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Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−
Published on: July 27, 2018
Threshold photodetachment in a repulsive potential
A O Lindahl1, J Rohlén, H Hultgren
1Department of Physics, University of Gothenburg, SE-412 96 Gothenburg, Sweden. anton.lindahl@physics.gu.se
Abstract:
We report on the first experimental observation of a new threshold behavior observed in the 5(2)G partial channel in photodetachment of K(-). It arises from the repulsive polarization interaction between the detached electron and the residual K(5(2)G) atom, which has a large negative dipole polarizability. In order to account for the observation in the K(5(2)G) channel, we have developed a semiclassical model that predicts an exponential energy dependence for the cross section. The measurements were made with collinear laser-ion beams and a resonance ionization detection scheme.
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