Abstract
Abstract
The empirical Royer formulas were readjusted with new set of coefficients using the latest experimental data and the recent evaluated
α
-decay half-lives over a wide range of 573 nuclei between 52
≤
Z
≤
118. The effects of the orbital angular momentum, isospin asymmetry, and parity have been examined in improving the adopted formulas. The modified formulas were tested for their accuracy by comparing with the recent experimental data and other theoretical calculations. The prediction of
α
-decay half-lives of several isotopes of the superheavy nuclei with
Z
=
120
−
126
,
which have not yet been experimentally synthesized, are presented and compared with other theoretical approaches. The behavior of
log
10
T
α
in relation to the neutron number variation is explored for about 40 isotopes of each element. Based on the minima found in
log
10
T
α
variation with neutron number, we found neutron stability at
N
=
184
,
190, 196, 200, 202, 204, 210, 216, 218, 220 and 228. The behavior of
log
10
T
α
with neutron variation for heavy and superheavy nuclei is almost the same as that found using more heavy and complicated calculations. The present method can be applied easily to study large number of nuclei.
Subject
Condensed Matter Physics,Mathematical Physics,Atomic and Molecular Physics, and Optics
Cited by
7 articles.
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