P. Erman et al., DIRECT DETERMINATION OF THE IONIZATION-POTENTIAL OF CO BY RESONANTLY ENHANCED MULTIPHOTON IONIZATION MASS-SPECTROSCOPY, Chemical physics letters, 215(1-3), 1993, pp. 173-178
The ionization potential of CO has been measured using resonantly enha
nced multiphoton ionization (REMPI) mass spectroscopy. The result, IP(
CO) = 113031.3 +/- 2.2 cm-1, is corrected for field ionization effects
by zero field extrapolation and it is in close agreement with results
from classical absorption spectroscopy.