Teaching materials for radiation training and user guides

摘要

Training for radiation teaching is important because of understanding radiation. Training methods except for a cloud chamber were proposed in this study; for example, drawing a visual image of a sand-picture by scanning its beta-rays with a handy type GM dosimeter. Though training hours are limited, measurement of alpha-, beta- and gamma-rays is useful to understand important characteristics of radiation. So, useful radioactive materials are the keys of radiation training. Small sizes of radioactive minerals, chemical reagent of KCl and radon progeny in the air were excellent radioactive materials for training. The differences between ionization and excitation of radiation, the relationship between penetration powers of radiation and shield effects of materials, the differences between natural radioactive materials and artificial ones, and other extension lectures were taught usefully for every grade as training by using these teaching materials.