THE INFLUENCE OF AMBIPOLAR ELECTRIC FIELD ON THE EDF FORMATION AND THE ELECTRON PROCESSES IN PARTIALLY IONIZED PLASMAS. / Krasilnikov, Mikhail B.; Kudryavtsev, Anatoly A.
2015. Abstract from ICOPS 2015. The 42nd IEEE International Conference on Plasma Science, Belek, Turkey.Research output: Contribution to conference › Abstract › peer-review
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TY - CONF
T1 - THE INFLUENCE OF AMBIPOLAR ELECTRIC FIELD ON THE EDF FORMATION AND THE ELECTRON PROCESSES IN PARTIALLY IONIZED PLASMAS
AU - Krasilnikov, Mikhail B.
AU - Kudryavtsev, Anatoly A.
PY - 2015
Y1 - 2015
N2 - he local approximation for EDF is widely used for the obtaining plasma characteristics with participation of electrons. This means that the terms corresponding to spatial gradients and to the ambipolar field can be omitted in the Boltzmann equation and EDF can be factorized as the product of the electron density, which depends on the spatial coordinates and time, and the EDF depending on the local electric field strength at a given point (see f.e. [1]). Accordingly, the characteristics for the different electron processes also depend on local electric field. On the other hand, the kinetic equation contains total electric field at a given point. In other words, electrons "feel" total electric field which is sum of heating, ambipolar, high-frequency electric fields, etc. This means that when ambipolar field exceeds the heating one, applicability of the local approximation for EDF seems to be ambiguously. In present work analysis of applicability criteria of the local approximation for EDF has been proce
AB - he local approximation for EDF is widely used for the obtaining plasma characteristics with participation of electrons. This means that the terms corresponding to spatial gradients and to the ambipolar field can be omitted in the Boltzmann equation and EDF can be factorized as the product of the electron density, which depends on the spatial coordinates and time, and the EDF depending on the local electric field strength at a given point (see f.e. [1]). Accordingly, the characteristics for the different electron processes also depend on local electric field. On the other hand, the kinetic equation contains total electric field at a given point. In other words, electrons "feel" total electric field which is sum of heating, ambipolar, high-frequency electric fields, etc. This means that when ambipolar field exceeds the heating one, applicability of the local approximation for EDF seems to be ambiguously. In present work analysis of applicability criteria of the local approximation for EDF has been proce
KW - Ambipolar electric field
M3 - тезисы
Y2 - 23 May 2015 through 27 May 2015
ER -
ID: 6939691