title: Plasma line emission during single-bubble cavitation.
abstract: Emission lines from transitions between high-energy states of noble-gas atoms (Ne, Ar, Kr, and Xe) and ions (Ar(+), Kr(+), and Xe(+)) formed and excited during single-bubble cavitation in sulfuric acid are reported. The excited states responsible for these emission lines range 8.3 eV (for Xe) to 37.1 eV (for Ar(+)) above the respective ground states. Observation of emission lines allows for identification of intracavity species responsible for light emission; the populated energy levels indicate the plasma generated during cavitation is comprised of highly energetic particles.
authors.affiliation: Department of Chemistry, University of Illinois at Urbana-Champaign, 61801, USA.
authors.forename: David J
authors.initials: DJ
authors.lastname: Flannigan
authors.forename: Kenneth S
authors.initials: KS
authors.lastname: Suslick