Compton wavelength
Quantum mechanical property of particles / From Wikipedia, the free encyclopedia
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The Compton wavelength is a quantum mechanical property of a particle, defined as the wavelength of a photon the energy of which is the same as the rest energy of that particle (see mass–energy equivalence). It was introduced by Arthur Compton in 1923 in his explanation of the scattering of photons by electrons (a process known as Compton scattering).
The standard Compton wavelength λ of a particle of mass is given by
where h is the Planck constant and c is the speed of light. The corresponding frequency f is given by
and the angular frequency ω is given by
The CODATA 2018 value for the Compton wavelength of the electron is 2.42631023867(73)×10−12 m.[1] Other particles have different Compton wavelengths.