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有效剂量可解决航天员在空间飞行中所受质子辐射的危害比较与评价问题,在空间辐射危害评价中具有重要应用。为实现空间质子辐射有效剂量监测,针对空间各向同性质子辐射,利用蒙特卡罗程序设计了一种闪烁探测器。通过对探测器结构的特殊设计,在20-400 Me V能量范围内,各向同性质子在该探测器内沉积的能量与国际辐射防护委员会(International Commission on Radiological Protection,ICRP)116号报告提供的质子有效剂量基本成正比。通过探测质子沉积能量来监测质子辐射有效剂量,克服了直接测量有效剂量所存在的困难。对AP8MIN模型地球俘获带质子能谱与随机抽样质子辐射能谱,经数值计算,探测器给出的有效剂量与ICRP116号报告给出的有效剂量的相对偏差均小于±8%。
The effective dose can solve the comparison and evaluation problems of astronauts in the space flight proton radiation hazards, and has an important application in space radiation hazard assessment. In order to realize the effective dose monitoring of space proton radiation, aiming at space isotropic proton radiation, a kind of scintillation detector was designed by Monte Carlo program. Through the special design of the detector structure, the energy deposited by the isotropic protons in the detector in the energy range of 20-400 Me V is consistent with the International Commission on Radiological Protection (ICRP) No. 116 report The proton effective dose is basically proportional to. By detecting the proton deposition energy to monitor the effective dose of proton radiation, overcoming the direct measurement of the effective dose of the existing difficulties. For the AP8MIN model, the proton energy spectra of the earth-captures and the stochastic sampling proton radiation spectra are numerically calculated. The relative dosages of the effective doses given by the detector and those reported in the ICRP report are less than ± 8%.