卫星舱内电离辐射强度的动态变化  

Dynamic variation of Ioning Radiation Intensity inside the Satellite Module

作　　者：李向高[1] 陈湄[1] 祁章年[1] 王卫红[1] 房兴业[1] 贾向红[1] 

机构地区：[1]航天医学工程研究所

出　　处：《航天医学与医学工程》1996年第1期24-27,共4页Space Medicine & Medical Engineering

摘　　要：为探讨卫星舱内电离辐射强度动态变化，用单片机定时采集个人辐射剂量计的计数脉冲，自动存储在电擦除只读存储器中，组成微型的电离辐射强度动态数据记录装置，搭载于我国的返回式卫星上，成功地测得了舱内电离辐射强度随卫星飞经的空域不同而变化的动态数据，并在星下点轨迹图上绘出带电粒子分布状态，描绘出地磁俘获辐射在南大西洋异常区的位置和形状，其中心位于西经４２．３３°、南纬３２．８８°，与空间实验室测到的结果相近。实测的最大剂量率为０．２３ｍＧｙ／ｈ。还发现异常区中带电粒子的立体构形是一个粒子密集的团块，团块的核心大约处在２５０ｋｍ的高度上，因此，有必要进行重复检测和深入的探查。Radiation dose rises in the cabin when spacecraft passes through the innertrapped radiation belts.To investigate the distribution of charged parlicles in the near-earthorbit space,dynamic variation of the ionizing radiation intensity inside the Chinese recover-able saltellite module was measured in 1994.Personal radiation dosimeter' s data were countedby a microcomputer and stored in an electricily erasable programmable read only memory,then the distribution of charged particles along the satellite orbit were recorded.The resultsshow that the center of South Atlantic Anomaly (SAA)region positions at 42.33°west-lon-gitude and 32.88° seuth-latitude which is consistent with the results from Spacelab 1 and2 The maximum dose-rate is 0.23 mGy/h.This result also proves that the average daily dose calculated in early experiments is reliable.

关 键 词：内辐射带 辐射测量 剂量计 人造卫星 

分 类 号：R852.7[医药卫生—航空、航天与航海医学]