Continuous Absorption by the Carbon Negative Ion

Abstract

The bound-free absorption coefficients for C− are calculated, over a wide range of photon energies, in the dipole length and dipole velocity formulations, using Hartree–Fock bound state wave functions and central field continuum functions, taking into account orthogonalization and ( a ) polarization or ( b ) exchange. The final results obtained by method ( b ) show qualitative agreement with experimental results where available, except in the region very close to threshold.