Compton Scattering Calculator — Formula
## Compton Scattering
When a photon scatters off a free electron, its wavelength increases. The shift depends only on the scattering angle.
### Formula
**delta_lambda = lambda_C * (1 - cos theta)**
where lambda_C = h / (m_e c) = 2.426 pm is the Compton wavelength of the electron.
Maximum shift (2 lambda_C = 4.85 pm) occurs at 180 degrees (backscattering).
When a photon scatters off a free electron, its wavelength increases. The shift depends only on the scattering angle.
### Formula
**delta_lambda = lambda_C * (1 - cos theta)**
where lambda_C = h / (m_e c) = 2.426 pm is the Compton wavelength of the electron.
Maximum shift (2 lambda_C = 4.85 pm) occurs at 180 degrees (backscattering).
Esempio Risolto
Photon scattered at 90 degrees.
- delta_lambda = lambda_C * (1 - cos 90)
- lambda_C = 6.626e-34 / (9.109e-31 * 2.998e8) = 2.426e-12 m
- cos(90) = 0
- delta_lambda = 2.426e-12 * (1 - 0) = 2.426 pm