论文标题
plutonium-241作为中微子质量测量和捕获的可能同位素
Plutonium-241 as a possible isotope for neutrino mass measurement and capture
论文作者
论文摘要
Tritium一直是测量中微子质量和计划检测遗物中微子背景的选择的同位素。 $^{3} $ h的低质量导致核的大量后坐力。这已成为两种测量值的限制因素。我们将$^{241} $ pu作为替代方案进行了研究。后坐力较小80倍，其衰减能量和寿命与$^{3} $ h。我们首次评估其软中心捕获横截面，并找到$（σv）_ν= 1.52 \ times 10^{ - 45} $。这是Tritium的捕获横截面的40％，使$^{241} $ PU成为$^{3} $ H的有趣替代方案。
Tritium has been the isotope of choice for measurements of the neutrino mass and planned detection of the relic neutrino background. The low mass of $^{3}$H leads to large recoil energy of the nucleus. This has emerged as a limiting factor for both measurements. We investigate $^{241}$Pu as an alternative. The recoil is 80x smaller and it has similar decay energy and lifetime as $^{3}$H. We evaluate for the first time its soft-neutrino capture cross-section and find $(σv)_ν = 1.52 \times 10^{-45}$. This is 40% of the capture cross-section for tritium and makes $^{241}$Pu an interesting alternative for $^{3}$H.
