Reaction Cross Section Of The Two-neutron Halo Nucleus $^{22}C$ At 235 MeV/nucleon

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

1 LPCC - Laboratoire de physique corpusculaire de Caen
2 GANIL - Grand Accélérateur National d'Ions Lourds
3 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⟩