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

页码：339 / 344

页数：6

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