Abstract
In present work, we have calculated the hindrance factors of 182 even-even alpha emitters using Preston’s formulation of alpha decay probabilities and presented HFs systematics of 1 - and 3 - states in reflection asymmetric even-even quadruple-octupole deformed nuclides (A~216-230). The calculated HFs of both 1 - and 3 - states decrease with reduction in neutron number and this decrease is attributed to onset of intrinsic reflection asymmetry. There is a trend reversal for 1 - states at N=132 ( 218 Ra) and N=134 ( 220 Rn), which might be a possible indication of departure from static octupole deformation. Similarly, HFs systematics is discussed for 224-230 Th and 232-236 U isotopic chains along with 2 + states observed in daughter nuclei in N=132-146 isotonic chains.
Published Version
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