Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Nonlocal phenomena in the positive column of a medium-pressure glow discharge. / Bogdanov, E. A.; Kudryavtsev, A. A.; Tsendin, L. D.; Arslanbekov, R. R.; Kolobov, V. I.
в: Technical Physics, Том 49, № 7, 01.07.2004, стр. 849-857.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Nonlocal phenomena in the positive column of a medium-pressure glow discharge
AU - Bogdanov, E. A.
AU - Kudryavtsev, A. A.
AU - Tsendin, L. D.
AU - Arslanbekov, R. R.
AU - Kolobov, V. I.
PY - 2004/7/1
Y1 - 2004/7/1
N2 - Commercial CFDRC software (http://www.cfdrc.com/∼cfdplasma) is used to self-consistently simulate the plasma of the positive column (PC) of a medium-pressure 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 not only at relatively low pressures (pR < 1 cm Torr), but also at relatively high pressures (pR < 10 cm Torr), i.e., under the real conditions of a diffuse PC usually met in practice. The use of the local approximation in solving the kinetic equation for electrons leads to significant errors in determining the main parameters of the PC. A paradoxical effect has been revealed: the peaks of the profiles of the excitation rates shift from the discharge axis toward the periphery as the pressure increases from low to medium values (1 cm Torr
AB - Commercial CFDRC software (http://www.cfdrc.com/∼cfdplasma) is used to self-consistently simulate the plasma of the positive column (PC) of a medium-pressure 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 not only at relatively low pressures (pR < 1 cm Torr), but also at relatively high pressures (pR < 10 cm Torr), i.e., under the real conditions of a diffuse PC usually met in practice. The use of the local approximation in solving the kinetic equation for electrons leads to significant errors in determining the main parameters of the PC. A paradoxical effect has been revealed: the peaks of the profiles of the excitation rates shift from the discharge axis toward the periphery as the pressure increases from low to medium values (1 cm Torr
UR - http://www.scopus.com/inward/record.url?scp=4544248612&partnerID=8YFLogxK
U2 - 10.1134/1.1778858
DO - 10.1134/1.1778858
M3 - Article
AN - SCOPUS:4544248612
VL - 49
SP - 849
EP - 857
JO - Technical Physics
JF - Technical Physics
SN - 1063-7842
IS - 7
ER -
ID: 42903561