Neutrino-nucleus reactions based on new shell model Hamiltonians
Neutrino-nucleus reactions based on new shell model Hamiltonians
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DOI：
10.1103/physrevc.74.034307
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发表时间：
2006-08
影响因子：
3.1
通讯作者：
Toshio Suzuki;S. Chiba;T. Yoshida;T. Kajino;T. Otsuka
中科院分区：
文献类型：
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作者：
Toshio Suzuki;S. Chiba;T. Yoshida;T. Kajino;T. Otsuka
利用一个新的p壳层核壳模型哈密顿量，适当考虑了自旋-同位旋相互作用的重要作用，得到了由静止衰变中微子和超新星中微子引起的中微子-{sup 12}C反应截面.通过Hauser-Feshbach理论计算了各种衰变通道的分支比。用最近的壳模型哈密顿量研究了中微子-{sup 4}He反应.与以前的计算相比，发现反应截面对于{sup 12}C和{sup 4}He都有所增强。作为一个有趣的结果，这一点，一个可能的增强生产的轻元素，{sup 7}Li和{sup 11}B，在超新星爆炸期间指出。
A new shell model Hamiltonian for p-shell nuclei which properly takes into account important roles of spin-isospin interactions is used to obtain cross sections of neutrino-{sup 12}C reactions induced by decay-at-rest neutrinos as well as supernova neutrinos. Branching ratios to various decay channels are calculated by the Hauser-Feshbach theory. Neutrino-{sup 4}He reactions are also investigated by using recent shell model Hamiltonians. The reaction cross sections are found to be enhanced for both {sup 12}C and {sup 4}He compared with previous calculations. As an interesting consequence of this, a possible enhancement of the production yields of light elements, {sup 7}Li and {sup 11}B, during supernova explosions is pointed out.