Construction of monoenergetic neutron calibration fields using 45Sc(p, n)45Ti reaction at JAEA.
Construction of monoenergetic neutron calibration fields using 45Sc(p, n)45Ti reaction at JAEA.
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JAEA 使用 45Sc(p, n)45Ti 反应构建单能中子校准场。
DOI：
10.1093/rpd/ncm004
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发表时间：
2007
影响因子：
1
通讯作者：
M. Yoshizawa
中科院分区：
文献类型：
--
作者：
Y. Tanimura;J. Saegusa;Y. Shikaze;M. Tsutsumi;S. Shimizu;M. Yoshizawa
利用（45）Sc（p，n）（45）Ti反应建立了8和27keV单能中子刻度场。来自4 MV Pelletron加速器的质子被用来轰击蒸发到铂盘上的薄钪靶。通过向靶组件施加高电压，将质子能量精细地调节到共振以产生8和27 keV的中子。中子能量的测量使用飞行时间的方法与锂玻璃闪烁探测器。使用邦纳球在一个校准点位于50厘米从目标的中子注量进行了评价。将一个长计数器放置在距离靶2.2 m处，与质子束方向成60度，以监测校准点处的注量。在校准点的注量率和剂量当量率足以校准许多类型的中子测量仪。
The 8 and 27 keV monoenergetic neutron calibration fields have been developed by using (45)Sc(p, n)(45)Ti reaction. Protons from a 4-MV Pelletron accelerator are used to bombard a thin scandium target evaporated onto a platinum disc. The proton energies are finely adjusted to the resonance to generate the 8 and 27 keV neutrons by applying a high voltage to the target assemblies. The neutron energies were measured using the time-of-flight method with a lithium glass scintillation detector. The neutron fluences at a calibration point located at 50 cm from the target were evaluated using Bonner spheres. A long counter was placed at 2.2 m from the target and at 60 degrees to the direction of the proton beam in order to monitor the fluence at the calibration point. Fluence and dose equivalent rates at the calibration point are sufficient to calibrate many types of the neutron survey metres.