nu_D Function

  1. korc_collisions.f90
  2. korc_collisions
  3. nu_D

private function nu_D(params, v)

Arguments

Type IntentOptional AttributesName
type(KORC_PARAMS), intent(in) :: params
real(kind=rp), intent(in) :: v

Return Value real(kind=rp)


Contents

Source Code

nu_D

Source Code

  function nu_D(params,v)
    ! perpendicular diffusion (pitch angle scattering) collision frequency
    REAL(rp), INTENT(IN) 	:: v
    TYPE(KORC_PARAMS), INTENT(IN) 	:: params
      ! Normalised particle speed
    REAL(rp) 				:: nu_D
    REAL(rp) 				:: p

    p = v/SQRT(1.0_rp - v**2)
    nu_D = 2.0_rp*(CB_ee(v)+CB_ei(params,v))/p**2
  end function nu_D