Abstract

We generated H2O-ice dielectric barrier discharge (DBD), which has H2O ice as a dielectric barrier, at a wide range of cryogenic temperatures down to 6.5 K, and controlled plasma gas temperature as a control parameter. H2O-ice DBD exhibited variations in optical emissions and transition of discharge modes with changing plasma gas temperature. Furthermore, H2O-ice DBD is revealed to be anticipated to have sufficient reactivity as a reaction field on the ice surface in comparison with ultraviolet irradiated chemical reactions such as formation of amino acids. This study is the first report on gas temperature-controlled plasma generation coexistent with H2O ice, focusing on plasma gas temperature as a control parameter.

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