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|Title:||Systematics of alpha decay hindrance factors in doubly-even nuclei|
Jain, A K
|Keywords:||Even-even alpha emitters;Hindrance factors;Reflection asymmetry|
|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 (218Ra) and N=134 (220Rn), which might be a possible indication of departure from static octupole deformation. Similarly, HFs systematics is discussed for 224-230Th and 232-236U isotopic chains along with 2+ states observed in daughter nuclei in N=132-146 isotonic chains.|
|ISSN:||0975-0959 (Online); 0301-1208 (Print)|
|Appears in Collections:||IJPAP Vol.58(04) [April 2020]|
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