Accelerator‐based Neutron Fluence Standard of the National Metrology Institute of Japan
Accelerator‐based Neutron Fluence Standard of the National Metrology Institute of Japan
复制标题
日本国家计量研究所基于加速器的中子注量标准
DOI：
10.1063/1.3120189
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发表时间：
2009
期刊：
影响因子：
--
通讯作者：
K. Kudo
中科院分区：
文献类型：
--
作者：
H. Harano;Tetsuro Matsumoto;J. Nishiyama;A. Uritani;K. Kudo
我们报告了日本加速器快中子注量率国家标准的现状。用货车德格拉夫加速器建立了144 keV、565 keV、5.0 MeV和8.0 MeV的单能中子注量标准，用考克饶夫沃尔顿加速器建立了2.5 MeV和14.8 MeV的单能中子注量标准。这些标准是为测量个人剂量计和测量仪等中子敏感装置的探测效率和能量响应而编制的。这些能量的中子产生和绝对注量测量。我们正在开发几十keV能量区域的新标准，这里也介绍了我们的未来计划。
We report the present status of the national standard on accelerator‐based fast neutron fluences in Japan. Monoenergetic neutron fluence standards have been established at 144 keV, 565 keV, 5.0 MeV and 8.0 MeV by using a Van de Graaff accelerator and at 2.5 MeV and 14.8 MeV by using a Cockcroft Walton accelerator. These standards are prepared to measure the detection efficiency and the energy response of neutron sensitive devices, such as personal dosimeters and survey meters. Neutron production and absolute fluence measurement for these energies are described. We are developing a new standard in the energy region of a few tens of keV, which is also introduced here as well as our future plans.