Radiation pressure by electron cyclotron waves on density fluctuations

The presence of turbulence in the form large density fluctuations and coherent filamentary structures edge region fusion plasmas has been well documented. Radio frequency waves, launched from near wall a tokamak, have to propagate through this turbulent plasma before reaching core. These can reflect, refract, diffract electromagnetic thereby modifying flow energy momentum core plasma. Conversely, radiation pressure radio waves modify turbulence, whether it is or This article examines some consequences force induced by electron cyclotron plasmas. effect on two different representations are studied. In first representation, suitable for both plasmas, assumed that planar interface separates regimes. physics basis an separating scalar dielectric media was elucidated Poynting 1905 [J. H. Poynting, London, Edinburgh, Dublin Philosophical Magazine Journal Science 9 , 393-406 (1905)]. Poynting’s results explained within context Snell’s law Fresnel equations, and, subsequently, extended magnetized analysis shows lead peaking profile – pushed towards higher density. approximation Kirchhoff theory [P. Beckmann A. Spizzichino, Scattering Electromagnetic Waves Rough Surfaces (Artech, Massachusetts, 1987) Chapter 3] used study wave scattering media. second appropriate cylindrical filament embedded background determined using Maxwell stress tensor. A detailed reveals filaments those with densities than pulled source launching while lower away. reaction enough be observed experimentally.