TY - JOUR

T1 - The influence of ambipolar electric field on the EDF formation and the electron processes in low temperature plasmas

AU - Krasilnikov, MB

AU - Kudryavtsev, AA

PY - 2015

Y1 - 2015

N2 - The local approximation is usually used for the electron distribution function (EDF) calculation, which is the most important plasma characteristic. This application greatly simplifies solving the Boltzmann kinetic equation and it is base of the widely used fluid model for plasma modeling. It is shown that at the plasma periphery local approximation is not valid even at high gas pressure because the ambipolar electric field practically always is larger than heating electric field. As a result, the applicability of local approximation for EDF depends on ratio between heating and ambipolar electric fields.

AB - The local approximation is usually used for the electron distribution function (EDF) calculation, which is the most important plasma characteristic. This application greatly simplifies solving the Boltzmann kinetic equation and it is base of the widely used fluid model for plasma modeling. It is shown that at the plasma periphery local approximation is not valid even at high gas pressure because the ambipolar electric field practically always is larger than heating electric field. As a result, the applicability of local approximation for EDF depends on ratio between heating and ambipolar electric fields.

KW - ambipolar electric field

KW - local EDF

M3 - Article

JO - IEEE Transactions on Plasma Science

JF - IEEE Transactions on Plasma Science

SN - 0093-3813

ER -