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Title: Investigation of the short argon arc with hot anode. II. Analytical model

Abstract

A short atmospheric pressure argon arc is studied numerically and analytically. In a short arc with an inter-electrode gap of several millimeters, non-equilibrium effects in plasma play an important role in operation of the arc. High anode temperature leads to electron emission and intensive radiation from its surface. A complete, self-consistent analytical model of the whole arc comprising of models for near-electrode regions, arc column, and a model of heat transfer in cylindrical electrodes was developed. The model predicts the width of non-equilibrium layers and arc column, voltages and plasma profiles in these regions, and heat and ion fluxes to the electrodes. Parametric studies of the arc have been performed for a range of the arc current densities, inter-electrode gap widths, and gas pressures. The model was validated against experimental data and verified by comparison with numerical solution. In conclusion, good agreement between the analytical model and simulations and reasonable agreement with experimental data were obtained.

Authors:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [2];  [1]
+ Show Author Affiliations
  1. Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
  2. Keiser Univ., Fort Lauderdale, FL (United States)
Publication Date:
Research Org.:
Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Fusion Energy Sciences (FES)
OSTI Identifier:
1419799
Alternate Identifier(s):
OSTI ID: 1417714
Grant/Contract Number:  
AC02-09CH11466
Resource Type:
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 25; Journal Issue: 1; Journal ID: ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Khrabry, A., Kaganovich, I. D., Nemchinsky, V., and Khodak, A. Investigation of the short argon arc with hot anode. II. Analytical model. United States: N. p., 2018. Web. doi:10.1063/1.5007084.
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Khrabry, A., Kaganovich, I. D., Nemchinsky, V., & Khodak, A. Investigation of the short argon arc with hot anode. II. Analytical model. United States. https://doi.org/10.1063/1.5007084
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Khrabry, A., Kaganovich, I. D., Nemchinsky, V., and Khodak, A. Mon . "Investigation of the short argon arc with hot anode. II. Analytical model". United States. https://doi.org/10.1063/1.5007084. https://www.osti.gov/servlets/purl/1419799.
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@article{osti_1419799,
title = {Investigation of the short argon arc with hot anode. II. Analytical model},
author = {Khrabry, A. and Kaganovich, I. D. and Nemchinsky, V. and Khodak, A.},
abstractNote = {A short atmospheric pressure argon arc is studied numerically and analytically. In a short arc with an inter-electrode gap of several millimeters, non-equilibrium effects in plasma play an important role in operation of the arc. High anode temperature leads to electron emission and intensive radiation from its surface. A complete, self-consistent analytical model of the whole arc comprising of models for near-electrode regions, arc column, and a model of heat transfer in cylindrical electrodes was developed. The model predicts the width of non-equilibrium layers and arc column, voltages and plasma profiles in these regions, and heat and ion fluxes to the electrodes. Parametric studies of the arc have been performed for a range of the arc current densities, inter-electrode gap widths, and gas pressures. The model was validated against experimental data and verified by comparison with numerical solution. In conclusion, good agreement between the analytical model and simulations and reasonable agreement with experimental data were obtained.},
doi = {10.1063/1.5007084},
journal = {Physics of Plasmas},
number = 1,
volume = 25,
place = {United States},
year = {Mon Jan 22 00:00:00 EST 2018},
month = {Mon Jan 22 00:00:00 EST 2018}
}
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https://doi.org/10.1063/1.5007084
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Works referenced in this record:

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Investigation of the short argon arc with hot anode. I. Numerical simulations of non-equilibrium effects in the near-electrode regions
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    Works referencing / citing this record:

    Investigation of the short argon arc with hot anode. I. Numerical simulations of non-equilibrium effects in the near-electrode regions
    journal, January 2018

    • Khrabry, A.; Kaganovich, I. D.; Nemchinsky, V.
    • Physics of Plasmas, Vol. 25, Issue 1
    • DOI: 10.1063/1.5007082

    Model for the operation of an emissive cathode in a large magnetized-plasma
    journal, February 2019

    Features of the arc binding region structure on the surface of the thoriated cathode in atmospheric pressured argon
    journal, February 2020

    • Sargsyan, M. A.; Tereshonok, D. V.; Valyano, G. E.
    • Physics of Plasmas, Vol. 27, Issue 2
    • DOI: 10.1063/1.5142800

    Multispecies plasma fluid simulation for carbon arc discharge
    journal, January 2019

    Modeling the physics of interaction of high-pressure arcs with their electrodes: advances and challenges
    journal, October 2019

    Simulation of electron streamline distribution and coupling voltage in the coupling area of a Hall thruster
    journal, March 2019

    • Meng, Tianhang; Ning, Zhongxi; Eliseev, Stepan
    • Plasma Sources Science and Technology, Vol. 28, Issue 3
    • DOI: 10.1088/1361-6595/ab019b

    Synthesis of nanoparticles in carbon arc: measurements and modeling
    journal, May 2018

    • Yatom, Shurik; Khrabry, Alexander; Mitrani, James
    • MRS Communications, Vol. 8, Issue 03
    • DOI: 10.1557/mrc.2018.91
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