1403/03/07
تقی محسن پور

تقی محسن پور

مرتبه علمی: دانشیار
ارکید:
تحصیلات: دکترای تخصصی
اسکاپوس:
دانشکده: دانشکده علوم پایه
نشانی:
تلفن: 01135302480

مشخصات پژوهش

عنوان
Investigation of self-focusing a Gaussian laser pulse in a weakly relativistic and ponderomotive regime inside a collisionless warm quantum plasma
نوع پژوهش
مقاله چاپ شده
کلیدواژه‌ها
Quantum plasma, Spot-size, Ponderomotive, Relativistic, Self-focusing
سال 1400
مجله CHINESE JOURNAL OF PHYSICS
شناسه DOI
پژوهشگران داود اصغرنژاد ، تقی محسن پور ، سعید میرزانژاد

چکیده

This article investigates nonlinear self-focusing of an intense right hand circularly polarized Gaussian profile laser pulse in a weakly relativistic and ponderomotive regime inside a collisionless and unmagnetized warm quantum plasma. The nonlinear propagation equation for laser pulse in plasma has been derived. Then, the evolution differential equation for laser spot-size was obtained with considering the parabolic equation approach under the Wentzel-Kramers-Brillouin and paraxial ray approximations. This differential equation was solved numerically by fourthorder Runge-Kutta method. It is shown that our solution confirms the results of the selffocusing of the laser pulse in a weakly relativistic ponderomotive regime in cold quantum plasma in extreme conditions. Numerical results indicate that self-focusing of the laser pulse in the presence of relativistic and ponderomotive nonlinearity inside warm quantum plasma is improved in comparison with relativistic and ponderomotive cold quantum plasma.