3He(α,γ)7Be cross section in a wide energy range

被引：0

作者：

Szucs, Tamas ^{[1
]}

Gyurky, Gyorgy ^{[1
]}

Halasz, Zoltan ^{[1
]}

Kiss, Gabor Gy. ^{[1
]}

Fulop, Zsolt ^{[1
]}

机构：

[1] Inst Nucl Res MTA Atomki, Debrecen, Hungary

来源：

NUCLEAR PHYSICS IN ASTROPHYSICS VIII (NPA8 2017) | 2017年 / 165卷

关键词：

D O I：

10.1051/epjconf/201716501049

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The reaction rate of the He-3(alpha,gamma)Be-7 reaction is important both in the Big Bang Nucleosynthesis (BBN) and in the Solar hydrogen burning. There have been a lot of experimental and theoretical efforts to determine this reaction rate with high precision. Some long standing issues have been solved by the more precise investigations, like the different S(0) values predicted by the activation and in-beam measurement. However, the recent, more detailed astrophysical model predictions require the reaction rate with even higher precision to unravel new issues like the Solar composition. One way to increase the precision is to provide a comprehensive dataset in a wide energy range, extending the experimental cross section database of this reaction. This paper presents a new cross section measurement between E-cm = 2.5 - 4.4 MeV, in an energy range which extends above the Be-7 proton separation threshold.

引用

页数：4