Searched refs:Fz (Results 1 – 2 of 2) sorted by relevance
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135 PetscReal Fz = (1 + 1.198 * Z + 0.222 * Z * Z) / (1 + 2.966 * Z + 0.753 * Z * Z), eta; in Spitzer() local136 …eta = Fz * 4. / 3. * PetscSqrtReal(2. * PETSC_PI) * Z * PetscSqrtReal(m_e) * PetscSqr(e) … in Spitzer()