نتایج جستجو برای: plasma interaction
تعداد نتایج: 900187 فیلتر نتایج به سال:
In this paper, a free-electron laser (FEL) growth rate with a laser wiggler in which plasma background is used to generate short wavelengths in x-ray regimes, has been investigated theoretically. A linearly polarized laser pulse, due to having short wiggler periods (inrange) is able to produce coherent radiations in x-ray regions and can be applied as a planar wiggler in a FEL. Phase velocity o...
A model is presented that describes the interaction of electrons with both longitudinal and transverse waves in a cold plasma. Starting from the Lagrangian for the system of fields, background plasma, and particles, a finite dimensional self-consistent model is derived using the envelope approximation for the waves. The ~squared! wave amplitudes and phases form action-angle variables in the clo...
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We address here mathematical models related to the Laser-Plasma Interaction. After a simplified introduction to the physical background concerning the modelling of the laser propagation and its interaction with a plasma, we recall some classical results about the geometrical optics in plasmas. Then we deal with the well known paraxial approximation of the solution of the Maxwell equation; we st...
The Kompaneets theory of photon kinetic evolution due to the Compton effect in the absence of absorption and emission is extended to the case of the Vlasov plasma wave oscillations. Under the assumption that the electron distribution function at equilibrium is perturbed by a solution of the linearised Vlasov equation in the long-wavelength limit, a solution of the Kompaneets kinetic equation fo...
Human plasma low density lipoproteins (LDL) and high density lipoproteins (HDL) were radioiodinated and their interaction with washed human platelets was assessed. Both ligands were bound by the platelet at 37 degrees C, and an apparent equilibrium was attained within two hours. Minimal binding was observed at 22 degrees C or 4 degrees C. The specificity of these interactions was indicated by t...
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