Marckmann Carl Johan, Aznar Marianne C, Andersen Claus E, Bøtter-Jensen Lars
Radiation Research Department, Risø National Laboratory, DK-4000 Roskilde, Denmark.
Radiat Prot Dosimetry. 2006;119(1-4):363-7. doi: 10.1093/rpd/nci507. Epub 2006 Jun 8.
This paper analyses the influence of the Cerenkov radiation and other noise sources, the so-called stem effect, on radioluminescence (RL) signals generated in optical fibre Al2O3:C dosemeters used in medical dosimetry. The optical fibre dosemeter consists of a sensitive Al2O3:C crystal coupled to an optical fibre cable that carries the RL and optically stimulated luminescence (OSL) signals generated in the Al2O3:C crystal. During irradiation of the dosemeter, the real-time dose rate can be determined from the RL signal and after irradiation the total dose absorbed is determined from the OSL signal stimulated using a focused green solid-state laser. In particular, the components of the stem effect generated in the fibres were analysed to determine their impact on the RL signal.
本文分析了切伦科夫辐射和其他噪声源（即所谓的“茎效应”）对医用剂量测定中使用的光纤Al2O3:C剂量计所产生的辐射发光（RL）信号的影响。该光纤剂量计由一个敏感的Al2O3:C晶体与一根光纤电缆耦合组成，该电缆传输Al2O3:C晶体中产生的RL和光激发发光（OSL）信号。在剂量计辐照期间，可根据RL信号确定实时剂量率，辐照后，使用聚焦绿色固态激光器激发的OSL信号确定吸收的总剂量。特别地，分析了光纤中产生的茎效应的组成部分，以确定它们对RL信号的影响。
