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Multiple Mechanisms in Proton-Induced Nucleon Removal at ∼100 MeV/Nucleon

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Multiple Mechanisms in Proton-Induced Nucleon Removal at ∼100 MeV/Nucleon
Pohl, T.; Sun, Y.L.; Obertelli, A.; Lee, J.; Gómez-Ramos, M.; Ogata, K.; Yoshida, K.; Cai, B.S.; Yuan, C.X.; Brown, B.A.; Baba, H.; Beaumel, D.; Corsi, A.; Gao, J.; Gibelin, J.; Gillibert, A.; Kevin Insik Hahn; Isobe, T.; Da Hee Kim; Kondo, Y.; Kobayashi, T.; Kubota, Y.; Li, P.; Liang, P.; Liu, H.N.; Liu, J.; Lokotko, T.; Marqués, F.M.; Matsuda, Y.; Motobayashi, T.; Nakamura, T.; Orr, N.A.; Otsu, H.; Panin, V.; Park, S.Y.; Sakaguchi, S.; Sasano, M.; Sato, H.; Sakurai, H.; Shimizu, Y.; Stefanescu, A.I.; Laszlo Stuhl; Suzuki, D.; Togano, Y.; Tudor, D.; Uesaka, T.; Wang, H.; Xu, X.; Yang, Z.H.; Yoneda, K.; Zenihiro, J.
Publication Date
Physical Review Letters, v.130, no.17
American Physical Society
We report on the first proton-induced single proton- and neutron-removal reactions from the neutron-deficient O14 nucleus with large Fermi-surface asymmetry Sn-Sp=18.6 MeV at ∼100 MeV/nucleon, a widely used energy regime for rare-isotope studies. The measured inclusive cross sections and parallel momentum distributions of the N13 and O13 residues are compared to the state-of-the-art reaction models, with nuclear structure inputs from many-body shell-model calculations. Our results provide the first quantitative contributions of multiple reaction mechanisms including the quasifree knockout, inelastic scattering, and nucleon transfer processes. It is shown that the inelastic scattering and nucleon transfer, usually neglected at such energy regime, contribute about 50% and 30% to the loosely bound proton and deeply bound neutron removal, respectively. These multiple reaction mechanisms should be considered in analyses of inclusive one-nucleon removal cross sections measured at intermediate energies for quantitative investigation of single-particle strengths and correlations in atomic nuclei. © 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
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Center for Exotic Nuclear Studies(희귀 핵 연구단) > 1. Journal Papers (저널논문)
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