Reaction cross section of the two-neutron halo nucleus $^{22}C$ At 235 MeV/nucleon

Yasuhiro Togano (1) , T. Nakamura (1) , Y. Kondo (1) , N. Kobayashi (1) , R. Tanaka (1) , R. Minakata (1) , S. Ogoshi (1) , S. Nishi (1) , D. Kanno (1) , T. Nakashima (1) , J. Tsubota (1) , A.T. Saito (1) , J.A. Tostevin (2) , N.A. Orr (3) , J. Gibelin (3) , F. Delaunay (3) , F.M. Marques (3) , N.L. Achouri (3) , S. Leblond (3) , Q. Deshayes (3) , K. Yoneda (4) , T. Motobayashi (4) , H. Otsu (4) , T. Isobe (4) , H. Baba (4) , H. Sato (4) , Y. Shimizu (4) , T. Kubo (4) , N. Inabe (4) , N. Fukuda (4) , D. Kameda (4) , H. Suzuki (4) , H. Takeda (4) , J.H. Lee (4) , P. Doornenbal (4) , S. Takeuchi (4) , T. Kobayashi (5) , K. Takahashi (5) , K. Muto (5) , T. Murakami (6) , N. Nakatsuka (6) , Y. Satou (7) , S. Kim (7) , J. Hwang (7) , T. Aumann (8) , D. Murai (9) , A. Navin (10) , A.G. Tuff (11) , M. Vandebrouck (12)

1 Department of Physics [Tokyo]
2 UNIS - University of Surrey
3 LPCC - Laboratoire de physique corpusculaire de Caen
4 RIKEN RNC - RIKEN Nishina Center for Accelerator-Based Science [Wako]
5 Tohoku University [Sendai]
6 Kyoto University
7 SNU - Seoul National University [Seoul]
8 Institut für Kernphysik [Darmstadt]
9 Rikkyo University [Tokyo]
10 GANIL - Grand Accélérateur National d'Ions Lourds
11 University of York [York, UK]
12 IPNO - Institut de Physique Nucléaire d'Orsay

The reaction cross section (σR) of the very neutron-rich carbon isotope 22C has been measured on a carbon target at 235 MeV/nucleon. A σR of 1.280 ± 0.023 b was obtained for 22C, significantly larger than those for the neighboring isotopes, supporting the halo character of 22C. A 22C root-mean-squared matter radius of 3.44±0.08 fm was deduced using a four-body Glauber reaction model. This value is smaller than an earlier estimate of 5.4±0.9 fm derived from a σR measurement on a hydrogen target at 40 MeV/nucleon.

Domaines: Physique Nucléaire Expérimentale [nucl-ex]

Yasuhiro Togano, T. Nakamura, Y. Kondo, N. Kobayashi, R. Tanaka, et al.. Reaction cross section of the two-neutron halo nucleus $^{22}C$ At 235 MeV/nucleon. 26th International Nuclear Physics Conference, Sep 2016, Adelaide, Australia. pp.054, ⟨10.22323/1.281.0054⟩. ⟨hal-01555076⟩