Neutron halo in 11Be studied via reaction cross sections
Neutron halo in 11Be studied via reaction cross sections
复制标题
DOI：
10.1016/0370-2693(91)91587-l
复制
发表时间：
1991-10
影响因子：
4.4
通讯作者：
M. Fukuda;T. Ichihara;N. Inabe;T. Kubo;H. Kumagai;T. Nakagawa;Y. Yano;I. Tanihata;M. Adachi-M.-Ad
中科院分区：
文献类型：
--
作者：
M. Fukuda;T. Ichihara;N. Inabe;T. Kubo;H. Kumagai;T. Nakagawa;Y. Yano;I. Tanihata;M. Adachi-M.-Ad
用透射法测量了33 A MeV ~（11）Be束与C、Al靶反应的反应截面（σR）和碎裂截面（σF）。11 Be +12 C的σ R为1.56±0.03 B，11 Be +27 Al的σ R为2.27±0.05 B。与稳定核的系统学相比，这些值是非常大的。11Be → 10 Be通道也观察到较大的σ F。模型计算使用目前和790 A MeV的数据确认长中子尾（中子晕）的11 Be密度分布。
Reaction cross sections (σR) and fragmentation cross sections (σF) of reactions of a11Be beam on C, Al targets were measured by a transmission method at 33A MeV. The σRhave been determined to be 1.56±0.03 b for11Be +12C , and 2.27±0.05 b for11Be +27Al . These values are extremely large compared with the systematics of stable nuclei. A large σFhas also been observed for the11Be→10Be channel. Model calculations using present and 790A MeV data confirm the long neutron tail (neutron halo) in the11Be density distribution.