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Title: Interaction cross section study of the two-neutron halo nucleus 22C
Authors: Togano, Y.
Nakamura, T.
Kondo, Y.
Tostevin, J.A.
Saito, A.T.
Gibelin, J.
Orr, N.A.
Achouri, N.L.
Aumann, T.
Baba, H.
Delaunay, F.
Doornenbal, P.
Fukuda, N.
Hwang, J.W.
Inabe, N.
Isobe, T.
Kameda, D.
Kanno, D.
Kim, S.
Kobayashi, N.
Kobayashi, T.
Kubo, T.
Leblond, S.
Lee, J.
Marqués, F.M.
Minakata, R.
Motobayashi, T.
Murai, D.
Murakami, T.
Muto, K.
Nakashima, T.
Nakatsuka, N.
Navin, A.
Nishi, S.
Ogoshi, S.
Otsu, H.
Sato, H.
Satou, Y.
Shimizu, Y.
Suzuki, H.
Takahashi, K.
Takeda, H.
Takeuchi, S.
Tanaka, R.
Tuff, A.G.
Vandebrouck, M.
Yoneda, K.
Keywords: Interaction cross section
Matter radius
Two-neutron halo nucleus [22]C
Issue Date: 10-Oct-2016
Publisher: Elsevier BV
Journal title: Physics Letters B
Volume: 761
Start page: 412
End page: 418
Abstract: The interaction cross sections (σI) of the very neutron-rich carbon isotopes [19]C, [20]C and [22]C have been measured on a carbon target at 307, 280, and 235 MeV/nucleon, respectively. A σI of 1.280±0.023 b was obtained for [22]C, significantly larger than for [19, 20]C, supporting the halo character of [22]C. A [22]C 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 σImeasurement on a hydrogen target at 40 MeV/nucleon. These new, higher-precision σI data provide stronger constraints for assessing the consistency of theories describing weakly bound nuclei.
Rights: © 2016 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license ( Funded by SCOAP3.
DOI(Published Version): 10.1016/j.physletb.2016.08.062
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