Intramolecular vibronic transitions in collisions of Na-2((BIIu)-I-1) withHe and Ar atoms

Rate constants for intra:molecular vibronic transitions Na-2((BIIu)-I-1, v' )--> Na-2((2)(1)Sigma(g)(+), v) in collisions of Na-2((BIIu)-I-1, v') with He and Ar atoms are calculated. Calculations were accomplished by the trans ition state method taking into account strong coupling of vibrational state s of Na-2((2)(1)Sigma(g)(+), v) formed by the electron transition while the products are flying apart. The results of calculations are in qualitative agreement with the available experimental data.