dorsal/arxiv
View SchemaTheoretical study of finite temperature spectroscopy in van der Waals clusters. II Time-dependent absorption spectra
| Authors | F. Calvo, F. Spiegelman, D. J. Wales |
|---|---|
| Categories | |
| ArXiv ID | physics/0212063 |
| URL | https://arxiv.org/abs/physics/0212063 |
| DOI | 10.1063/1.1566951 |
Abstract
Using approximate partition functions and a master equation approach, we investigate the statistical relaxation toward equilibrium in selected CaAr$_n$ clusters. The Gaussian theory of absorption (previous article) is employed to calculate the average photoabsorption intensity associated with the 4s^2-> 4s^14p^1 transition of calcium as a function of time during relaxation. In CaAr_6 and CaAr_10 simple relaxation is observed with a single time scale. CaAr_13 exhibits much slower dynamics and the relaxation occurs over two distinct time scales. CaAr_37 shows much slower relaxation with multiple transients, reminiscent of glassy behavior due to competition between different low-energy structures. We interpret these results in terms of the underlying potential energy surfaces for these clusters.
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"abstract": "Using approximate partition functions and a master equation approach, we\ninvestigate the statistical relaxation toward equilibrium in selected CaAr$_n$\nclusters. The Gaussian theory of absorption (previous article) is employed to\ncalculate the average photoabsorption intensity associated with the 4s^2-\u003e\n4s^14p^1 transition of calcium as a function of time during relaxation. In\nCaAr_6 and CaAr_10 simple relaxation is observed with a single time scale.\nCaAr_13 exhibits much slower dynamics and the relaxation occurs over two\ndistinct time scales. CaAr_37 shows much slower relaxation with multiple\ntransients, reminiscent of glassy behavior due to competition between different\nlow-energy structures. We interpret these results in terms of the underlying\npotential energy surfaces for these clusters.",
"arxiv_id": "physics/0212063",
"authors": [
"F. Calvo",
"F. Spiegelman",
"D. J. Wales"
],
"categories": [
"physics.chem-ph",
"physics.atm-clus"
],
"doi": "10.1063/1.1566951",
"title": "Theoretical study of finite temperature spectroscopy in van der Waals clusters. II Time-dependent absorption spectra",
"url": "https://arxiv.org/abs/physics/0212063"
},
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