Measurements and Simulations of Spatial Distribution Change of Ions Surrounding an Alpha Source With Temperature, Humidity and Airflow Using a Position-Sensitive Micro-Ionization Chamber

A new alpha radioactivity measurement technique has been developed, which measures alpha radioactivity by ions created by alpha particles. In order to optimize this technique, a better understanding of ion´s distributions surrounding an alpha source is required. For this purpose, we have developed a position-sensitive micro-ionization chamber with multichannel charge-integrating application specific integrated circuits (ASICs) and obtained experimental results and simulation results of ion´s distributions. In this paper, we continue to study ion´s distribution changes with temperature, humidity, and airflow using the position-sensitive micro-ionization chamber and show their experimental results and simulation results