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

Khrabry, A.; Kaganovich, I. D.; Nemchinsky, V.; Khodak, A.

doi:10.1063/1.5007084

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

Journal Article · Mon Jan 22 00:00:00 EST 2018 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.5007084· OSTI ID:1419799

^[1];

^[2]; Khodak, A. ^[1]

Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Keiser Univ., Fort Lauderdale, FL (United States)

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.

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Research Organization:: Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Fusion Energy Sciences (FES)

Grant/Contract Number:: AC02-09CH11466

OSTI ID:: 1419799

Alternate ID(s):: OSTI ID: 1417714

Journal Information:: Physics of Plasmas, Vol. 25, Issue 1; ISSN 1070-664X

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 26 works

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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 Khrabry, A.; Kaganovich, I. D.; Nemchinsky, V. Physics of Plasmas, Vol. 25, Issue 1 https://doi.org/10.1063/1.5007082	journal	January 2018
Model for the operation of an emissive cathode in a large magnetized-plasma Poulos, M. J. Physics of Plasmas, Vol. 26, Issue 2 https://doi.org/10.1063/1.5063596	journal	February 2019
Features of the arc binding region structure on the surface of the thoriated cathode in atmospheric pressured argon Sargsyan, M. A.; Tereshonok, D. V.; Valyano, G. E. Physics of Plasmas, Vol. 27, Issue 2 https://doi.org/10.1063/1.5142800	journal	February 2020
Multispecies plasma fluid simulation for carbon arc discharge Mansour, A. R.; Hara, K. Journal of Physics D: Applied Physics, Vol. 52, Issue 10 https://doi.org/10.1088/1361-6463/aaf945	journal	January 2019
Modeling the physics of interaction of high-pressure arcs with their electrodes: advances and challenges Benilov, M. S. Journal of Physics D: Applied Physics, Vol. 53, Issue 1 https://doi.org/10.1088/1361-6463/ab47be	journal	October 2019
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Synthesis of nanoparticles in carbon arc: measurements and modeling Yatom, Shurik; Khrabry, Alexander; Mitrani, James MRS Communications, Vol. 8, Issue 03 https://doi.org/10.1557/mrc.2018.91	journal	May 2018
Investigation of a short argon arc with hot anode. Part I: numerical simulations of non-equilibrium effects in the near-electrode regions Khrabry, A.; Kaganovich, I.; Nemchinsky, V. arXiv https://doi.org/10.48550/arxiv.1708.01301	text	January 2017

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