低レベル放射線自動計測システムに用いられる磁気浮上装置 Magnetically levitating equipment used for an automatically measuring system of low level radioactive rays(DEPARTMENT OF ELECTRICAL ENGINEERING)
An Ionization chamber has some superior characters. One of them can be detected γ-rays in spite of a simple equipment. So the chamber has been widely used for monitoring air pollution by radioactivity. However, measurement of γ-rays in the atmosphere by using the ionization chamber is difficult because of its low sensitivity. We have developed the high sensitive ionization chamber for γ-rays constructed a magnetically levitating electrode without any insulating support. The developed equipment was applied the measurement of γ-rays in atmosphere. By using two those equipments, we have detected extremely small doses of γ-rays in the atmosphere and various gases.
九州産業大学工学部研究報告 (42), 43-48, 2005