Octupole strength in the neutron-rich calcium isotopes

Abstract

Low-lying excited states of the neutron-rich calcium isotopes ${}^{48-52}$Ca have been studied via $\gamma$-ray spectroscopy following inverse-kinematics proton scattering on a liquid hydrogen target using the GRETINA $\gamma$-ray tracking array. The energies and strengths of the octupole states in these isotopes are remarkably constant, indicating that these states are dominated by proton excitations.

arXiv comment15 pages, 3 figures

References in corpus (2)

• Cross-shell excitation in two-proton knockout: Structure of ${}^{52}$Ca
• Inverse-kinematics proton scattering on ${}^{50}$Ca: Determining effective charges using complementary probes

Cited by in corpus (3)

• Neutron-rich calcium isotopes within realistic Gamow shell model calculations with continuum coupling
• Low-spin particle/hole-core excitations in ${}^{41,47,49}$Ca isotopes studied by cold-neutron capture reactions
• Spectroscopy of ${}^{54}$Ti and the systematic behavior of low energy octupole states in Ca and Ti isotopes