Ishikawa T, Sugita H, Nakamura T
Technical Research Institute, Fujita Corporation, Yokohama, Japan.
Health Phys. 1991 Feb;60(2):209-21. doi: 10.1097/00004032-199102000-00009.
We investigated a thermalization of neutrons, which were produced by an accelerator in a concrete room, by experiments and calculations. It was clarified that the widely used simple empirical formula phi th = c x Q/S, where Q is the neutron source intensity and S is the total surface area of a room, gives about one-third the underestimated value to our experimental and calculated results and the coefficient, c, is not a constant, but dependent on the source neutron energy.
我们通过实验和计算研究了由加速器在混凝土房间中产生的中子的热化情况。结果表明，广泛使用的简单经验公式φth = c x Q/S（其中Q是中子源强度，S是房间的总表面积）给出的结果比我们的实验和计算结果低估了约三分之一，并且系数c不是一个常数，而是取决于源中子能量。
