Reexamination of the quenching of NO(+) vibrations by O(2)(a (1)Delta(g)).
The quenching of vibrationally excited NO(+) by O(2)(a (1)Delta(g)) has been examined using the monitor ion technique and chemical generation of O(2)(a (1)Delta(g)). In contrast to previous results which showed that the rate constant was much larger than for ground state O(2), this study finds that the rate constant for quenching is below the detection limit (<10(-11) cm(3) s(-1)) of this experiment. The previous experiments produced O(2)(a (1)Delta(g)) in a discharge, which would also produces O atoms. We found that the monitor ion CH(3)I(+) reacts with O atoms to produce CHIOH(+). This is the likely cause of error in the previous experiments.
Eyet
Nicole
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Department of Chemistry, Saint Anselm College, 100 Saint Anselm Drive, Manchester, New Hampshire 03102, USA.
Viggiano
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