Related Experiment Video
Updated: Aug 15, 2026

Spatial Separation of Molecular Conformers and Clusters
Published on: January 9, 2014
Interpreting closed-loop learning control of molecular fragmentation in terms of wave-packet dynamics and enhanced
David Cardoza1, Mark Baertschy, Thomas Weinacht
1Department of Physics, Stony Brook University, Stony Brook, New York 11794, USA.
Abstract:
We interpret a molecular fragmentation experiment using shaped, ultrafast laser pulses in terms of enhanced molecular ionization during dissociation. A closed-loop learning control experiment was performed to maximize the CF3+CH3+ production ratio in the dissociative ionization of CH3COCF3. Using ab inito molecular structure calculations and quasistatic molecular ionization calculations along with data from pump-probe experiments, we identify the primary control mechanism which is quite general and should be applicable to a broad class of molecules.
Related Concept Videos
Mass Spectrometry: Overview
Mass Spectrometry: Molecular Fragmentation Overview
One type of fragmentation pattern is the cleavage of a single bond in the molecular ion. The cleavage leads to a radical and a cation. The cleavage can occur at...
Mass Spectrometry: Long-Chain Alkane Fragmentation
Molecular Spectroscopy: Absorption and Emission
Mass Spectrum: Interpretation
Deactivation Processes: Jablonski Diagram

