Answer:
Explained
Explanation:
The minimum energy required by a photon to create a electron-positron pair must be equal to the sum of rest mass energies of both electron and positron.
therefore E= 2m_ec^2
=2×0.511 MeV
=1.02 MeV
Below this , the process would not occur. So, in the energy range of > 1.02 MeV
The most dominant process will be in pair production.
At the range of 200 KeV to 3 MeV, The most dominant Process is compton Scattering.
below 200 KeV , Photo electric effect is more dominant.
