COULOMB DISSOCIATION OF LI-11 AND BE-11 IN A DIRECT FRAGMENTATION MODEL

被引：49

作者：

SHYAM, R ^{[1
]}

BANERJEE, P ^{[1
]}

BAUR, G ^{[1
]}

机构：

[1] FORSCHUNGSZENTRUM JULICH, INST KERNPHYS, W-5170 JULICH 1, GERMANY

来源：

NUCLEAR PHYSICS A | 1992年 / 540卷 / 1-2期

关键词：

D O I：

10.1016/0375-9474(92)90208-2

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The Coulomb dissociation contribution to the two-neutron and one-neutron removal cross section of, respectively, Li-11 and Be-11 projectiles has been calculated in a direct fragmentation model. The model is formulated within the framework of the post form distorted-wave Born approximation. In this theory, the "post acceleration effect" of the Li-9 and Be-10 fragments in the final channel is accounted for properly. The Coulomb break-up can explain approximately upto 80% of the experimental 2n removal cross section of Li-11 for the Au-197 target at the incident energy of 29 MeV/A. The beam energy dependence of the calculated cross sections is in good agreement with the few experimental points presently available. The angular distributions of the Li-9 as well as of 2n system are found to be concentrated in the very forward angles.

引用

页码：341 / 352

页数：12

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