Related Experiment Video
Updated: Jul 3, 2026
07:49
On-line Analysis of Nitrogen Containing Compounds in Complex Hydrocarbon Matrixes
Published on: August 5, 2016
Dissociative single and double ionization of pyridine
Sitanath Mondal1, Brendan Wouterlood1, Gustavo A Garcia2
1Institute of Physics, University of Freiburg, Hermann-Herder-Straße 3a, 79104 Freiburg, Germany. sebastian.hartweg@physik.uni-freiburg.de.
Physical Chemistry Chemical Physics : PCCP
|July 2, 2026
Summary
This study investigates pyridine
Area of Science:
- Chemical Physics
- Molecular Dynamics
- Radiation Chemistry
Background:
- Heterocyclic molecules like pyridine are crucial in biological systems.
- Understanding their radiation damage is vital for biological material studies.
- Pyridine serves as a model for nucleobases and biomolecules.
Purpose of the Study:
- To detail dissociative single and double ionization of pyridine.
- To correlate cationic states with ionic dissociation products.
- To analyze dissociative double ionization pathways using advanced spectroscopy.
Main Methods:
- Double imaging photoelectron photoion coincidence spectroscopy.
- Quantum chemical calculations.
- Analysis of electron-ion-ion triple coincidences.
Main Results:
- Correlated cationic states to dissociation products for single ionization at 23 eV.
- Identified onsets of dissociative double ionization pathways at 36 eV.
- Distinguished pathways differing by hydrogen atom locations.
Conclusions:
- Provided detailed insights into pyridine's ionization and fragmentation.
- Established a foundation for studying radiation damage in complex environments.
- Highlighted the importance of pyridine as a model for biomolecules.
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