Excitation of the nitro group in nitromethane by electron transfer

In this paper we report on complementary measurements on ion-pair formation in collisions between K atoms and CH3NO2 molecules. The experiments were performed in a c.m. energy range from 20 up to 300 eV. Double differential cross sections were obtained by measuring the K+ ion yield as a function of...

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Veröffentlicht in:The Journal of chemical physics 1991-07, Vol.95 (1), p.166-175
Hauptverfasser: LOBO, R. F. M, MOUTINHO, A. M. C, LACMANN, K, LOS, J
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Sprache:eng
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Zusammenfassung:In this paper we report on complementary measurements on ion-pair formation in collisions between K atoms and CH3NO2 molecules. The experiments were performed in a c.m. energy range from 20 up to 300 eV. Double differential cross sections were obtained by measuring the K+ ion yield as a function of the scatter angle and as a function of the post-collision laboratory energy. On the other hand, relative total partial cross sections for the formation of CH3NO−2, NO−2, and O− were measured in the same energy range. The experimental results lead to the conclusion that in this energy range electron transfer takes place to three ionic states of CH3NO−2, a dominantly repulsive 2A1 state and two 2B1 states with relatively deep potential wells.
ISSN:0021-9606
1089-7690
DOI:10.1063/1.461472