One- and two-neutron removal reactions from 19,20 C with a proton target

A. Ozawa,1 Y. Hashizume,1 Y. Aoki,2 K. Tanaka,2 T. Aiba,3 N. Aoi,2 H. Baba,2 B. A. Brown,4 M. Fukuda,5 K. Inafuku,6 N. Iwasa,6 T. Izumikawa,7 K. Kobayashi,8 M. Komuro,8 Y. Kondo,9 T. Kubo,2 M. Kurokawa,2 T. Matsuyama,3 S. Michimasa,10 T. Motobayashi,2 T. Nakabayashi,9 S. Nakajima,8 T. Nakamura,9 T. Ohtsubo,3 H. Sakurai,2 R. Shinoda,8 M. Shinohara,9 H. Suzuki,2 T. Suzuki,8 M. Takechi,2 E. Takeshita,2 S. Takeuchi,2 Y. Togano,11 K. Yamada,2 T. Yamaguchi,8 T. Yasuno,1 and M. Yoshitake8 1Institute of Physics, University of Tsukuba, Ibaraki 305-8577, Japan 2RIKEN Nishina-Center, Saitama 351-0198, Japan 3Department of Physics, Niigata University, Niigata 950-2181, Japan 4Department of Physics and Astronomy, and National Superconducting Cyclotron Laboratory, Michigan State University, Michigan 48824-1321, USA 5Department of Physics, Osaka University, Osaka 560-0043, Japan 6Department of Physics, Tohoku University, Miyagi 980-8578, Japan 7Radioisotope Center, Niigata University, Niigata 951-8510, Japan 8Department of Physics, Saitama University, Saitama 338-8570, Japan 9Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551, Japan 10Center of Nuclear Study, University of Tokyo, Saitama 351-0198, Japan 11Department of Physics, Rikkyo University, Tokyo 171-8501, Japan (Received 11 June 2011; revised manuscript received 21 November 2011; published 15 December 2011)