论文标题
在20至70 keV能量范围内氩气的总中子横截面的测量
Measurement of the total neutron cross section on argon in the 20 to 70 keV energy range
论文作者
论文摘要
氩气中子相互作用的横截面是许多中微子，暗物质和中微子双β衰减实验的重要设计和操作参数，这些实验将液体氩作为检测或屏蔽介质。在ENDF数据库中给出的$ 20 $至$ 70〜 \ rm $ \ $ 20 $至$ 70〜 \ rm $ \ $ 20 $至$ 70〜 \ rm $ \之间存在差异，而ENDF数据库中给出的KeV中子动能区域与具有薄靶标（0.2 atoms/barn）进行的实验进行了单个测量，以优化了更高的横截面。这会导致液体氩气中子的相互作用长度的显着不确定性。现在，这种差异通过了此处的新结果来解决，从氩气传输相互作用实验（Artie）（ARTIE）是一个针对该能量区域的小横截面优化的厚目标实验（3.3原子/谷仓）。
The cross section for neutron interactions on argon is an important design and operational parameter for a number of neutrino, dark matter, and neutrinoless double beta decay experiments which use liquid argon as a detection or shielding medium. There is a discrepancy between the evaluated total cross section in the $20$ to $70~\rm$\,keV neutron kinetic energy region given in the ENDF database and a single measurement conducted by an experiment with a thin target (0.2 atoms/barn) optimized for higher cross sections. This gives rise to significant uncertainty in the interaction length of neutrons in liquid argon. This discrepancy is now resolved by new results presented here from the Argon Resonance Transport Interaction Experiment (ARTIE), a thick target experiment (3.3 atoms/barn) optimized for the small cross sections in this energy region.
