skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Characterizing the dominant ions in low-temperature argon plasmas in the range of 1–800 Torr

Journal Article · · Physics of Plasmas
DOI:https://doi.org/10.1063/1.5020097· OSTI ID:1540166
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [1]
  1. Michigan State Univ., East Lansing, MI (United States). Dept. of Computational Mathematics, Science and Engineering; Michigan State Univ., East Lansing, MI (United States). Dept. of Electrical and Computer Engineering
  2. Michigan State Univ., East Lansing, MI (United States). Dept. of Computational Mathematics, Science and Engineering
  3. Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Electrical Engineering and Computer Science

The dominant ions in low-temperature rare gas plasmas can be either molecular ions or atomic ions depending on the discharge regime. Here, the dominant ions in low-temperature argon plasmas are characterized in a wide range of gas pressure (1-800 Torr). The channels for creation of molecular ions include atom assisted association, dissociative recombination, dissociation by atom impact (DAI), and dissociation by electron impact (DEI). The latter two were previously less often considered. It is found that the DEI reaction has a significant impact on the ion fractions, while the effect of the DAI reaction is much less important in the whole investigated gas pressure regime. As the gas pressure increases from 1 to 800 Torr, the atomic ion fraction drops rapidly in conjunction with an increase of the molecular ion fraction. This phenomenon confirms that in low-temperature argon plasmas the dominant ion will be the atomic ion in the low pressure regime but the molecular ion in the high pressure regime. The impact of power density is also investigated in combination with the DEI reaction. The results show that both the DEI reaction and the power density serve to delay the transition trend of the ion fraction, shifting the dominance of molecular ions to a higher pressure.

Research Organization:
Univ. of Michigan, Ann Arbor, MI (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
SC0001939
OSTI ID:
1540166
Alternate ID(s):
OSTI ID: 1424531
Journal Information:
Physics of Plasmas, Vol. 25, Issue 3; ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 3 works
Citation information provided by
Web of Science

References (68)

