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arXiv 0906.4041nucl-ex
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奇p同位素113 In:α诱导反应的测量

Odd p isotope 113In: Measurement of alpha-induced reactions

C. Yalçın, R. T. Güray, N. Özkan, S. Kutlu, Gy. Gyürky, J. Farkas, G. G. Kiss, Zs. Fülöp, A. Simon, E. Somorjai, T. Rauscher

摘要:

113 In是少数几个质子数为奇数的p核之一。用活化法测量了~(113)In(α,γ)~(117)Sb和~(113)In(α,n)~(116)Sb的反应截面,质心能量在8.66 ~ 13.64 MeV之间,接近天体物理相关能量范围。实验是在原子力加速器回旋加速器上进行的。用HPGe探测器对衰变γ射线进行离线探测,确定放射性活度。测量的截面和天体物理S因子的结果,并与统计模型计算使用三种不同的α +核电位进行比较。比较表明,在大多数网络计算这些反应中使用的标准速率太快,由于在低能量下的光学α势的能量依赖性。

英文摘要:

One of the few p nuclei with an odd number of protons is 113In. Reaction cross sections of 113In(alpha,gamma)117Sb and 113In(alpha,n)116Sb have been measured with the activation method at center-of-mass energies between 8.66 and 13.64 MeV, close to the astrophysically relevant energy range. The experiments were carried out at the cyclotron accelerator of ATOMKI. The activities were determined by off-line detection of the decay gamma rays with a HPGe detector. Measured cross sections and astrophysical S factor results are presented and compared with statistical model calculations using three different alpha+nucleus potentials. The comparison indicates that the standard rates used in the majority of network calculations for these reactions were too fast due to the energy dependence of the optical alpha potential at low energy.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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