In: Physics
An electron is slowed down quickly from 107 m/s to 0.5 * 107 m/s, and a single photon is created in the process. Identify the radiation process (eg. Compton, positron emission, etc.) and compute the frequency and wavelength of the emitted photon.
As electron is a charged particle and it is slowed down from
to
, so, it is decelerated.
And we know that when a charged particle is slowed down by
deceleration it radiates energy in the form of photons by
Bremsstrahlung or in other words, braking radiation.
The change in the energy is
And as
and the mass of the electron is
, so, the change in the energy is
And from energy conservation, this energy is converted to the
created photon energy. So, the frequency of the photon is
And the wavelength of the emitted photon is