Ionization instability in non-equilibrium MHD generators

✍ Scribed by M.S. Sodha; S.C. Kaushik; R.P. Sharma; B.K. Gupta; B.K. Sawhney

• Publisher: Elsevier Science
• Year: 1977
• Weight: 428 KB
• Volume: 16
• Category: Article
• ISSN: 0013-7480
• DOI: 10.1016/0013-7480(77)90025-0

✦ Synopsis

In the present paper we have investigated the growth rate of ionization instability taking into account the temperature/velocity dependence of collision frequency by using the phenomenological and semi-kinetic approach. For the semi-kinetic treatment, the Boltzmann Transfer Equation (BTE) has been used taking into account the velocity dependence of collision frequency. The electron collision frequency is assumed to be a power law function of the electron temperature or velocity. The exponent governs the behaviour of the scattering mechanism. In both cases the dependence of electron collision frequency on electron temperature/velocity has a stabilizing effect on the growth rate of ionization instability in weakly ionized plasmas of interest in MHD generators.

Ionization instability Temperature/velocity Dependance Collision frequency Growth rate