Bethe Ridge

"Bethe Ridge" is a tail-like peak (ridge) which appears in the expression of energy loss against scattering angle, E(θ) for the collision between incident electrons and quasi-free electrons in a solid. Taking account of a similar phenomenon in the case of X-ray scattering, Bethe Ridge is also called "Compton peak." In a treatment of classical dynamics, the position of Bethe Ridge is expressed as E/E₀～sin2θ,where E₀ is the energy of incident electrons. Bethe Ridge is observed by taking angle-resolved EELS spectra.