NEUTRON HALO IN BE-11 STUDIED VIA REACTION CROSS-SECTIONS

被引：245
|
作者：
FUKUDA, M
ICHIHARA, T
INABE, N
KUBO, T
KUMAGAI, H
NAKAGAWA, T
YANO, Y
TANIHATA, I
ADACHI, M
ASAHI, K
KOUGUCHI, M
ISHIHARA, M
SAGAWA, H
SHIMOURA, S
机构：
[1] RIKEN,WAKO,SAITAMA 35101,JAPAN
[2] TOKYO INST TECHNOL,DEPT APPL PHYS,TOKYO 152,JAPAN
[3] UNIV TOKYO,DEPT PHYS,BUNKYO KU,TOKYO 113,JAPAN
来源：
PHYSICS LETTERS B | 1991年 / 268卷 / 3-4期
关键词：
D O I：
10.1016/0370-2693(91)91587-L
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Reaction cross sections (sigma-R) and fragmentation cross sections (sigma-F) of reactions of a Be-11 beam on C, Al targets were measured by a transmission method at 33A MeV. The sigma-R have been determined to be 1.56 +/- 0.03 b for Be-11 + C-12, and 2.27 +/- 0.05 b for Be-11 + Al-27. These values are extremely large compared with the systematics of stable nuclei. A large sigma-F has also been observed for the Be-11 --> Be-10 channel. Model calculations using present and 790A MeV data confirm the long neutron tail (neutron halo) in the Be-11 density distribution.
引用
收藏
页码：339 / 344
页数：6
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