Effect Of Ionic Temperature Research Articles

Influence of ionic temperature on the acoustic dressed soliton in plasma with Maxwellian positrons

The dressed solitary ion waves in a collisionless unmagnetized plasma composed warm fluid of ion and Boltzmann distributed electrons and positrons are studied. For nonlinear ion acoustic waves, a reductive perturbation method is applied to deduce the KdV equation in terms of first order potential. When soliton amplitude is enlarged, the shape of the wave sidetracks from KdV equation. To improve the soliton shape, the perturbed KdV equation is obtained. The effects of ionic temperature on the electrostatic dressed soliton structures are also discussed.

Effect of Ionic Temperature on Ion-Acoustic Solitons in a Two-Electron–Temperature Plasma with Adiabatic Positive and Negative Ions and Isothermal Electrons

Ion-acoustic Solitons in a collisionless two-electron-temperature plasma with adiabatic positive and negative ions with equal ion temperature and isothermal electrons are studied by using the reductive perturbation method. The basic set of fluid equations are reduced for fast ion-acoustic wave to the Korteweg-de Vries and modified Korteweg-de Vries equation and for slow ion-acoustic wave to the Korteweg-de Vries equation and solutions of these equations are obtained. The effect of ionic temperature, negative ions and small concentration of a cooler electron component on the amplitude and width of fast and slow ion-acoustic solitons is investigated.

Effect of ionic temperature on ion-acoustic solitons in a two-ion warm plasma consisting of negative ions and non-isothermal electrons

The effect of ionic temperature on ion-acoustic solitons in a warm, two-ion plasma consisting of negative ions and non-isothermal electrons are studied by using the reductive perturbation method. The basic set of fluid equations are reduced for fast ion-acoustic waves and slow ion-acoustic waves to the modified Korteweg-de Vries equation. A stationary solution of this modified Korteweg-de Vries equation is obtained and the effect of ionic temperature on ion-acoustic solitons is investigated.

Effect of ionic temperature on the modulational instability of ion acoustic waves in the presence of a magnetic field

Abstract The modulational instability of ion acoustic waves is studied in the presence of a dc magnetic field, taking the ion temperature into account. It is well known that the instability sets in for wave numbers exceeding 1.47 k D when there is no magnetic field and the ion temperature is negligible. The instability behaviour, however, changes drastically when either the magnetic field is switched on or the ion temperature becomes important or both. In general three different regions emerge wherein the waves becomes modulationally unstable. The relative sizes of these regions change as the magnetic field, the angle of propagation and the ion temperature are varied.

Effect of ionic temperature on the modulational instability of ion acoustic waves in a collisionless plasma

Using the Krylov–Bogoliubov–Mitropolski method, the modulational instability of ion-acoustic waves in a collisionless plasma consisting of isothermal electrons and adiabatic ions is studied. It is found that with the inclusion of ion temperature the modulational instability sets in much earlier.

Effect of Resonant Electrons on Propagation of Nonlinear Electrostatic Drift Waves

A modified Korteweg-de Vries equation in a two-dimensional space comprising the externla magnetic field and the direction normal to a density gradient is derived for a plasma consisting of warm ion fluid (?i = 3) and nonisothermal electrons (?e > 1). The effect of ionic temperature and resonant electrons (both trapped and free electrons) on the amplitude and the width of the drift solitary wave is examined.

Effect of ionic temperature on the propagation of electrostatic drift waves

Considers the effect of ionic temperature on the propagation of electrostatic drift waves in a plasma consisting of a warm ion fluid and isothermal electrons. A fluid model of the plasma is used since all physical processes involving wave-particle interactions are neglected.

Effect of ionic temperature on propagation of ion-acoustic solitary waves in a collisionless plasma of warm-ion fluid and non-isothermal electrons

Using a perturbation technique, we derive Modified Korteweg—de Vries (MKdV) equations for a mixture of warm-ion fluid (γ i = 3) and hot and non-isothermal electrons (γ e> 1), (i) when deviations from isothermality are finite, and (ii) when deviations from isothermality are small. We obtain stationary solutions for these equations, and compare them with the corresponding solutions for a mixture of warm-ion fluid (γ i = 3) and hot, isothermal electrons (γ i = 1).