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arXiv 0808.0800nucl-ex
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$^7$ Li+ $^{28}$ Si体系的亚势垒熔合激发

Sub-barrier fusion excitation for the system $^7$Li+$^{28}$Si

Mandira Sinha, H. Majumdar, P. Basu, Subinit Roy, R. Bhattacharya, M. Biswas, M. K. Pradhan, S. Kailas

摘要:

用特征$γ$射线方法首次测量了能量范围为$E_{lab}$ = 7- 11.5MeV的$^7$ Li + $^{28}$ Si系统的亚势垒熔合激发函数。结果表明,增强,以下的障碍,由约两个因素相比,一维屏障渗透(1D BPM)模型。引入与靶的旋转2 $^{+}$态(1.779MeV)的耦合稍微改善了拟合,但仍然保持约25-40%的增强。

英文摘要:

The sub-barrier fusion excitation functions are measured for the first time for the system $^7$Li +$^{28}$Si by the characteristic $γ$-ray method in the energy range $E_{lab}$= 7-11.5 MeV. The results show an enhancement, below the barrier, by about a factor of two when compared with the one-dimensional barrier penetration (1D BPM) model. Introduction of coupling with the rotational 2$^{+}$ state (1.779MeV) of the target improves the fit somewhat, but still an enhancement of about 25-40% remains.

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