Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Spatially and temporally resolved H and OH densities in a nanosecond pulsed plasma jet: an analysis of the radical generation, transport, recombination and memory effects

Journal Article · · Journal of Physics. D, Applied Physics

Abstract

Cold atmospheric pressure plasma jets (APPJs) enable the generation of a large flux of highly reactive species to heat sensitive substrates at near ambient temperatures. Nonetheless, the experimental determination of reactive species inside APPJs, while exceedingly important, has not been reported in significant detail. In this work, we report the time-resolved axial density of hydroxyl (OH) and hydrogen radicals (H) in an APPJ device and its effluent operating in a He–H2O mixture using 1D laser induced fluorescence (LIF) and two-photon absorption LIF (TALIF). The results show that H and OH are mainly generated between the electrodes in the APPJ rather than by the guided streamer. The produced H and OH inside the jet are convectively transported to the jet effluent and determine the H and OH densities in jet effluent. The dominant production and destruction mechanisms of H and OH were obtained from a 0D model. The different production mechanisms of H and OH can explain the change in memory effect observed for OH (and not for H) for varying pulse repetition rates of the plasma generation.

Research Organization:
Univ. of Minnesota, Minneapolis, MN (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
DOE Contract Number:
SC0016053
OSTI ID:
1852088
Journal Information:
Journal of Physics. D, Applied Physics, Vol. 54, Issue 11; ISSN 0022-3727
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English

References (27)

Low temperature plasma biomedicine: A tutorial review journal August 2014
Atmospheric Pressure Low Temperature Direct Plasma Technology: Status and Challenges for Thin Film Deposition journal August 2012
The emerging role of reactive oxygen and nitrogen species in redox biology and some implications for plasma applications to medicine and biology journal June 2012
Reactive species in non-equilibrium atmospheric-pressure plasmas: Generation, transport, and biological effects journal May 2016
Molecular admixtures and impurities in atmospheric pressure plasma jets journal October 2018
O · , H · , and · OH radical etching probability of polystyrene obtained for a radio frequency driven atmospheric pressure plasma jet journal May 2020
Ag + reduction and silver nanoparticle synthesis at the plasma–liquid interface by an RF driven atmospheric pressure plasma jet: Mechanisms and the effect of surfactant
  • Kondeti, V. S. Santosh K.; Gangal, Urvashi; Yatom, Shurik
  • Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, Vol. 35, Issue 6 https://doi.org/10.1116/1.4995374
journal November 2017
Experimental Investigation of Plasma Oxidization of Diesel Particulate Matter journal December 2012
Review of the methods to form hydrogen peroxide in electrical discharge plasma with liquid water journal April 2011
Production of active species in cold helium–air plasma jets journal September 2014
Formation of reactive oxygen and nitrogen species by repetitive negatively pulsed helium atmospheric pressure plasma jets propagating into humid air journal May 2015
Electrode configurations in atmospheric pressure plasma jets: production of reactive species journal October 2018
Numerical Study of Jet–Target Interaction: Influence of Dielectric Permittivity on the Electric Field Experienced by the Target journal October 2019
Atmospheric pressure plasma jets onto a reactive water layer over tissue: pulse repetition rate as a control mechanism journal October 2018
Spatiotemporal measurement of OH density from upstream to downstream in humid helium atmospheric-pressure plasma jet journal March 2020
Absolute atomic hydrogen density measurements in an atmospheric pressure plasma jet: generation, transport and recombination from the active discharge region to the effluent journal March 2020
Nanosecond pulsed humid Ar plasma jet in air: shielding, discharge characteristics and atomic hydrogen production journal September 2017
Absolute calibration of OH density in a nanosecond pulsed plasma filament in atmospheric pressure He–H 2 O: comparison of independent calibration methods journal October 2013
Air plasma treatment of liquid covered tissue: long timescale chemistry journal September 2016
Characterization of an atmospheric helium plasma jet by relative and absolute optical emission spectroscopy journal December 2012
Electron densities and energies of a guided argon streamer in argon and air environments journal November 2013
Time-resolved absolute OH density of a nanosecond pulsed discharge in atmospheric pressure He–H 2 O: absolute calibration, collisional quenching and the importance of charged species in OH production journal June 2014
Modelling of OH production in cold atmospheric-pressure He–H 2 O plasma jets journal June 2013
The effect of the pulse repetition rate on the fast ionization wave discharge journal May 2018
The Energy of Dissociation H 2 O→H+OH journal November 1949
OH Dynamics in a Nanosecond Pulsed Plasma Filament in Atmospheric Pressure He–H2O upon the Addition of O2 journal February 2014
Effect of oxygen concentration on the postdischarge decay of hydroxyl density in humid nitrogen-oxygen pulsed streamer discharge journal July 2020

Related Subjects