Elsevier

Physics Letters B

Volume 775, 10 December 2017, Pages 190-195
Physics Letters B

Kinetic energy dependence of fission fragment isomeric ratios for spherical nuclei 132Sn

https://doi.org/10.1016/j.physletb.2017.10.067Get rights and content
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Abstract

Isomeric ratios are a powerful observable to investigate fission fragment total angular momenta. A recent experimental campaign achieved at the LOHENGRIN spectrometer, shows a kinetic energy dependence of μs isomeric ratios from fission fragments populated in neutron induced fission of 235U. For the first time, this dependence was measured for the isomeric ratio of the doubly magic 132Sn. A Bayesian assessment of the angular momentum distribution of 132Sn is proposed according to calculations performed with the FIFRELIN code and interpreted with spin generation models.

Keywords

Isomeric ratio
Mass spectrometer
Angular momentum distribution
Fission fragment

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