Pálfalvi J K, Akatov Yu, Szabó J, Sajó-Bohus L, Eördögh I
KFKI-Atomic Energy Research Institute, P.O. Box 49, H-1525 Budapest, Hungary.
Radiat Prot Dosimetry. 2006;120(1-4):427-32. doi: 10.1093/rpd/nci673. Epub 2006 May 30.
To study the radiation environment inside the International Space Station, solid state nuclear track detector stacks were used. Within the BRADOS experiments, Phase 1, seven stacks were exposed at different locations of the Russian segment 'Zvezda' for 248 days in 2001. It was supposed that the radiation field inside the ISS was composed from primary cosmic ray particles penetrating the wall of the ISS and secondaries, mainly neutrons induced by primaries in the wall and other structural materials surrounding the detectors. Based on the calibration made by utilising the high energy neutron reference field CERF at CERN (Geneva, Switzerland), the tracks induced by neutrons were separated from those induced by primary particles. Thus, the stacks, on one hand, provided the secondary neutron ambient dose equivalent. On the other hand, from the analysis of the rest of the tracks, the linear energy transfer spectra were computed and the flux and the dose of the primary particles were determined as shown in this paper.
为研究国际空间站内部的辐射环境，使用了固态核径迹探测器堆栈。在BRADOS实验的第一阶段，2001年有七个堆栈在俄罗斯“星辰”号舱段的不同位置暴露了248天。据推测，国际空间站内部的辐射场由穿透国际空间站舱壁的初级宇宙射线粒子以及次级粒子组成，主要是初级粒子在舱壁和探测器周围的其他结构材料中诱发的中子。基于利用位于瑞士日内瓦欧洲核子研究中心的高能中子参考场CERF所做的校准，将中子诱发的径迹与初级粒子诱发的径迹区分开来。因此，这些堆栈一方面提供了次级中子环境剂量当量。另一方面，通过对其余径迹的分析，计算了线能量传递谱，并确定了初级粒子的通量和剂量，如本文所示。
