Multiple mechanisms in proton-induced nucleon removal at 100 MeV/nucleon

Pohl, T.*; Sun, Y. L.*; Obertelli, A.*; Lee, J.*; Gmez-Ramos, M.*; Ogata, Kazuyuki*; Yoshida, Kazuki   ; Cai, B. S.*; Yuan, C. X.*; Brown, B. A.*; Baba, Hidetada*; Beaumel, D.*; Corsi, A.*; Gao, J.*; Gibelin, J.*; Gillibert, A.*; Hahn, K. I.*; Isobe, Tadaaki*; Kim, D.*; Kondo, Yosuke*; Kobayashi, Toshio*; Kubota, Yuki*; Li, P.*; Liang, P*; Liu, H. N.*; Liu, J.*; Lokotko, T.*; Marqus, F. M.*; Matsuda, Yohei*; Motobayashi, Toru*; Nakamura, Takashi*; Orr, N. A.*; Otsu, Hideaki*; Panin, V.*; Park, S. Y.*; Sakaguchi, Satoshi*; Sasano, Masaki*; Sato, Hiromi*; Sakurai, Hiroyoshi*; Shimizu, Yohei*; Stefanescu, A. I.*; Stuhl, L.*; Suzuki, Daisuke*; Togano, Yasuhiro*; Tudor, D.*; Uesaka, Tomohiro*; Wang, H.*; Xu, X.*; Yang, Z. H.*; Yoneda, Kenichiro*; Zenihiro, Juzo*

We report on the first proton-induced single proton- and neutron-removal reactions from the neutron deficient O nucleus with large Fermi-surface asymmetry at 100 MeV/nucleon. 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.