학술논문
Inverse-kinematics proton scattering from $^{42,44}$S, $^{41,43}$P and the collapse of the $N=28$ major shell closure
Document Type
Working Paper
Author
Riley, L. A.; Bazin, D.; Belarge, J.; Bender, P. C.; Brown, B. A.; Cottle, P. D.; Elman, B.; Gade, A.; Gregory, S. D.; Haldeman, E. B.; Kemper, K. W.; Klybor, B. R.; Liggett, M. A.; Lipschutz, S.; Longfellow, B.; Lunderberg, E.; Mijatovic, T.; Pereira, J.; Skiles, L. M.; Titus, R.; Volya, A.; Weisshaar, D.; Zamora, J. C.; Zegers, R. G. T.
Source
Phys. Rev. C 100, 044312 (2019)
Subject
Language
Abstract
Excited states of the neutron-rich isotopes $^{42,44}$S and $^{41,43}$P have been studied via inverse-kinematics proton scattering from a liquid hydrogen target, using the GRETINA $\gamma$-ray tracking array to extract inelastic scattering cross sections. Deformation lengths of the $2^+_1$ excitations in $^{42,44}$S have been determined and, when combined with deformation lengths determined with electromagnetic probes, yield the ratio of neutron-to-proton matrix elements $M_n/M_p$ for the $2^+_1$ excitations in these nuclei. The present results for $^{41,43}$P$(p,p')$ are used to compare two shell model interactions, SDPF-U and SDPF-MU. As in a recent study of $^{42}$Si, the present results on $^{41,43}$P favor the SDPF-MU interaction.
Comment: 11 pages, 14 figures
Comment: 11 pages, 14 figures