A COMPARISON OF THE MEASUREMENTS FROM TWO KINDS OF DOSIMETERS ON BOARD RECOVERABLE SATELLITES
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摘要: 本文利用1994年和1996年两次返回式卫星的搭载条件对舱内辐射剂量进行了对比测量.通过对比测量,研究不同掺杂、不同厚度LiF剂量计测量空间辐射剂量的特点;研究GM计数管计数和LiF剂量间的转换系数以及转换系数随屏蔽状况的变化;由剂量和GM计数研究粒子平均碰撞阻止本领的估计方法.结果表明,不同掺杂、不同厚度的LiF剂量计测量结果间无显著差异,而转换系数几乎不受舱内位置和屏蔽状态的影响.不同厚度LiF剂量计,不同屏蔽状态的GM计数管计数和剂量—计数转换系数的比较研究以及对粒子平均碰撞阻止本领的估计表明,舱内辐射剂量起决定作用的是高能粒子成分,其平均碰撞阻止本领估计约为5MeV／cm.Abstract: The radiation doses measured by GM counters and LiF dosimeters on board recoverable satellites for 1994 and 1996 are presented and the relation between the particle counts and the measured doses by LiF dosimeters is investigated. The average stopping power of the paricles in muscle is estimated. The results show that the ratio of the counts to the dose is constant though the shielding is quite differen. The doses measured by LiF dosimeters with the different thickness are similar and the average stopping power is estimated about 5MeV / cm. It means that the energies of the charged prides are considerably high.
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Key words:
- Space radiation /
- Radiation dose /
- Stopping power
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