPMDN is a unified theory which is
successful in explaining alpha decay from ground and isomeric state; and alpha
fine structure of even-even, even-odd and odd-even nuclei. Our study relights
that the differences in the parent and daughter surfaces or the changes in the
deformation parameters as well as the shell structure of the parent and
daughter nuclei, influences the alpha decay probability.
View original:
http://arxiv.org/abs/1202.0906
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