Helfer I K, Miller K M
Environmental Measurements Laboratory, U.S. Department of Energy, New York, NY 10014-3621.
Health Phys. 1988 Jul;55(1):15-29. doi: 10.1097/00004032-198807000-00002.
Calibration factors to convert a measured full-absorption peak count rate to activity in the soil and dose rate in air are given for Ge detectors that are used for field measurements of radionuclides. The appropriate factors for a given detector are derived using three primary parameters: the manufacturer's quoted efficiency at 1332 keV relative to a 7.6 cm (3 in.) long by 7.6 cm (3 in.) diameter NaI(Tl) detector, the detector's orientation in the field (up or down) and the Ge crystal length/diameter ratio. The accuracy of the results obtained by using this simplified calibration technique is estimated to be 10-15%.
给出了用于放射性核素现场测量的锗探测器的校准因子，这些因子可将测量的全吸收峰计数率转换为土壤中的活度和空气中的剂量率。给定探测器的适当因子是通过三个主要参数推导得出的：制造商给出的相对于7.6厘米（3英寸）长、7.6厘米（3英寸）直径的碘化钠（铊）探测器在1332千电子伏时的效率、探测器在现场的方向（向上或向下）以及锗晶体的长度/直径比。使用这种简化校准技术获得的结果的准确度估计为10% - 15%。
