In-beam $\gamma$-ray spectroscopy of negative-parity states of ${}^{37}$K populated in dissipative reactions

Abstract

In-beam $\gamma$-ray spectroscopy was used to study excited states of the neutron-deficient nucleus ${}^{37}$K populated in fast-beam inelastic-scattering and proton-removal reactions at high-momentum loss. New $\gamma$-ray transitions and $\gamma \gamma$ coincidence relationships were established using the $\gamma$-ray tracking array GRETINA. The extension of the level scheme up to the first $(13/2^{-})$ state highlights the potential of this recently demonstrated population pathway for studies of isospin symmetry involving mirror-energy differences. The nature of the newly identified states is discussed in comparison to shell-model calculations with the FSU cross-shell effective interaction. The calculated occupation numbers of individual orbitals are shown to offer a consistent explanation of the measured mirror-energy differences between ${}^{37}$K and ${}^{37}$Ar.

8 pages, 6 figures

References in corpus (7)

• Evolution of the N=20 and 28 Shell Gaps and 2-particle-2-hole states in the FSU Interaction
• The structure of ${}^{36}$Ca under the Coulomb magnifying glass
• On the inversion of isobaric-analogue states in nuclei
• Dissipative reactions with intermediate-energy beams -- a novel approach to populate complex-structure states in rare isotopes
• In-beam $\gamma$-ray spectroscopy at the proton dripline: ${}^{40}$Sc
• Exploiting dissipative reactions to perform in-beam $\gamma$-ray spectroscopy of the neutron-deficient isotopes \nuc{38,39}{Ca}
• Probing proton cross-shell excitations through the two-neutron removal from 38Ca

Cited by in corpus (1)

• Puzzling $B(E2;0^{+}\to 2^{+})$ strength in the proton dripline nucleus ${}^{36}$Ca