The 2012 Plasma Roadmap journal June 2012
Plasma medicine: an introductory review journal November 2009
On atmospheric-pressure non-equilibrium plasma jets and plasma bullets journal April 2012
A single electrode room-temperature plasma jet device for biomedical applications journal April 2008
Scaling and the design of miniaturized chemical-analysis systems journal July 2006
Characterizing uniform discharge in atmospheric helium by numerical modelling journal February 2009
Fundamental investigations of capacitive radio frequency plasmas: simulations and experiments journal November 2012
Stark broadening measurement of the electron density in an atmospheric pressure argon plasma jet with double-power electrodes journal March 2010
Ion energy distribution measurements in rf and pulsed dc plasma discharges journal April 2012
Effect of microwave frequency on breakdown and electron energy distribution function using a global model journal October 2008
Effect of electron energy distribution function on the global model for high power microwave breakdown at high pressures journal June 2008
Global model for high power microwave breakdown at high pressure in air journal April 2009
Predicted properties of microhollow cathode discharges in xenon journal January 2005
Plasma fluid modeling of microwave streamers: Approximations and accuracy journal November 2017
An object-oriented electromagnetic PIC code journal May 1995
Particle simulation of plasmas: review and advances journal April 2005
A benchmark study of a capacitively coupled oxygen discharge of the oopd1 particle-in-cell Monte Carlo code journal May 2013
Modelling of microdischarge devices: plasma and gas dynamics journal May 2005
Plasma-induced flow instabilities in atmospheric pressure plasma jets journal September 2017
Slow electron energy balance for hybrid models of direct-current glow discharges journal September 2017
Pressure effect on a tandem hollow cathode discharge in argon journal October 2017
Improved volume-averaged model for steady and pulsed-power electronegative discharges
  • Kim, Sungjin; Lieberman, M. A.; Lichtenberg, A. J.
  • Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, Vol. 24, Issue 6 https://doi.org/10.1116/1.2345645
journal November 2006
Global Model of He/O 2 and Ar/O 2 Atmospheric Pressure Glow Discharges journal August 2008
Global model of low-temperature atmospheric-pressure He + H 2 O plasmas journal March 2010
An investigation of the secondary electron kinetics and energy distribution in electron-beam-irradiated argon journal March 1996
Numerical modeling of the constriction of the dc positive column in rare gases journal March 1999
Heavy-particle hybrid modeling of transients in a direct-current argon discharge journal September 2000
Temporally and spatially resolved characterization of microwave induced argon plasmas: Experiment and modeling journal April 2014
Breakdown processes in metal halide lamps journal December 2002
Computational study of RF micro-hollow cathode discharge journal April 2015
A global model of the self-pulsing regime of micro-hollow cathode discharges journal March 2012
Comparison of a hybrid model with experiments in atmospheric pressure helium and argon capacitive rf discharges journal November 2014
Effect of Electron Energy Distribution on the Hysteresis of Plasma Discharge: Theory, Experiment and Modeling journal October 2015
Mode transition of microhollow cathode sustained discharge journal August 2016
Role of Ar2+ and Ar2+ ions in a direct current argon glow discharge: A numerical description journal October 1999
Simulation of dc atmospheric pressure argon micro glow-discharge journal August 2006
Numerical Model of an Argon Atmospheric Pressure RF Discharge journal October 2008
A global model of micro-hollow cathode discharges in the stationary regime journal October 2011
The role of molecular rare gas ions in plasmas operated at atmospheric pressure journal July 2003
Spatially averaged (global) model of time modulated high density argon plasmas
  • Ashida, Sumio; Lee, C.; Lieberman, M. A.
  • Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, Vol. 13, Issue 5 https://doi.org/10.1116/1.579494
journal September 1995
Emission spectrum of rare gas dimers in the vacuum UV region. II. Rotational analysis of band system I of Ar 2 journal August 1979
Influence of Ar 2 + in an argon collisional-radiative model journal March 2002
Kinetics of Ar * 2 in high-pressure pure argon journal January 2000
Theoretical and experimental studies of phototriggered discharges in argon and neon journal November 1990
Investigation on the effect of nonlinear processes on similarity law in high-pressure argon discharges journal November 2017
An advanced kinetic model of electron‐beam‐excited KrF lasers including the vibrational relaxation in KrF*( B ) and collisional mixing of KrF*( B , C ) journal May 1985
The temperature dependence of the three-body reaction rate coefficient for some rare-gas atomic ion-atom reactions in the range 100-300K journal August 1980
Modeling of microwave-induced plasma in argon at atmospheric pressure journal May 2012
On the role of vibrational excitation in dissociative recombination journal February 1981
Observation of dissociative recombination of Ne 2 + and Ar 2 + directly to the ground state of the product atoms journal April 1995
Dissociative recombination studies of Ar 2 + by time-of-flight spectroscopy journal December 1995
Electron Temperature Dependence of the Dissociative Recombination Coefficient of Molecular Argon Ions Ar+2 with Electrons journal December 2010
Electron and gas temperature dependences of the dissociative recombination coefficient of molecular ions {\rm Ar}_2^+ with electrons journal September 2011
Theory of Dissociative Recombination in Vibrationally Excited Gases journal September 1969
Dissociative recombination at elevated temperatures. II. Comparison between theory and experiment in neon and argon afterglows journal November 1972
Modeling of atmospheric-pressure plasma columns sustained by surface waves journal January 2007
Dissociation of Xe 2 + molecular ions by electrons in plasma journal September 1991
Dissociative recombination of molecular ions in noble-gas plasmas journal January 1992
A two-dimensional Plasimo multiphysics model for the plasma–electromagnetic interaction in surface wave discharges: the surfatron source journal August 2012
Argon metastable production in argon-helium microplasmas journal June 2016
Numerical Investigation of the Surface Wave Formation in a Microwave Plasma Torch journal November 2017
Preliminary study on similarity of glow discharges in scale-down gaps journal January 2013
Research on Similarity Law of Glow Discharge in Argon at Low Pressure by Numerical Simulation journal June 2014
Cathode fall thickness of abnormal glow discharges between parallel-plane electrodes in different radii at low pressure journal February 2015
Scaling laws for gas breakdown for nanoscale to microscale gaps at atmospheric pressure journal June 2016
Modeling of microplasmas from GHz to THz journal August 2015
Principles of Plasma Discharges and Materials Processing book January 2005
Dissociative recombination of molecular ions in noble-gas plasmas [Dissotsiativnaya rekombinatsiya molekulyarnykh ionov v plazme inertnykh gazov] journal January 1992

Cited By (1)

Kinetic Modelling of Atmospheric Pressure Corona Discharges in Humid Air journal July 2019

Similar Records

Excited level populations and excitation kinetics of nonequilibrium ionizing argon discharge plasma of atmospheric pressure
Journal Article · Wed Apr 15 00:00:00 EDT 2009 · Physics of Plasmas · OSTI ID:1540166

Element- and charge-state-resolved ion energies in the cathodic arc plasma from composite AlCr cathodes in argon, nitrogen and oxygen atmospheres
Journal Article · Mon Jun 01 00:00:00 EDT 2015 · Surface and Coatings Technology · OSTI ID:1540166

Plasma kinetics in a nanosecond pulsed filamentary discharge sustained in Ar–H2O and H2 O
Journal Article · Fri Nov 16 00:00:00 EST 2018 · Journal of Physics. D, Applied Physics · OSTI ID:1540166