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Maps of nonadiabatic coupling in triatomic hydrogen
Ulrich Galster1, Ulrich Müller, Hanspeter Helm
1Department of Molecular and Optical Physics, Albert-Ludwigs-Universität, Hermann-Herder-Strasse 3, D-79104 Freiburg, Germany.
Physical Review Letters
|March 5, 2004
Summary
We observed how excited H3* molecules break apart into hydrogen atoms. This revealed structured patterns showing how the atoms
Area of Science:
- Physical Chemistry
- Molecular Dynamics
- Quantum Mechanics
Background:
- Understanding molecular dissociation is crucial for chemical reaction dynamics.
- State-selected H3* (trihydrogen radical cation) provides a model system for studying polyatomic molecular dissociation.
Purpose of the Study:
- To investigate the dissociation dynamics of state-selected neutral H3* molecules.
- To visualize the correlated motion of product hydrogen atoms.
Main Methods:
- Experimental dissociation of state-selected neutral H3* molecules.
- Analysis of the correlated motion of the resulting three ground-state hydrogen atoms.
Main Results:
- Highly structured correlation maps were observed in the motion of the three hydrogen atoms.
- These maps directly visualize the internal molecular couplings governing dissociation.
Conclusions:
- The dissociation of H3* offers a unique window into the intricate dynamics of polyatomic molecules.
- Correlated motion maps provide direct insight into the forces driving molecular breakup.