The first spectroscopy of excited states in Ni52 (Tz=−2) and Co51 (Tz=−3/2) has been obtained using the highly selective two-neutron knockout reaction. Mirror energy differences between isobaric analogue states in these nuclei and their mirror partners are interpreted in terms of isospin nonconserving effects. A comparison between large-scale shell-model calculations and data provides the most compelling evidence to date that both electromagnetic and an additional isospin nonconserving interactions for J=2 couplings, of unknown origin, are required to obtain good agreement.
Mirror Energy Differences at Large Isospin Studied through Direct Two-Nucleon Knockout
LENZI, SILVIA MONICA;
2013
Abstract
The first spectroscopy of excited states in Ni52 (Tz=−2) and Co51 (Tz=−3/2) has been obtained using the highly selective two-neutron knockout reaction. Mirror energy differences between isobaric analogue states in these nuclei and their mirror partners are interpreted in terms of isospin nonconserving effects. A comparison between large-scale shell-model calculations and data provides the most compelling evidence to date that both electromagnetic and an additional isospin nonconserving interactions for J=2 couplings, of unknown origin, are required to obtain good agreement.File in questo prodotto:
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