Interaction cross section study of the two-neutron halo nucleus 22C
Interaction cross section study of the two-neutron halo nucleus 22C
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DOI：
10.1016/j.physletb.2016.08.062
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发表时间：
2016-10
影响因子：
4.4
通讯作者：
Y. Togano;Takashi Nakamura;Y. Kondo;J. Tostevin;A. Saito;J. Gibelin;N. Orr;N. Achouri;T. Aumann;H. Baba;F. Delaunay;P. Doornenbal;N. Fukuda;J. Hwang;N. Inabe;T. Isobe;D. Kameda;D. Kanno;S. Kim;N. Kobayashi;Toshio Kobayashi;T. Kubo;S. Leblond;June-Hee 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. Tuff;M. Vandebrouck;K. Yoneda
中科院分区：
文献类型：
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作者：
Y. Togano;Takashi Nakamura;Y. Kondo;J. Tostevin;A. Saito;J. Gibelin;N. Orr;N. Achouri;T. Aumann;H. Baba;F. Delaunay;P. Doornenbal;N. Fukuda;J. Hwang;N. Inabe;T. Isobe;D. Kameda;D. Kanno;S. Kim;N. Kobayashi;Toshio Kobayashi;T. Kubo;S. Leblond;June-Hee 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. Tuff;M. Vandebrouck;K. Yoneda
在307、280和235 MeV/核子的能量下，测量了极丰中子碳同位素19 C、20 C和22 C在碳靶上的相互作用截面（σ I）。22 C的σ I为1.280±0.023 B，显著大于19、20 C，支持22 C的晕特征。用四体Glauber反应模型推导出22 C的均方根物质半径为3.44±0.08 fm。这个值小于早先从40 MeV/核子氢靶上的σ I测量得出的估计值（5.4±0.9 fm）。这些新的、更高精度的σ I数据为评估描述弱束缚核的理论的一致性提供了更强的约束。
The interaction cross sections (σ I) 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 σ I 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 σ I measurement on a hydrogen target at 40 MeV/nucleon. These new, higher-precision σ I data provide stronger constraints for assessing the consistency of theories describing weakly bound nuclei.