具有可变硬谱的高通量锂反中微子源。如何减小全谱的误差？
High flux lithium antineutrino source with variable hard spectrum. How to decrease the errors of the total spectrum ?
摘要：
所提出的高通量锂反中微子源是基于7 Li（n，g）8Li-激活和随后的快速β-衰变（0.84 s）的8Li同位素，发射能量高达13 MeV的硬反中微子。在所讨论的方案中，核反应堆被用作（n，g）-活化的强中子源。产生的8Li同位素在通道中高速传输到远程中微子探测器，并被移回用于下一次激活。反中微子源在闭环中连续循环工作。在源方案中使用8Li硬反中微子谱确保了在探测器位置处显著更硬的总反中微子谱（与反应堆谱相比）。对总反中微子谱（反应堆反中微子谱加上锂反中微子谱）的误差分析证实，由于锂的存在，总反中微子谱的误差可以减小一倍以上。误差分析的结果对寻找无菌中微子有重要意义，并讨论了实验的可能结构。
英文摘要：
The proposed high flux lithium antineutrino source is based on 7Li(n,g)8Li-activation and subsequent fast beta-decay (0.84 s) of the 8Li isotope with emission of hard antineutrinos with energy up to 13 MeV. In the discussed scheme the nuclear reactor is used as an intensive neutron source for (n,g)-activation. The created 8Li isotopes are transported in the channels with a high speed to the remote neutrino detector and removed back for the next activation. The antineutrino source operates in the continuous cycle in the closed loop. Use of 8Li hard antineutrino spectrum in the source scheme ensures significantly harder total antineutrino spectrum (compare to the reactor one) in the position of the detector. The analyses of errors of the total antineutrino spectrum (from reactor antineutrinos plus from lithium ones) confirmed that owing to the lithium the errors of the total antineutrino spectrum can be diminished in two times and more. The results of errors analysis is important for sterile neutrino search and the possible configuration of the experiment is discussed.
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