Production of OH free radical using sheet plasma with vertical gas-flow

Abstract We demonstrated the production of hydroxyl (OH) free radicals by an argon magnetized sheet plasma with vertical gas-flow which is mixed with an oxygen gas O 2 and a hydrogen gas H 2 . As a result, the emission intensity of OH free radicals (306.4 nm) increases with increasing O 2 gas-flow, while the high energy part of the electron-energy distribution function f e ( E e ) above ~ 5 eV decreases. These results suggest the high energy part of f e ( E e ) contributes to the dissociation of O 2 and the production of OH free radicals.