56Cu的低能能级结构及其对rp过程的影响
核实验
2017-06-07 v1 高能天体物理现象
摘要
利用最先进的γ射线跟踪阵列GRETINA结合密歇根州立大学国家超导回旋加速器实验室的S800谱仪，通过束流γ射线谱学提取了丰质子核Cu的低能能级。Cu中的激发态作为Ni(p,)Cu反应的共振态，该反应是I型X射线暴中rp过程的一部分。为解决反应Q值现有的模糊性，采用了更具局部性的IMME质量拟合，得到~keV。我们推导了首个实验约束的Ni(p,)Cu热核反应率。我们发现，在此新反应速率下，对于典型的X射线暴条件，rp过程可经由Ni(p,)反应绕过Ni等待点，分支比高达约40%。我们还确定了在就Ni区域rp过程反应流得出最终结论之前需要解决的额外核物理不确定性。
引用
@article{arxiv.1704.07941,
title = {Low-lying level structure of $^{56}$Cu and its implications on the rp process},
author = {W-J. Ong and C. Langer and F. Montes and A. Aprahamian and D. W. Bardayan and D. Bazin and B. A. Brown and J. Browne and H. Crawford and R. Cyburt and E. B. Deleeuw and C. Domingo-Pardo and A. Gade and S. George and P. Hosmer and L. Keek and A. Kontos and I-Y. Lee and A. Lemasson and E. Lunderberg and Y. Maeda and M. Matos and Z. Meisel and S. Noji and F. M. Nunes and A. Nystrom and G. Perdikakis and J. Pereira and S. J. Quinn and F. Recchia and H. Schatz and M. Scott and K. Siegl and A. Simon and M. Smith and A. Spyrou and J. Stevens and S. R. Stroberg and D. Weisshaar and J. Wheeler and K. Wimmer and R. G. T. Zegers},
journal= {arXiv preprint arXiv:1704.07941},
year = {2017}
}
备注
8 pages, accepted for Phys. Rev. C