Calibration of X-Ray and Gamma-Ray Measuring Instruments

Summary: Explains the process for establishing calibration or correction factors for radiation detectors, charge sensitivity tests for high-gain electrometers, & irradiations of passive dosimeters. Calibrations are performed by comparing the instrument to a primary standard, which includes 4 free-air chambers for x-rays & cavity ionization chambers for ceseum-137 & cobalt-60 gamma rays. This document presents details of the d...esign & use of these standards, as well as a description of the quality assurance checks. Appendices: Attix chamber schematics; history of the measurement of current; typical ionization chamber calibration report; typical TLD calibration report; & typical electrometer calibration report. Charts & tables. [read more]