Inversekinematics proton scattering from ^{S},44_{42}, ^{P},43_{41}, and the collapse of the N =28 major shell closure
Abstract
Excited states of the neutronrich isotopes ^{S},44_{42} and ^{P},43_{41} have been studied via inversekinematics proton scattering from a liquid hydrogen target, using the GRETINA γ ray tracking array to extract inelasticscattering cross sections. Deformation lengths of the 2_{1}^{+} excitations in ^{S},44_{42} have been determined and, when combined with deformation lengths determined with electromagnetic probes, yield the ratio of neutrontoproton matrix elements M_{n}/M_{p} for the 2_{1}^{+} excitations in these nuclei. The present results for ^{P},43_{41}(p ,p^{'}) are used to compare two shellmodel interactions, SDPFU and SDPFMU. As in a recent study of ^{42}Si, the present results on ^{P},43_{41} favor the SDPFMU interaction.
 Publication:

Physical Review C
 Pub Date:
 October 2019
 DOI:
 10.1103/PhysRevC.100.044312
 arXiv:
 arXiv:1910.07986
 Bibcode:
 2019PhRvC.100d4312R
 Keywords:

 Nuclear Experiment
 EPrint:
 11 pages, 14 figures