03 خرداد 1403
عليرضا عبدي كيان

علیرضا عبدی کیان

مرتبه علمی: دانشیار
نشانی:
تحصیلات: دکترای تخصصی / فیزیک نظری (پلاسما)
تلفن:
دانشکده: دانشکده علوم پایه

مشخصات پژوهش

عنوان
The role of trapped electrons and charge dust fluctuation on dust-ion-acoustic solitary waves
نوع پژوهش مقاله چاپ شده
کلیدواژه‌ها
Dust-ion-acoustic; Solitary waves; Dust charge fluctuation; The Cairns–Gurevich distribution; The Schamel equation; GKdV equation; Reductive perturbation method
سال
2022
مجله Indian Journal of Physics
پژوهشگران علیرضا عبدی کیان

چکیده

In this paper, we have studied a dusty plasma system including the nonthermal trapped electrons with Cairns– Gurevich distribution, mobile ions, and charge fluctuation stationary dust grains. Using the reduction perturbation technique, we have obtained two various differential equations governing this model of plasma. These equations are the modified nonlinear differential equations so-called the Schamel equation and the generalized Korteweg–de Vries (GKDV) equation. Analytical solutions show that the solitary waves can propagate in mentioned dusty plasma. Dispersion and nonlinear coefficients obtained depend on the trapping parameter (v), a nonthermal electron parameter (b), the ion-toelectron temperature ratio (ri) and the Maxwellian distribution (a). Also, the combined effect of an electron trapping and dust charge fluctuation on the nonlinear equation governing on this model was investigated. It is found that the amplitude and the width of solitary wave depend on trapped parameter, dust charge fluctuation, strength of non-Maxwellian distribution and nonthermal parameter. We have presented some physical explanations that support our results. The results of this study can be used to investigate the stability, instability of space, laser plasma interaction and laboratory plasma waves in which particles are trapped.