Online ISSN: 1884-4111 Print ISSN: 0033-8303
Radioisotopes 71(3): 233-244 (2022)


GM管サーベイメータ高電圧のコロナ放電実験への利用Use of GM Tube Survey Meter High Voltage for Corona Electric Discharge Experiment

1NPO法人放射線教育フォーラムNPO Radiation Education Forum

2名古屋大学医学系研究科Nagoya University, Graduate School of Medicine

受付日:2022年2月14日Received: February 14, 2022
受理日:2022年7月11日Accepted: July 11, 2022
発行日:2022年11月15日Published: November 15, 2022


For the purpose of utilizing the high voltage of a Geiger-Mueller (GM) tube survey meter for corona electric discharge experiment, the relation between the applied high voltage and corona discharge current for the different curvatures of the tips of the electrodes was examined both experimentally and theoretically. As a result, a new electric discharge phenomenon “triggered corona discharge” with the help of the usage of a leaf electroscope and tribo-electricity was found. Performance of science experiment such as corona electric discharge after radiation education experiments using the same GM tube survey meter is an effective use of the equipment and also helpful to understand “ionization phenomenon” from different perspectives of nuclear radiation, electric discharge and tribo-electricity.

Key words: GM tube; survey meter; high voltage; corona discharge; electrode curvature; leaf electroscope; tribo-electricity

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