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Title: Numerical study of the influence of surface reaction probabilities on reactive species in an rf atmospheric pressure plasma containing humidity

Abstract

The quantification and control of reactive species (RS) in atmospheric pressure plasmas (APPs) is of great interest for their technological applications, in particular in biomedicine. Of key importance in simulating the densities of these species are fundamental data on their production and destruction. In particular, data concerning particle-surface reaction probabilities in APPs are scarce, with most of these probabilities measured in low-pressure systems. In this work, the role of surface reaction probabilities, γ, of reactive neutral species (H, O and OH) on neutral particle densities in a He–H 2O radio-frequency micro APP jet (COST-$$\mu $$APPJ) are investigated using a global model. It is found that the choice of γ, particularly for low-mass species having large diffusivities, such as H, can change computed species densities significantly. Furthermore the importance of γ even at elevated pressures offers potential for tailoring the RS composition of atmospheric pressure microplasmas by choosing different wall materials or plasma geometries.

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3];  [1];  [1]
  1. Univ. of York, York (United Kingdom)
  2. Univ. of York, York (United Kingdom); Sorbonne Univ., Palaiseau (France)
  3. Univ. of Michigan, Ann Arbor, MI (United States)
Publication Date:
Research Org.:
Univ. of Michigan, Ann Arbor, MI (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1502093
Grant/Contract Number:  
SC0014132
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Plasma Physics and Controlled Fusion
Additional Journal Information:
Journal Volume: 60; Journal Issue: 1; Journal ID: ISSN 0741-3335
Publisher:
IOP Science
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; low-temperature plasma; plasma-surface interactions; atmospheric pressure plasma; reactive species

Citation Formats

Schröter, Sandra, Gibson, Andrew R., Kushner, Mark J., Gans, Timo, and O’Connell, Deborah. Numerical study of the influence of surface reaction probabilities on reactive species in an rf atmospheric pressure plasma containing humidity. United States: N. p., 2017. Web. doi:10.1088/1361-6587/aa8fe9.
Schröter, Sandra, Gibson, Andrew R., Kushner, Mark J., Gans, Timo, & O’Connell, Deborah. Numerical study of the influence of surface reaction probabilities on reactive species in an rf atmospheric pressure plasma containing humidity. United States. doi:10.1088/1361-6587/aa8fe9.
Schröter, Sandra, Gibson, Andrew R., Kushner, Mark J., Gans, Timo, and O’Connell, Deborah. Wed . "Numerical study of the influence of surface reaction probabilities on reactive species in an rf atmospheric pressure plasma containing humidity". United States. doi:10.1088/1361-6587/aa8fe9. https://www.osti.gov/servlets/purl/1502093.
@article{osti_1502093,
title = {Numerical study of the influence of surface reaction probabilities on reactive species in an rf atmospheric pressure plasma containing humidity},
author = {Schröter, Sandra and Gibson, Andrew R. and Kushner, Mark J. and Gans, Timo and O’Connell, Deborah},
abstractNote = {The quantification and control of reactive species (RS) in atmospheric pressure plasmas (APPs) is of great interest for their technological applications, in particular in biomedicine. Of key importance in simulating the densities of these species are fundamental data on their production and destruction. In particular, data concerning particle-surface reaction probabilities in APPs are scarce, with most of these probabilities measured in low-pressure systems. In this work, the role of surface reaction probabilities, γ, of reactive neutral species (H, O and OH) on neutral particle densities in a He–H2O radio-frequency micro APP jet (COST-$\mu $APPJ) are investigated using a global model. It is found that the choice of γ, particularly for low-mass species having large diffusivities, such as H, can change computed species densities significantly. Furthermore the importance of γ even at elevated pressures offers potential for tailoring the RS composition of atmospheric pressure microplasmas by choosing different wall materials or plasma geometries.},
doi = {10.1088/1361-6587/aa8fe9},
journal = {Plasma Physics and Controlled Fusion},
issn = {0741-3335},
number = 1,
volume = 60,
place = {United States},
year = {2017},
month = {11}
}

Journal Article:
Free Publicly Available Full Text
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