09 بهمن 1401
تقي محسن پور

تقی محسن پور

مرتبه علمی: دانشیار
نشانی: گروه فیزیک دانشگاه مازندران
تحصیلات: دکترای تخصصی / فیزیک پلاسما
تلفن: 01135302480
دانشکده: دانشکده علوم پایه

مشخصات پژوهش

عنوان Effects of axial magnetic field and nonextensivity on small amplitude dust acoustic solitary waves in dusty plasma
نوع پژوهش مقاله چاپ شده
کلیدواژه‌ها
solitons - acoustic - dusty - plasma
مجله CONTRIBUTIONS TO PLASMA PHYSICS
شناسه DOI https://doi.org/10.1002/ctpp.201800089
پژوهشگران زهرا رضایی نیا (نفر اول) ، تقی محسن پور (نفر دوم) ، سعید میرزانژاد (نفر سوم)

چکیده

The nonlinear propagation of small amplitude dust-acoustic (DA) solitary waves in magnetized dusty plasma consisting of negatively charged mobile dust fluid, and Boltzmann-distributed electrons and ions with two distinct temperatures following a q-nonextensive distribution are investigated. In this article, a number of nonlinear equations, namely, the Korteweg–de-Vries (K-dV) equations, have been derived by employing the reductive perturbation technique that is valid for a small but finite amplitude limit. The effects of nonextensivity of ions with two distinct temperatures and dust concentration on the amplitude and width of DA solitary waves are investigated theoretically. It is observed that both the nonextensive and low-temperatures ions significantly modify the basic properties and polarities of DA solitary waves. It is shown that both positive and negative potential DA solitons occur in this case. The implications of these results to some astrophysical environments and space plasmas (e.g., stellar polytropes, peculiar velocity distributions of galaxies, and collisionless thermal plasma), and laboratory dusty plasma systems are briefly mentioned.