The Nonlinear Debye-Onsager Relaxation Effect in Weakly Ionized Plasmas
نویسنده
چکیده
A weakly ionized plasma under the influence of a strong electric field is considered. Supposing a local Maxwellian distribution for the electron momenta the plasma is described by hydrodynamic equations for the pair distribution functions. These equations are solved and the relaxation field is calculated for an arbitrary field strength. It is found that the relaxation effect becomes lower with increasing strength of the electrical field.
منابع مشابه
Nonlinear Debye-Onsager-Relaxation-Effect
The quantum kinetic equation for charged particles in strong electric fields is used to derive the nonlinear particle flux. The relaxation field is calculated quantum mechanically up to any order in the applied field provided a given Maxwellian plasma. The classical limit is given in analytical form. In the range of weak fields the deformation of the screening cloud is responsible for the Debye...
متن کاملInterpolation formula for the electrical conductivity of nonideal plasmas
On the basis of a quantum-statistical approach to the electrical conductivity of nonideal plasmas we derive analytical results in the classical low-density regime, in the degenerate Born limit, and for the contribution of the Debye-Onsager relaxation effect. These explicit results are used to construct an improved interpolation formula of the electrical conductivity valid in a wide range of tem...
متن کاملA Hierarchy of Hydrodynamic
This paper is a continuation of a series of papers in which (quasi-) hydrodynamic models for plasmas are rigorously derived by means of asymptotic analysis. Here, the quasi-neutral limit (zero-Debye-length limit) in the drift-diiusion equations is performed in the two cases: weakly ionized plasmas and not weakly ionized plasmas. The model consists of the continuity equations for the electrons a...
متن کاملNonlinear relaxation field in charged systems under high electric fields
The influence of an external electric field on the current in charged systems is investigated. The results beyond linear response from the classical hierarchy of density matrices are compared with the results from quantum kinetic theory. It is found that even an infinitesimal friction with the background changes the results in a noncontinuous way. The kinetic theory yields a systematic treatmen...
متن کاملNon-linear charge reduction effect in strongly-coupled plasmas
The charge reduction effect, produced by the nonlinear Debye screening of high-Z charges occuring in strongly-coupled plasmas, is investigated. An analytic asymptotic expression is obtained for the charge reduction factor (fc) which determines the Debye-Hückel potential generated by a charged test particle. Its relevant parametric dependencies are analyzed and shown to predict a strong charge r...
متن کامل