Overall normalization of the astrophysical S factor and the nuclear vertex constant for 7Be(p, gamma )8B reactions.
Overall normalization of the astrophysical S factor and the nuclear vertex constant for 7Be(p, gamma )8B reactions.
复制标题
DOI：
10.1103/physrevlett.73.2027
复制
发表时间：
1994-10
影响因子：
8.6
通讯作者：
H. M. Xu;C. Gagliardi;R. Tribble;A. Mukhamedzhanov;N. Timofeyuk
中科院分区：
文献类型：
--
作者：
H. M. Xu;C. Gagliardi;R. Tribble;A. Mukhamedzhanov;N. Timofeyuk
我们指出了核顶点常数(NVC)与天体物理[重要的S]因子的整体归一化之间的简单关系。使用[sup 8]Be[r箭头][sup 7]Be+[italp]的Nvc预测值，我们得到了[ital7]Be([italp]，[up8])[sup8]B反应的[ital7]Be[sub17](0)[约]17.6 eV[italb]，与Filippone的直接俘获测量推算的低值是一致的。和沃恩[ital et][ital al]。提出了利用质子转移反应间接测量天体物理因子的新可能性。
We point out a simple relation between the nuclear vertex constant (NVC) and the overall normalization of the astrophysical [ital S] factor. Using predicted values of the NVC for the virtual decay of [sup 8]B [r arrow][sup 7]Be+[ital p], we find [ital S][sub 17](0) [approx]17.6 eV [ital b] for [sup 7]Be ([ital p],[gamma])[sup 8]B reactions, consistent with the low values extrapolated from direct capture measurements by Filippone [ital et] [ital al]. and by Vaughn [ital et] [ital al]. New possibilities, using proton transfer reactions, to measure the astrophysical [ital S] factor indirectly are proposed.