基于硫酸钙:镝聚四氟乙烯热释光剂量计圆盘的热释光剂量计徽章的X射线和γ射线响应

X- and gamma-ray response of the TLD badge based on CaSO4:Dy Teflon TLD discs.

作者信息

Vohra K G, Pradhan A S, Bhatt R C

出版信息

Health Phys. 1982 Sep;43(3):391-7. doi: 10.1097/00004032-198209000-00009.

DOI:10.1097/00004032-198209000-00009

Abstract

A TLD badge based on CaSO4: Dy Teflon TLD discs has been designed for personnel monitoring of radiation workers encountering X-rays of effective energies above 20 keV. The badge had two Teflon TLD discs, one of which is used bare (without any filter) and other which is used with a metal filter. By taking into account the TL readout of both of these discs, the problems of photon energy dependence as well as directional dependence of the badge have been reduced to a minimum. The uncertainty due to photon energy dependence above 29 KeV (eff.) was found to be within a value of +/- 15% (at an angle of incidence of 45 degrees). The directional dependence of the badge is within +/- 30% in the energy range from 35 KeV to 1.25 MeV. The badge is designed so as to provide approximate information on the effective photon energy of the X-ray exposures.

摘要

一种基于硫酸钙铕（CaSO4: Dy）聚四氟乙烯热释光剂量计（TLD）圆盘的TLD徽章已被设计用于对接触有效能量高于20 keV的X射线的辐射工作人员进行个人剂量监测。该徽章有两个聚四氟乙烯TLD圆盘，其中一个直接使用（无任何滤片），另一个与金属滤片一起使用。通过考虑这两个圆盘的热释光读出值，徽章的光子能量依赖性以及方向依赖性问题已降至最低。发现高于29 keV（有效）的光子能量依赖性导致的不确定度在+/- 15%的值范围内（入射角为45度时）。在35 keV至1.25 MeV的能量范围内，徽章的方向依赖性在+/- 30%以内。该徽章的设计目的是提供有关X射线照射有效光子能量的近似信息。