Spatiotemporal evolution of high-power relativistic laser pulses in electron-positron-ion plasmas.
نویسندگان
چکیده
The spatiotemporal pulse dynamics of a high-power relativistic laser pulse interacting with an electron-positron-ion plasmas is investigated theoretically and numerically. The occurrence of pulse compression is studied. The dependence of the mechanism on the concentration of the background ions in electron positron plasma is emphasized.
منابع مشابه
اثر کانال یونی بر خودکانونی شدن پالس لیزری گاؤسی در پلاسماهای کم چگال
We have considered the self-focusing of a Gaussian laser pulse in unmagnetized plasma. High-intensity electromagnetic fields cause the variation of electron density in plasma. These changes in the special conditions cause the acceleration of electrons to the higher energy and velocities. Thus the equation of plasma density evolution was obtained considering the electrons ponderomotive force. T...
متن کاملParticle-in-cell simulations of high energy electron production by intense laser pulses in underdense plasmas
The propagation of intense laser pulses and the generation of high energy electrons from the underdense plasmas are investigated using two dimensional particlein-cell simulations. When the ratio of the laser power and a critical power of relativistic self-focusing is the optimal value, it propagates stably and electrons have maximum energies.
متن کاملشبیهسازی ذره‌ای شتاب دادن الکترون‌ها در پلاسمای کم چگال
One of the interesting Laser-Plasma phenomena, when the laser power is high and ultra intense, is the generation of large amplitude plasma waves (Wakefield) and electron acceleration. An intense electromagnetic laser pulse can create plasma oscillations through the action of the nonlinear pondermotive force. electrons trapped in the wake can be accelerated to high energies, more than 1 TW. Of t...
متن کاملRelativistic laser–plasma interactions
By focusing petawatt peak power laser light to intensities up to 1021 W cm−2, highly relativistic plasmas can now be studied. The force exerted by light pulses with this extreme intensity has been used to accelerate beams of electrons and protons to energies of a million volts in distances of only microns. This acceleration gradient is a thousand times greater than in radio-frequency-based acce...
متن کاملNon-local gyrokinetic model of linear ion-temperature-gradient modes
Related Articles Resonant wave-particle interactions modified by intrinsic Alfvénic turbulence Phys. Plasmas 19, 082902 (2012) Parametric decays in relativistic magnetized electron-positron plasmas with relativistic temperatures Phys. Plasmas 19, 082104 (2012) Electromagnetic fluctuation spectrum associated with the drift Alfvén-cyclotron instability Phys. Plasmas 19, 072318 (2012) Magnetic isl...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Physical review. E, Statistical, nonlinear, and soft matter physics
دوره 82 1 Pt 2 شماره
صفحات -
تاریخ انتشار 2010