The Effect of Temperature Perturbations on Collisional Plasma
نویسندگان
چکیده
Abstract-The influence of temperature perturbations on the propagation and stability of low frequency waves in a weakly collisional plasma is analyzed. Temperature oscillations in general reduce the stability of ion acoustic waves. It also tends to lower themagnitude of the critical current necessary for triggering the instability. In the case of drift waves its effect is to change the destabilizing role of electron-ion collisions in the isothermal model into a damping influence.
منابع مشابه
Fluid description of collisional current filamentation instability of a weakly ionized plasma in the presence of magnetic field
In this paper, the collisional filamentation instability of an electron beam-weakly magnetized and ionized plasma has been investigated in the presence of background plasma, using the fluid description. By describing the equilibrium configuration in the presence of binary collision terms between charged and neutral particles and using the local approximation method, the dispersion relation (DR)...
متن کاملInvestigation of Dust-Ion Acoustic Waves in a Magnetized Collisional Dusty Plasma with Kappa Distribution Function for Electrons
The propagation of arbitrary amplitude dust ion acoustic waves (DIAWs) in a magnetized collisional dusty plasma including hot electrons, with kappa velocity distribution for electrons, warm ions and dust particles has been studied. In the presence of immobile massive dust particulates, DIAWs have been investigated through the Sagdeev pseudo-potential method. It is demonstrated that the amplitud...
متن کاملمنحنی دما در پلاسمای فوق چگال اتلافی
In this paper, an investigation is undertaken to introduce a simple and effective mechanism of over-dense plasma. The collisional effects reduce the rate of the energy transmission. In the collisional dissipative plasma, dielectric coefficient is complex due to collision and the imaginary part of dielectric coefficient is related to the collision. Materials with complex dielectric coefficient,...
متن کاملLine Profiles of Ni-like Collisional XUV Laser Amplifiers: Particle Correlation Effects
We present a detailed analysis of the different processes that contribute to the spectral broadening of the Ni-like Ag XUV laser line, including the effects of particle correlations on the broadening due to the radiator motion (Doppler broadening). We consider two different regimes of collisional excitation pumping: the transient pumping for which ionic temperature is relatively low (the plasma...
متن کاملCompressible streaming instabilities in rotating thermal viscous objects
Abstract. We study electromagnetic streaming instabilities in thermal viscous regions of rotating astrophysical objects, such as, protostellar and protoplanetary magnetized accretion disks, molecular clouds, their cores, and elephant trunks. The obtained results can also be applied to any regions of interstellar medium, where different equilibrium velocities between charged species can arise. W...
متن کامل