特大太阳质子事件所致航天员辐射剂量估算研究

发布时间：2018-03-05 18:04

本文选题：特大太阳质子事件　切入点：体元模型　出处：《航天医学与医学工程》2008年05期 　论文类型：期刊论文

【摘要】：目的为估算载人航天无地磁屏蔽下特大太阳质子事件的辐射剂量,建立包括构造特大太阳质子事件能谱、人体模型和Monte Carlo输运程序的解决方案。方法建立航天器和人体屏蔽模型,编写的Monte Carlo程序计算用大于30 MeV质子注量归一化的1956年和1972年特大太阳质子事件所致的器官吸收剂量。结果根据程序计算得到了不同屏蔽厚度两种谱型的特大太阳质子事件主要器官吸收剂量,与前人研究结果相近。结论通过比较验证计算方案结果可靠,特大太阳质子事件会造成很大器官吸收剂量,是载人航天非常大的潜在辐射危险。
[Abstract]:Objective to estimate the radiation dose of the extraordinarily large solar proton event in manned space flight without geomagnetic shielding, and to establish the energy spectrum including the construction of the extraordinarily large solar proton event energy spectrum. Solutions for human body models and Monte Carlo transport programs. Methods spacecraft and human body shielding models were established. The Monte Carlo program was written to calculate the organ absorbed doses caused by the extremely large solar proton events of 1956 and 1972, which were normalized by proton flux of more than 30 MeV. Results according to the program, two spectral types with different shielding thickness were obtained. The absorbed dose of the main organs of the positive proton event, Conclusion the results of the calculation are reliable and the extraordinarily large solar proton event will result in large organ absorbed dose which is a very large potential radiation hazard for manned spaceflight.
【作者单位】：清华大学工程物理系;中国航天员科研训练中心;
【基金】：国家自然科学基金(10575065,10705019)
【分类号】：R144.1;R85

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