一种基于硫酸钙（CaSO4）:镝（Dy）颗粒与硫混合的热释光快中子剂量计。

A thermoluminescent fast-neutron dosemeter based on pellets of CaSO4: Dy mixed with sulphur.

作者信息

Pradhan A S, Bhatt R C, Lakshmanan A R, Chandra B, Shinde S S

出版信息

Phys Med Biol. 1978 Jul;23(4):723-9. doi: 10.1088/0031-9155/23/4/013.

Abstract

The fast neutron activation reaction 32S(n, p) 32P in CaSO4: Dy has been used in the measurements of fast neutron dose by employing a post-irradiation TL accumulation method. In order to increase the efficiency of the method CaSO4: Dy powder was mixed with sulphur powder in various proportions from which pellets weighing each were made. After neutron irradiation these pellets were each burnt in an aluminium planchette and the phosphor residue with 32P beta activity on it was allowed to undergo self-irradiation for TL accumulation. The fast neutron efficiency of the system employing 10 pellets of 0.1% CaSO4: Dy was found to be about 100 times that of bare CaSO4: Dy powder.

摘要

CaSO4:Dy中的快中子活化反应32S(n, p) 32P已通过辐照后热释光累积法用于快中子剂量测量。为提高该方法的效率，将CaSO4:Dy粉末与硫粉按不同比例混合，制成每颗重量相同的小球。中子辐照后，将这些小球分别在铝制样品盘中燃烧，带有32Pβ活性的磷光体残渣进行自辐照以累积热释光。发现使用10颗0.1% CaSO4:Dy小球的系统的快中子效率约为纯CaSO4:Dy粉末的100倍。