NUCLEAR-REACTION CROSS-SECTIONS OF O-16+O-16 OBTAINED BY GAMMA-RAY DETECTION

被引：27

作者：

CHENG, VKC ^{[1
]}

LITTLE, A ^{[1
]}

YUEN, HC ^{[1
]}

LAZARUS, SM ^{[1
]}

HANNA, SS ^{[1
]}

机构：

[1] STANFORD UNIV,DEPT PHYS,STANFORD,CA 94305

来源：

NUCLEAR PHYSICS A | 1979年 / 322卷 / 01期

基金：

美国国家科学基金会;

关键词：

Nuclear reactions;

D O I：

10.1016/0375-9474(79)90340-3

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 partial production cross sections for reaction residues produced by the fusion of 16O with 16O have been measured at Ec.m = 9-30 MeV by detecting the characteristic γ-rays with a Ge(Li) detector. The dominant products are 24Mg and 27A1 corresponding to 2α and αp emission from the compound nucleus, respectively. The total γ-producing cross sections σR were also derived by summing the partial cross sections after correction for the observed (average) γ-ray angular distributions. The trend in the total cross sections is very similar to the trends derived from an optical model or a statistical-evaporation model calculation. The partial production cross sections were compared with other experimental results at 11.9 MeV and 30 MeV and with the results of the statistical-model calculation. It is concluded that the treatment of angular momentum in the calculation is inadequate for describing the partial cross sections. Structure in the partial and total cross section excitation functions is observed with minima occurring at Ec.m. = 27, 24, 20, 17.5, and possibly 15 MeV. Some of this structure is well established by the statistical accuracy of the data and most, but perhaps not all of it, is correlated in the various channels. This structure is compared with that observed in another experiment and some of its implications are discussed. © 1979.

引用

页码：168 / 188

页数：21

共 52 条

[1] BE-8 PRODUCING REACTIONS IN C-12+C-12, O-16+O-16, AND SI-28+C-12 [J].