无危害放射性测井教学实验设计

摘要

In order to set up the non-damage teaching experiments of radiation well-logging ,the 40 K within potassium chloride is used to replace the gamma ray sources ,and the experimental devices ,measurement sample ,and experimental contents are designed . Moreover , the radiation damage and teaching effect are analyzed .The results show that potassium chloride can not only meet the requirement of the radiation well-logging experiment , but also increase the number of experiments , for example , the measurement of pair production and calculation of element content . Furthermore , the radiation dose is below the standard of gamma-ray source ,so students can finish the experiment safely ,and the teaching effects are improved .The experiment can help students allay fears , consolidate the knowledge of radiation well-logging courses , unrestricted by the rules of Environmental Protection Department . Above all , the radiation well-logging experiment courses can be set up in some non-nuclear universities and colleges .%为了在无放射源危害的前提下开设放射性测井教学实验，使用氯化钾中的40 K代替伽马放射源，研究了实验配套装置、测量样品及实验内容，并分析了此实验的辐射危害及教学效果。结果表明，氯化钾样品所释放伽马射线不仅可以满足放射性测井实验要求，还可以分析电子对效应、计算元素含量，丰富了实验内容。此实验的辐射剂量低于放射源的下限标准，可以保证实验过程对学生无危害，有利于消除学生的放射性恐惧心理，并且不受放射源使用条例制约，可在非核类院校的放射性测井实验课程中开设。