Related Experiment Video
Updated: Jun 2, 2026

Measurement of Ultrafast Vibrational Coherences in Polyatomic Radical Cations with Strong-Field Adiabatic Ionization
Published on: August 6, 2018
Resonant Auger decay of molecules in intense x-ray laser fields: light-induced strong nonadiabatic effects
Lorenz S Cederbaum1, Ying-Chih Chiang, Philipp V Demekhin
1Theoretische Chemie, Universität Heidelberg, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany.
Abstract:
The resonant Auger process is studied in intense x-ray laser fields. It is shown that the dressing of the initial and decaying states by the field leads to coupled complex potential surfaces which, even for diatomic molecules, possess intersections at which the nonadiabatic couplings are singular. HCl is studied as an explicit showcase example. The exact results differ qualitatively from those without rotations. A wealth of nonadiabatic phenomena is expected in decay processes in intense x-ray fields.
Related Concept Videos
Atomic Absorption Spectroscopy: Radiation and Light Sources
Two common narrow-range 'line' sources used in AAS are hollow-cathode lamps (HCLs) and...
Double Resonance Techniques: Overview
Spin decoupling is usually achieved by...
Atomic Absorption Spectroscopy: Atomization Methods
Atomic Emission Spectroscopy: Overview
Deactivation Processes: Jablonski Diagram
Molecular Spectroscopy: Absorption and Emission

