Abstract
Multiple temperature rotational distributions are observed in the N+2 products of the Penning ionization of N2 by Ne*(3P2). The rotational distributions for N=2–21 are well fit by a two-component Boltzmann distribution having a low temperature of 50 K±10 K and a high temperature ranging from 220 to 490 K±50 K. The relative contribution of each component varies smoothly with vibrational level from 62% Tlow:38% Thigh for v=0 to 43% Tlow:57% Thigh for v=4(±5%). We interpret the observed multiple rotational distributions as evidence for exit channel effects arising from details of the impulsive interaction in the electron transfer process. Since the overall degree of rotational excitation is small, observation of the multiple distributions requires suppression of the reactant initial rotation by using a supersonic molecular beam.
Published Version
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