论文部分内容阅读
目的 为掌握GR-200A热释光探测器对电子线剂量测量的最佳条件,了解该探测器在剂量测量中的实用性。方法 使用RTS-200二维扫描水箱、ELEKTA Precise医用电子直线加速器及RGD-3B热释光剂量测量仪等设备进行了相关研究。结果 通过水箱分析医用高能电子线的剂量分布特征,可精确确定GR-200A热释光探测器的剂量测量位点,适于在热释光剂量学研究和应用实践中推广;在准确定位照射下,该探测器对4～8 Mev电子线的能量响应在5％以内、剂量率标准偏差和剂量线性偏差分别为2.3％和4％,可初步实现放射治疗剂量和个人剂量当量Hp(d)的测量。结论GR-200A热释光探测器在医用高能电子线剂量测量中有一定的实用价值。
Objective To understand the optimal conditions of GR-200A thermoluminescence detector for electron dose measurement and to understand the practicability of the detector in dose measurement. Methods RTS-200 two-dimensional scanning water tank, ELEKTA Precise medical linear accelerator and RGD-3B thermoluminescence dosimetry and other equipment were studied. Results Through the analysis of the dose distribution characteristics of the medical high-energy electronic wires in the water tank, the dose measurement sites of the GR-200A thermoluminescence detector can be accurately determined and suitable for popularization in the research and application of thermoluminescence dosimetry. . The detector responds to energy of 4 to 8 Mev electron wires within 5%, and the standard deviation of dose rate and linear deviation of dose are 2.3% and 4%, respectively. The initial radiation dose and individual dose equivalent Hp (d) measuring. Conclusion GR-200A thermoluminescence detector has certain practical value in the measurement of medical high-energy electron beam dose.