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
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.
پژوهشگران	سعید میرزانژاد (نفر سوم)، داود اصغرنژاد (نفر اول)، تقی محسن پور (نفر دوم)