| Autor: |
Sonnenfroh, David M., Leone, Stephen R. |
| Předmět: |
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| Zdroj: |
Journal of Chemical Physics; 2/1/1989, Vol. 90 Issue 3, p1677, 9p |
| Abstrakt: |
The nascent rotational state distributions of N+2 produced in the charge transfer reaction of Ar+ (2 P3/2 ) with N2 at 0.28 and 0.40 eV are remeasured by laser-induced fluorescence. A supersonic expansion is used to reduce the initial rotational angular momentum of the N2 . The N+2 product rotational distributions, in both v‘=0 and v‘=1, have low and high energy components. For ease of reference, we describe each distribution as a summation of two Boltzmann distributions. At a relative collision energy of 0.28 eV, the Boltzmann temperatures are 100±20 K and 745±120 K for N+2 (v‘=0) and 80±10 K and 680±30 K for N+2 (v‘=1). Adiabatic potential energy curves for the lowest vibronic states are calculated and a simple curve hopping model is presented. Applying this model to the production of N+2 (v‘=1), for example, those reactants that charge transfer on the outgoing leg of a reactive trajectory interact with a deep potential well in the entrance channel for collinear geometry. We postulate that rotationally excited products result. In comparison, reactants that charge transfer on the ingoing leg (or in perpendicular geometry) do not sample the collinear potential well and the resulting products are less rotationally excited. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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