All Problems

Thermal Radiation. Quantum Nature of Light.

Problem 5.284

A photon with energy \(\hbar \omega=1.00 \mathrm{MeV}\) is scattered by a stationary free electron. Find the kinetic energy of a Compton electron if the photon's wavelength changed by \(\eta=25 \%\) due to scattering.

Reveal Answer
T=ωη/(1+η)=0.20MeVT=\hbar \omega \eta /(1+\eta)=0.20 \mathrm{MeV}