			15min:

THE INFRARED SPECTRUM OF H₂O₂⁺ TRAPPED IN SOLID NEON.

CATHERINE L. LUGEZ, WARREN E. THOMPSON AND MARILYN E. JACOX, Optical Technology Division, National Institute of Standards and Technology, Gaithersburg, MD 20899-8441.

When a Ne:H₂O₂⁺ sample is codeposited at approximately 5 K with a beam of microwave-excited neon atoms, photoionization and Penning ionization of the H₂O₂ leads to the stabilization of the H₂O₂⁺ cation. Although the energy of the excited neon atoms exceeds that required for the formation of HO₂⁺ from H₂O₂, as has been previously found in photoionization studies, the yield of this fragment ion is small. The infrared spectra observed for H₂O₂⁺ and for its deuterium-substituted isotopomers will be compared with those predicted by ab initio calculations.