Sp. Xiang et Fw. Hong, THE IONIZATION RATE DURING THE DECOUPLING PERIOD IN A UNIVERSE WITH NONZERO COSMOLOGICAL CONSTANT, Astrophysics and space science, 253(1), 1997, pp. 87-95
Nonzero cosmological constant favours cosmological models with larger
Hubble constant. The evolution of ionization during decoupling period
in a universe with nonzero cosmological constant is computed by using
a corrected recombination coefficient. Also presented in this paper is
the redshift distribution of the last scattering surfaces of the cosm
ic background photons while the cosmological constant is nonvanishing.
Finally, we give a brief estimation about the influence of H-e on the
last scattering surfaces.