RF plasmas in pure water (≃0.2 mS/m) can be generated within a hole in an insulating plate, apart from the electrodes. When the diameter of the hole is 3–10 mm, the plasmas can be maintained stably. The existence of bubbles in the hole is important for the generation of plasmas. In the results of spectroscopic measurements, only the lines from the atoms (O, H) and molecule (OH) derived from H2O molecules were observed.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.