Tuesday, February 07, 2006
Compton effect - definition - quantum physics, particle physics, special relativity
Definition: The elastic scattering of photons by electrons. If λs and λi are respectively the wavelengths associated with scattered and incident photons, the Compton shift is given by λs-λi = λ0(1-cos θ) where θ is the angle between the directions of the incident and scattered photons and λ0 is the Compton wavelength (λ0=0.00243 nm) of the electron. The effect is only significant for incident X-ray and γ-ray photons.