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Title: Systematics of alpha decay hindrance factors in doubly-even nuclei
Authors: Kumar, Sushil
Singh, Sukhjeet
Singh, Balraj
Jain, A K
Keywords: Even-even alpha emitters;Hindrance factors;Reflection asymmetry
Issue Date: Apr-2020
Publisher: NISCAIR-CSIR, India
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.
Page(s): 304-307
ISSN: 0975-0959 (Online); 0301-1208 (Print)
Appears in Collections:IJPAP Vol.58(04) [April 2020]

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