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arXiv · 1710.04051

Role of isospin and its conservation in neutron-rich fission fragments

Swati Garg·Bhoomika Maheshwari·Ashok Kumar Jain
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Abstract

Following upon our earlier paper [1] containing some initial results, we present detailed discussion and complete results in this paper, which provide the first direct evidence for the validity of isospin as a nearly good quantum number in neutron-rich systems. The evidence comes from the reproduction of the general features of the partition-wise relative yields of neutron-rich fission fragments produced in two heavy-ion induced fusion fission reactions, namely $^{208}$Pb ($^{18}$O, f) and $^{238}$U ($^{18}$O, f), by using the concept of isospin conservation. To fix the isospin values and use the isospin algebra, we invoke what we term as Kelson's conjectures. We present a consistent scheme for isospin assignments based on these considerations. Our calculated results confirm that isospin behaves as an approximately good quantum number in neutron-rich systems, in this case, the fission fragments.

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Swati Garg, Bhoomika Maheshwari, Ashok Kumar Jain. 2018-06-26. Role of isospin and its conservation in neutron-rich fission fragments. https://doi.org/10.1088/1402-4896%2Faae729

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