The total radiative loss rate predicted by this equation exhibits drops proportional to gamma squared, with which namesake "steps" are associated; those steps are sudden increases in the equilibrium s
The total radiative loss rate predicted by this equation exhibits drops proportional to gamma squared, with which namesake "steps" are associated; those steps are sudden increases in the equilibrium spectrum of certain cosmic ray particles. Chao's experiments to test this equation, which seemed to find deviations in heavy elements, were later found to have been early evidence of pair production and annihilation. A primitive and incorrect form of this equation derived separately by Dirac and by Gordon omitted its final two terms since it neglected spin. This equation's classical precursor gives sigma as eight thirds pi times the square of quantity e squared over m c squared and was developed by J. J. Thomson. The differential form of this equation contains terms cubic, quadratic, and linear in the ratio of before and after photon energy. For 10 points, name this early result of quantum electrodynamics, which gives the differential cross section of photon scattering from a free electron.
The total radiative loss rate predicted by this equation exhibits drops proportional to gamma squared, with which namesake "steps" are associated; those steps are sudden increases in the equilibrium spectrum of certain cosmic ray particles.
{Klein}-{Nishina formula}