dorsal/arxiv
View SchemaBias in the temperature of helium nanodroplets measured by an embedded rotor
| Authors | Kevin K. Lehmann |
|---|---|
| Categories | |
| ArXiv ID | physics/0311112 |
| URL | https://arxiv.org/abs/physics/0311112 |
| DOI | 10.1063/1.1638991 |
Abstract
The ro--vibrational spectra of molecules dissolved in liquid $^4$He nanodroplets display rotational structure. Where resolved, this structure has been used to determine a temperature that has been assumed to equal that of the intrinsic excitations of the helium droplets containing the molecules. Consideration of the density of states as a function of energy and total angular momentum demonstrates that there is a small but significant bias of the rotor populations that make the temperature extracted from a fit to its rotational level populations slightly higher than the temperature of the ripplons of the droplet. This bias grows with both the total angular momentum of the droplet and with the moment of inertia of the solute molecule.
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"abstract": "The ro--vibrational spectra of molecules dissolved in liquid $^4$He\nnanodroplets display rotational structure. Where resolved, this structure has\nbeen used to determine a temperature that has been assumed to equal that of the\nintrinsic excitations of the helium droplets containing the molecules.\nConsideration of the density of states as a function of energy and total\nangular momentum demonstrates that there is a small but significant bias of the\nrotor populations that make the temperature extracted from a fit to its\nrotational level populations slightly higher than the temperature of the\nripplons of the droplet. This bias grows with both the total angular momentum\nof the droplet and with the moment of inertia of the solute molecule.",
"arxiv_id": "physics/0311112",
"authors": [
"Kevin K. Lehmann"
],
"categories": [
"physics.chem-ph"
],
"doi": "10.1063/1.1638991",
"title": "Bias in the temperature of helium nanodroplets measured by an embedded rotor",
"url": "https://arxiv.org/abs/physics/0311112"
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