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Simple model of reduced electric field in ambipolar regime of dc discharge positive column in hydrogen

Published online by Cambridge University Press:  04 February 2015

V. A. Lisovskiy ,
E. P. Artushenko  and
V. D. Yegorenkov
V. A. Lisovskiy*
Affiliation:
Kharkov National University, 61022, Kharkov, Svobody Sq. 4, Ukraine Scientific Center of Physical Technologies, Kharkov, 61022, Svobody Sq. 6, Ukraine
E. P. Artushenko
Affiliation:
Kharkov National University, 61022, Kharkov, Svobody Sq. 4, Ukraine Scientific Center of Physical Technologies, Kharkov, 61022, Svobody Sq. 6, Ukraine
V. D. Yegorenkov
Affiliation:
Kharkov National University, 61022, Kharkov, Svobody Sq. 4, Ukraine
*
†Email address for correspondence: lisovskiy@yahoo.com
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Abstract

We studied the positive column of the dc discharge through analytical modeling. We considered the ambipolar regime when the balance of charged particles is determined only by direct ionization of molecules by electrons and ambipolar escape of them to the discharge chamber walls. The approximation chosen permitted us to solve the balance equation and to obtain simple formulas for the reduced electric field. Our calculation data for the positive column in hydrogen agree well with experimental and theoretical data of other authors.

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Type
Research Article
Information
Journal of Plasma Physics , Volume 81 , Issue 3 , June 2015 , 905810312
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Copyright © Cambridge University Press 2015 

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