Observation of a large reaction cross section in the drip-line nucleus C22

K. Tanaka, T. Yamaguchi, T. Suzuki, T. Ohtsubo, M. Fukuda, D. Nishimura, M. Takechi, K. Ogata, A. Ozawa, T. Izumikawa, T. Aiba, N. Aoi, H. Baba, Y. Hashizume, K. Inafuku, N. Iwasa, K. Kobayashi, M. Komuro, Y. Kondo, T. KuboM. Kurokawa, T. Matsuyama, S. Michimasa, T. Motobayashi, T. Nakabayashi, S. Nakajima, T. Nakamura, H. Sakurai, R. Shinoda, M. Shinohara, H. Suzuki, E. Takeshita, S. Takeuchi, Y. Togano, K. Yamada, T. Yasuno, M. Yoshitake

研究成果: Article査読

186 被引用数 (Scopus)

抄録

Reaction cross sections (σR) for C19, C20 and the drip-line nucleus C22 on a liquid hydrogen target have been measured at around 40AMeV by a transmission method. A large enhancement of σR for C22 compared to those for neighboring C isotopes was observed. Using a finite-range Glauber calculation under an optical-limit approximation the rms matter radius of C22 was deduced to be 5.4±0.9fm. It does not follow the systematic behavior of radii in carbon isotopes with N≤14, suggesting a neutron halo. It was found by an analysis based on a few-body Glauber calculation that the two-valence neutrons in C22 preferentially occupy the 1s1/2 orbital.

本文言語English
論文番号062701
ジャーナルPhysical review letters
104
6
DOI
出版ステータスPublished - 2010 2 8

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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