학술논문
Interaction cross section study of the two-neutron halo nucleus 22C
Document Type
article
Author
Y. Togano; T. Nakamura; Y. Kondo; J.A. Tostevin; A.T. Saito; J. Gibelin; N.A. Orr; N.L. Achouri; T. Aumann; H. Baba; F. Delaunay; P. Doornenbal; N. Fukuda; J.W. Hwang; N. Inabe; T. Isobe; D. Kameda; D. Kanno; S. Kim; N. Kobayashi; T. Kobayashi; T. Kubo; S. Leblond; J. Lee; F.M. Marqués; R. Minakata; T. Motobayashi; D. Murai; T. Murakami; K. Muto; T. Nakashima; N. Nakatsuka; A. Navin; S. Nishi; S. Ogoshi; H. Otsu; H. Sato; Y. Satou; Y. Shimizu; H. Suzuki; K. Takahashi; H. Takeda; S. Takeuchi; R. Tanaka; A.G. Tuff; M. Vandebrouck; K. Yoneda
Source
Physics Letters B, Vol 761, Iss C, Pp 412-418 (2016)
Subject
Language
English
ISSN
0370-2693
1873-2445
1873-2445
Abstract
The interaction cross sections (σI) of the very neutron-rich carbon isotopes 19C, 20C and 22C 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 22C, significantly larger than for 19,20C, 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 σI measurement 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.