Evaluation of the energy distribution function @f$f_{RE}(\mathcal{E})@f$ of runaway electrons as function of the normalized momentum @f$p' = p/m_ec@f$. Here, @f$p'@f$ is the normalized momentum and @f$m_e@f$ and @f$c@f$ are the electron mass and the speed of light.
@param p Normalized momentum @f$p' = p/m_ec@f$ of a given electron in the simulation. @param fRE Computed value of the energy distribution function of runaway electrons. @param Eo Normalized energy @f$\mathcal{E}' = \sqrt{1 + p'}@f$ of the the electron with normalized momentum @f$p'@f$.
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| real(kind=rp), | intent(in) | :: | p |
FUNCTION fRE(p)
REAL(rp), INTENT(IN) :: p ! momentum in units of mc
REAL(rp) :: fRE
REAL(rp) :: Eo ! In units of mc^2
Eo = SQRT(p**2.0_rp + 1.0_rp)
fRE = fGamma(Eo,gamma_pdf_params%k,gamma_pdf_params%t*co)
END FUNCTION fRE