The Penning ionization electron spectra in metastable Ne*(3P0,2) colliding with H2O molecules at 0.040, 0.075, 0.130, 0.200 and 0.300 eV collision energies have been measured and compared with the photoelectron spectrum with Ne(I) photons. The results show the formation of the ground X(2B1) and the first excited state A(2A1) of the H2O+ product ion, with a X/A branching ratio slightly increasing with the collision energy, and with an average value of 0.29±0.03. The spectra have been analyzed in order to obtain some information about the potential energy surface describing the interaction between the two reacting particles.
CHEMIIONIZATION OF WATER MOLECULES BY NEON METASTABLE ATOMS
FALCINELLI, Stefano;BRUNETTI, Brunetto Giovanni;CANDORI, Pietro;CAPPELLETTI, David Michele;PIRANI, Fernando;VECCHIOCATTIVI, Franco
2012
Abstract
The Penning ionization electron spectra in metastable Ne*(3P0,2) colliding with H2O molecules at 0.040, 0.075, 0.130, 0.200 and 0.300 eV collision energies have been measured and compared with the photoelectron spectrum with Ne(I) photons. The results show the formation of the ground X(2B1) and the first excited state A(2A1) of the H2O+ product ion, with a X/A branching ratio slightly increasing with the collision energy, and with an average value of 0.29±0.03. The spectra have been analyzed in order to obtain some information about the potential energy surface describing the interaction between the two reacting particles.File in questo prodotto:
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