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Nonlocal Behavior of Electron Fluxes and Excitation Rates for “Local” EEDF in Moderate and High Pressures DC Positive Column Plasmas

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4 Author(s)
Chirtsov, A.S. ; Fac. of Phys., St. Petersburg State Univ., St. Petersburg, Russia ; Kapustin, K.D. ; Kudryavtsev, A.A. ; Bogdanov, E.A.

Kinetic simulations of a direct-current positive-column Ar plasma revealed that electron fluxes are sensitive to energy dependence of an elastic collision cross section. Paradoxical behavior of the electron flux in a coordinate-energy phase space is presented. The direction of the electron flux at the “elastic” energy region (5-10 eV) in whole volume, except the region near the wall, turned out to be oppositely directed to that conventionally assumed.

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Plasma Science, IEEE Transactions on  (Volume:39 ,  Issue: 11 )