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Updated: Aug 9, 2026
10:37
Spatial Separation of Molecular Conformers and Clusters
Published on: January 9, 2014
Size of neutral argon clusters from core-level photoelectron spectroscopy
H Bergersen1, M Abu-samha, J Harnes
1Department of Physics, Uppsala University, Box 530, SE-751 21, Uppsala, Sweden. henrik.bergersen@fysik.uu.se
Physical Chemistry Chemical Physics : PCCP
|April 25, 2006
Summary
Theoretical models of argon 2p photoionization spectra were used to estimate argon cluster sizes. Results suggest that common size estimators may underestimate the actual mean cluster size in experiments.
Area of Science:
- Atomic and Molecular Physics
- Physical Chemistry
- Materials Science
Background:
- Understanding the properties of neutral argon clusters is crucial for various applications.
- Accurate determination of cluster size is essential for interpreting experimental data.
Purpose of the Study:
- To develop theoretical models for Ar 2p photoionization lineshapes in neutral argon clusters.
- To use these models to estimate the mean cluster size in experimental settings.
- To evaluate the accuracy of existing size estimation methods.
Main Methods:
- Calculation of theoretical lineshape models for Ar 2p photoionization spectra.
- Fitting these models to experimental spectra of argon clusters.
- Comparison of model-derived size estimates with those from stagnation condition estimators.
Main Results:
- Theoretical lineshape models were successfully developed for argon clusters of varying sizes.
- Fitting these models to experimental data provided estimates for the mean cluster size.
- A discrepancy was observed, indicating potential underestimation by stagnation condition methods.
Conclusions:
- Theoretical lineshape modeling provides a reliable method for estimating argon cluster sizes.
- Stagnation condition-based size estimators may systematically underestimate the mean cluster size.
- Further refinement of cluster size determination methods is warranted.
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