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Updated: Aug 14, 2026

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy
Published on: June 28, 2016
Threshold-related enhancement of the high-energy plateau in above-threshold detachment
Bogdan Borca1, M V Frolov, N L Manakov
1Department of Physics and Astronomy, The University of Nebraska, Lincoln, Nebraska 68588-0111, USA.
Abstract:
We present nonperturbative theoretical results showing a resonant-like enhancement of above-threshold detachment spectra in the region of the high-energy plateau as the laser intensity sweeps across channel thresholds. This enhancement has a pure quantum origin stemming from well-known threshold phenomena in multichannel problems whose features are clearly demonstrated in our numerical results. Similar well-known anomalies at neutral atom thresholds are expected to explain experimentally observed resonant-like enhancements of above-threshold ionization spectra.
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