（α，n）反应中的中子产生
Neutron production in (alpha, n) reactions
摘要：
中子可以在寻找稀有过程的地下实验中诱发背景事件。MeV范围内的中子在放射性衰变中通过自发裂变和（α，n）反应以及宇宙射线产生。放射性中子通量在大深度（>1 km w）占主导地位。e.）。许多计算机代码可用于计算（α，n）反应的截面，激发函数和中子产额。我们已经使用EMPIRE2.19/3.2.3和TPENS 1.9来计算中子产生截面和跃迁到基态和激发态的分支比，并修改了SOURCES 4A来评估与高灵敏度地下实验相关的不同材料中的中子产额和谱。我们在这里报告不同的模型和代码与实验数据的比较，估计这些计算的准确性。
英文摘要：
Neutrons can induce background events in underground experiments looking for rare processes. Neutrons in a MeV range are produced in radioactive decays via spontaneous fission and (alpha, n) reactions, and by cosmic rays. Neutron fluxes from radioactivity dominate at large depths (>1 km w. e.). A number of computer codes are available to calculate cross-sections of (alpha, n) reactions, excitation functions and neutron yields. We have used EMPIRE2.19/3.2.3 and TALYS1.9 to calculate neutron production cross-sections and branching ratios for transitions to the ground and excited states, and modified SOURCES4A to evaluate neutron yields and spectra in different materials relevant to high-sensitivity underground experiments. We report here a comparison of different models and codes with experimental data, to estimate the accuracy of these calculations.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
