The study of the particle showers created inside the Earth’s atmosphere due to interactions of cosmic rays of solar and galactic origin is of great importance for the determination of the radiation impact on technological and biological systems. DYASTIMA is a Geant4-based software application that simulates the evolution of secondary particle cascades inside the atmosphere of Earth. DYASTIMA-R is a new feature especially created for assessing the exposure of flight-personnel and frequent flyers to cosmic radiation by performing calculations of radiobiological quantities, such as dose and equivalent dose rates for several air-flight scenarios. In this work, the validation of DYASTIMA/DYASTIMA-R, according to internationally accepted ICRP and ICRU standards, is discussed. Initial results for radiobiological quantities for several air-flight scenarios are also included. The results for specific scenarios calculated by DYASTIMA/DYASTIMA-R are provided as a federated product through the European Space Agency Space Situational Awareness Space Weather Service Centre Network.

中文翻译：

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评估地球大气中的辐射暴露。

研究由于太阳和银河系宇宙射线的相互作用而在地球大气层内部形成的粒子阵雨，对于确定辐射对技术和生物系统的影响至关重要。DYASTIMA是一个基于Geant4的软件应用程序，可以模拟地球大气内部次级粒子级联的演化。DYASTIMA-R是一项新功能，专门用于通过执行放射生物学量（例如几种飞行场景的剂量和等效剂量率）的计算来评估飞行人员和飞行常客暴露于宇宙辐射中。在这项工作中，讨论了根据国际公认的ICRP和ICRU标准对DYASTIMA / DYASTIMA-R的验证。还包括几种飞行情况下的放射生物学数量的初步结果。由DYASTIMA / DYASTIMA-R计算的特定方案的结果通过欧洲航天局空间态势感知空间天气服务中心网络作为联合产品提供。