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arXiv · 1211.3717

Two-proton removal from $^{44}$S and the structure of $^{42}$Si

J. A. Tostevin·B. A. Brown·E. C. Simpson
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Abstract

Newly-published $^{42}$Si gamma-ray spectra and a final-state-inclusive $^{42}$Si production cross section value, obtained in a higher-statistics intermediate-energy two-proton removal experiment from $^{44}$S, are considered in terms of the final-state-exclusive cross sections computed using proposed shell-model effective interactions for nuclei near N=28. Specifically, we give cross section predictions when using the two nucleon amplitudes of the two-proton overlaps $<^{42}$Si$ (J^\pi)\,|\,^{44}$S$>$ computed using the newly-proposed {\sc sdpf-mu} shell-model Hamiltonian. We show that these partial cross sections or their longitudinal momentum distributions should enable a less-tentative interpretation of the measured gamma-ray spectra and provide a more quantitative assessment of proposed shell-model Hamiltonians in this interesting and challenging region of the chart of nuclides.

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J. A. Tostevin, B. A. Brown, E. C. Simpson. 2012-11-15. Two-proton removal from $^{44}$S and the structure of $^{42}$Si. https://doi.org/10.1103/physrevc.87.027601

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