Photodissociation dynamics of ionic argon pentamer

Area of Science:

• Physical Chemistry
• Atomic and Molecular Physics
• Computational Chemistry

Background:

• Ionized argon clusters are model systems for studying complex chemical dynamics.
• Understanding photodissociation is crucial for cluster physics and spectroscopy.
• Previous studies have not fully explored the ultraviolet excitation regime for Ar(5)(+).

Purpose of the Study:

• To investigate the photodissociation dynamics of the ionized argon pentamer, Ar(5)(+).
• To compare theoretical predictions with existing experimental data for photofragmentation.
• To explore new theoretical predictions for ultraviolet photoexcitation energies.

Main Methods:

• Utilized an extended diatomics-in-molecules interaction model.
• Incorporated spin-orbit coupling effects into the calculations.
• Employed various dynamical approaches for simulation.

Main Results:

• Detailed comparison of theoretical predictions with experimental photofragment abundances.
• Analysis of kinetic and internal energy distributions of photofragments.
• New theoretical predictions for photodissociation at ultraviolet energies.

Conclusions:

• The theoretical model accurately reproduces experimental observations for Ar(5)(+) photodissociation.
• The study provides a comprehensive understanding of argon cluster fragmentation dynamics.
• This work opens new avenues for exploring ultraviolet photodissociation of atomic clusters.