# Difference between revisions of "Calculation of radiation yield"

The number of photons per MeV per incident electron per of radiator (Z,A) is given by [*]:

,

where - photon kinetic energy in MeV;

- incident electron total energy (in units of the electron rest mass);

- incident photon energy (in units of the electron rest mass);

Calculation of

;

;

;

;

;

;

;

Case A: For the screening effect is negligible, (free electron form) and in this case .

Case B: For we have

Calculation of

1.a , :

- screening functions;

, for ;

, for ;

1.b , :

2.

,

, when

Reference: [*] J.L. Matthews, R.O. Owens, Accurate Formulae For the Calculation of High Energy Electron Bremsstrahlung Spectra, NIM III (1973) I57-I68.