62Ni的恒星(n,gamma)截面
核实验
2009-11-10 v3
摘要
62Ni(n,gamma)63Ni(t_1/2=100+-2年)反应在慢中子俘获(s-)核合成过程的流路径控制中起着重要作用。我们首次测量了该反应在准麦克斯韦型(kT = 25 keV)中子通量下的总截面。测量通过快中子活化结合加速器质谱法进行，以直接检测63Ni产物核。实验值28.4+-2.8 mb与最近的理论估计相当一致，影响了62Ni本身的计算净产额以及大质量恒星中弱s过程产生的62<A<90核素的整个分布。
引用
@article{arxiv.nucl-ex/0406009,
title = {The stellar (n,gamma) cross section of 62Ni},
author = {H. Nassar and M. Paul and I. Ahmad and D. Berkovits and M. Bettan and P. Collon and S. Dababneh and S. Ghelberg and J. P. Greene and A. Heger and M. Heil and D. J. Henderson and C. L. Jiang and F. Kaeppeler and H. Koivisto and S. O'Brien and R. C. Pardo and N. Patronis and T. Pennington and R. Plag and K. E. Rehm and R. Reifarth and R. Scott and S. Sinha and X. Tang and R. Vondrasek},
journal= {arXiv preprint arXiv:nucl-ex/0406009},
year = {2009}
}
备注
4 pages, 3 figures, revised paper, published PRL 94, 092504 (2005)