Abstract

The cross sections of neutrino absorption by the gallium-71 nucleus are obtained for neutrinos from artificial ³⁷Ar, ⁵¹Cr, and ⁶⁵Zn sources. The calculations rely on the new measurement of the energy threshold of this absorption reaction, and contributions of germanium-71 excited states to the total cross section are estimated by invoking the data on the ⁷¹Ga(³He,t)⁷¹Gе charge-exchange reaction. The results are important for searches for sterile neutrinos in calibration experiments.

中文翻译：

---

镓71核吸收中微子的截面

摘要

对于中微子，从人工³⁷ Ar，⁵¹ Cr和⁶⁵ Zn来源获得了镓71核吸收中微子的截面。的计算依赖于这个吸收反应的能量阈值的新的测量，并以总截面锗-71激发态的贡献通过调用所述数据估计⁷¹ Ga（下³赫，t）的⁷¹ Gе电荷交换反应。该结果对于在校准实验中搜索无菌中微子非常重要。