Instability of homogeneous barrier discharge in humid air, N2 and O2 at atmospheric pressure

摘要

. This discharge is recognized as an Atmospheric Pressure Townsend Discharge (APTD). Recently, we found interesting phenomena that although the APTD can be generated in humid oxygen, it cannot be generated in humid air and humid nitrogen (RH: 80%). In this study, in order to clarify why discharge mode in humid air or nitrogen gas transferred from homogeneous mode to filamentary mode, we analyzed gas components after discharge using an FTIR analyzer with a long path gas cell (1 m).