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Updated: May 8, 2026
08:22
Measurement of Ultrafast Vibrational Coherences in Polyatomic Radical Cations with Strong-Field Adiabatic Ionization
Published on: August 6, 2018
Strong field control of predissociation dynamics
María E Corrales1, Garikoitz Balerdi, Vincent Loriot
1Departamento de Química Física, Facultad de Ciencias Químicas (Unidad Asociada CSIC), Universidad Complutense de Madrid, 28040 Madrid, Spain.
Faraday Discussions
|September 12, 2013
Summary
Strong laser fields can control methyl iodide (CH3I) predissociation dynamics. These methods alter predissociation lifetime and product ratios, offering new control pathways.
Area of Science:
- Physical Chemistry
- Chemical Physics
- Molecular Dynamics
Background:
- Methyl iodide (CH3I) exhibits state-selective electronic predissociation at the B-band origin.
- This predissociation occurs via crossing with a valence dissociative state.
- Controlling molecular dynamics with external fields is a key area in chemical physics.
Purpose of the Study:
- To investigate strong field control scenarios for CH3I predissociation.
- To explore the influence of Dynamic Stark Control (DSC) and pump-dump strategies.
- To determine the effect of these control methods on predissociation lifetime and product branching.
Main Methods:
- Theoretical investigation of CH3I predissociation dynamics.
- Application of Dynamic Stark Control (DSC) laser pulse sequences.
- Implementation of pump-dump laser strategies.
- Analysis of changes in predissociation lifetime and product branching ratios.
Main Results:
- Strong field control is demonstrated to be effective for CH3I predissociation.
- Dynamic Stark Control (DSC) successfully alters the predissociation lifetime.
- Pump-dump strategies effectively modify the product branching ratio.
- These methods provide pathways to selectively control dissociation outcomes.
Conclusions:
- Strong laser fields offer precise control over methyl iodide predissociation.
- DSC and pump-dump techniques are viable strategies for manipulating molecular dissociation.
- This research opens avenues for state-selective control in molecular photodissociation.
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