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Liquid-drop model for fragmentation of multiply charged mercury clusters
Masato Nakamura1, René-Jean Tarento2
1Physics Laboratory and Institute of Quantum Science, College of Science and Technology, Nihon University, Narashinodai, Funabashi 274-8501, Japan.
The Journal of Chemical Physics
|March 3, 2018
Summary
Theoretical analysis of mercury cluster fragmentation reveals distinct fission behaviors for doubly and triply charged states. This explains experimental observations and highlights van der Waals-like properties in small mercury clusters.
Area of Science:
- Physical Chemistry
- Atomic and Molecular Physics
- Computational Chemistry
Background:
- Experimental studies on mercury cluster fragmentation by Katakuse's group.
- Previous theoretical models for cluster fission.
Purpose of the Study:
- Theoretically investigate the fragmentation of doubly and triply charged mercury clusters.
- Analyze experimental results on product size distribution.
- Determine the behavior of small mercury clusters during fragmentation.
Main Methods:
- Liquid-drop model calculations for fission barriers.
- Comparison of theoretical predictions with experimental data.
Main Results:
- Fission barrier minima differ for doubly (nearly symmetric) and triply (strongly asymmetric) charged mercury clusters.
- Appearance size correlates with fission barrier and monomer evaporation energy.
- Theoretical findings align with experimental product size distributions.
Conclusions:
- Small mercury clusters exhibit van der Waals cluster behavior during fragmentation.
- The liquid-drop model effectively explains mercury cluster fission dynamics.
- Fragmentation mechanisms are charge-dependent.
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