Oscillator strengths for Rydberg states in the polar molecule NeH

We calculate oscillator strengths for Rydberg electron transitions in polar molecules with a simple analytical procedure of taking into account the effects of nonspherical symmetry of molecular core field due to its dipole moment. Such effects result in nonzero oscillator strengths values for some transitions which are forbidden in widely used atom-like models of molecular Rydberg states. For the allowed transitions we also report the difference between the atom-like calculations and the calculations that account for the dipole moment of the molecular Core. (C) 2002 Elsevier science.