Holt J G, Edelstein G R, Clark T E
Phys Med Biol. 1975 Jul;20(4):559-70. doi: 10.1088/0031-9155/20/4/003.
The energy dependence of lithium fluoride dosemeters is a complicated function of energy as well as of cavity size. In the application of TLD to charged particle dosimetry, a cavity perturbation effect may exist even though the ratios of the mass stopping powers are constant over the energies encountered. This effect was investigated for lithium fluoride rods in electron fields ranging in energy from 2-5 to 20 MeV. A 13% change of TL response per unit of absorbed dose was measured over that energy range. A semi-empirical theory was developed to account for the cavity effect, using Burlin cavity theory as a starting point. The agreement between theory and measurement is satisfactory.
氟化锂剂量计的能量依赖性是能量以及腔尺寸的复杂函数。在热释光剂量计应用于带电粒子剂量测定时，即使在所遇到的能量范围内质量阻止本领之比是恒定的，也可能存在腔扰动效应。针对能量范围为2.5至20 MeV的电子场中的氟化锂棒对这种效应进行了研究。在该能量范围内，测得每单位吸收剂量的热释光响应变化了13%。以伯林腔理论为起点，开发了一种半经验理论来解释腔效应。理论与测量结果之间的一致性令人满意。
