A beam of gamma radiation having
photon energy of 510 KeV is
incident on a foil of Al. The
wavelength of radiation at 90
degree angle is ?
Answers
The wavelength of radiation at a 90° angle is 24.31nm
Explanation:
A beam of monochromatic light of wavelength \lambda (or equivalently, of frequency f) can be seen either as a classical wave or as a collection of photons that travel in a vacuum with one speed, c (the speed of light), and all carrying the same energy, {E}_{f}=hf. This idea proved useful for explaining the interactions of light with particles of matter.
Momentum of a Photon
Compton scattering is the main focus of this experiment, but it is necessary to understand the interactions of high energy, electromagnetic photon radiation with materials in general. Gamma rays are high energy photons emitted from radioactive sources. When they interact with matter, there are three primary ways their energies can be absorbed by materials.
λ=\frac{hc}{meC} (1-cosθ)
λ = \frac{12400}{510} (1-cos 90°)