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The influence of metastable atoms and the effect of the nonlocal character of the electron distribution on the characteristics of the positive column in an argon discharge. / Bogdanov, E. A.; Kudryavtsev, A. A.; Tsendin, L. D.; Arslanbekov, R. R.; Kolobov, V. I.; Kudryavtsev, V. V.
в: Technical Physics, Том 49, № 6, 01.06.2004, стр. 698-706.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - The influence of metastable atoms and the effect of the nonlocal character of the electron distribution on the characteristics of the positive column in an argon discharge
AU - Bogdanov, E. A.
AU - Kudryavtsev, A. A.
AU - Tsendin, L. D.
AU - Arslanbekov, R. R.
AU - Kolobov, V. I.
AU - Kudryavtsev, V. V.
PY - 2004/6/1
Y1 - 2004/6/1
N2 - Commercial CFDRC software (http://www.cfdrc.com/~cfdplasma) is used to self-consistently simulate the plasma of the positive column (PC) of a dc discharge in argon. The software allows simulations in an arbitrary 3D geometry by using Poisson's equation for the electric potential and fluid equations for the heavy components and by solving a nonlocal kinetic equation for electrons. It is shown that, in calculating the electron distribution function, the local approximation is almost always inapplicable under real conditions of a diffuse PC usually met in practice (pR < (5-10) cm Torr). The influence of metastable atoms, which can substantially affect the parameters of the PC plasma, is considered. It is shown that superelasic collisions play an important role in enriching the fast component of the electron distribution function and that the Penning ionization can result in an ascending volt-ampere characteristic of the positive column.
AB - Commercial CFDRC software (http://www.cfdrc.com/~cfdplasma) is used to self-consistently simulate the plasma of the positive column (PC) of a dc discharge in argon. The software allows simulations in an arbitrary 3D geometry by using Poisson's equation for the electric potential and fluid equations for the heavy components and by solving a nonlocal kinetic equation for electrons. It is shown that, in calculating the electron distribution function, the local approximation is almost always inapplicable under real conditions of a diffuse PC usually met in practice (pR < (5-10) cm Torr). The influence of metastable atoms, which can substantially affect the parameters of the PC plasma, is considered. It is shown that superelasic collisions play an important role in enriching the fast component of the electron distribution function and that the Penning ionization can result in an ascending volt-ampere characteristic of the positive column.
UR - http://www.scopus.com/inward/record.url?scp=3042807069&partnerID=8YFLogxK
U2 - 10.1134/1.1767877
DO - 10.1134/1.1767877
M3 - Article
AN - SCOPUS:3042807069
VL - 49
SP - 698
EP - 706
JO - Technical Physics
JF - Technical Physics
SN - 1063-7842
IS - 6
ER -
ID: 42903421