Weeks K J
Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina 27710, USA.
Med Phys. 1999 Jan;26(1):49-54. doi: 10.1118/1.598476.
Linear accelerators can produce electrons at high power and energy. These electrons can be targeted at materials to produce radionuclides. Monte Carlo simulation is used to follow the path of the linac electrons (15-35 MeV) through materials. The production of photons and their passage through the material is modeled. The method of using this Monte Carlo information to calculate activation in the materials is presented. It is found that kilowatt power levels can produce mCi amounts of radioactivity in minutes. This work permits systematic evaluation of the potential for designing linear accelerators for in-house production of radionuclides.
直线加速器能够以高功率和高能量产生电子。这些电子可以作用于材料以产生放射性核素。蒙特卡罗模拟用于追踪直线加速器电子（15 - 35兆电子伏特）在材料中的路径。对光子的产生及其在材料中的穿透过程进行了建模。介绍了利用这种蒙特卡罗信息来计算材料中活化的方法。结果发现，千瓦级功率水平能够在数分钟内产生毫居里量级的放射性。这项工作有助于对设计用于内部生产放射性核素的直线加速器的潜力进行系统评估。
