Suppression of Raman Scattering in Modulated Plasma With the Oblique Orientation of Density Ripples

The phenomenon of stimulated Raman scattering (SRS) is investigated in under-dense rippled plasma with the proposal of an oblique orientation of density ripples in plasma. The dispersion relation is derived using the fluid theory, and a specific case is examined for the coupling of higher phase velocity Langmuir wave to lower phase velocity Langmuir wave generated due to stationary rippled electro...