Originally Posted by **Aryth** Well, it deals with Linear Accelerators.
We're dealing with energies between 6 and 25 MeV.
I just want to know the best way to find the range of electron velocities for the given energy range. |

Oh okay. The energy given is going to be the kinetic energy of the electrons, so

$\displaystyle K = (\gamma - 1)m_0c^2$

which leads to

$\displaystyle v = \left ( 1 - \frac{m^2c^4}{(K + mc^2)^2} \right ) c$

-Dan