Neutrino Capture Reactions on $^{40}$Ar
Neutrino Capture Reactions on $^{40}$Ar
复制标题
$^{40}$Ar 上的中微子俘获反应
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
M. Honma
中科院分区：
文献类型：
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作者：
Toshio Suzuki;M. Honma
用基于单极普适积分的壳层模型计算方法研究了Ar中的Gamow-Teller(GT)强度。计算的GT强度与最近的($p，n$)反应得到的实验数据是一致的。与以前的计算相比，太阳中微子B在Ar上的中微子俘获截面得到了增强。用随机相近似(RPA)方法计算了不同于0^+和1^+的多极子反应截面。对于大于50 MeV的中微子能量，它们的贡献变得很重要。
Gamow-Teller (GT) strength in $^{40}$Ar is studied by shell-model calculations with monopole-based universal intearction, which has tensor components of $\pi$\rho$-meson exchanges. Calculated GT strength is found to be consistent with the experimental data obtained by recent ($p, n$) reactions. Neutrino capture cross sections on $^{40}$Ar for solar neutrinos from $^{8}$B are found to be enhanced compared with previous calculations. The reaction cross sections for multipoles other than $0^{+}$ and $1^{+}$ are obtained by random-phase approximation (RPA). Their contributions become important for neutrino energies larger than 50 MeV.