dorsal/arxiv
View SchemaFirst direct determination of the Boltzmann constant by an optical method
| Authors | Christophe Daussy, Mickael Guinet, Anne Amy-Klein, Khelifa Djerroud, Yves Hermier, Stephan Briaudeau, Christian J. Bordé, Christian Chardonnet |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0701176 |
| URL | https://arxiv.org/abs/quant-ph/0701176 |
| DOI | 10.1103/PhysRevLett.98.250801 |
| Journal | Physical Review Letters 98 (2007) 250801 |
Abstract
We have recorded the Doppler profile of a well-isolated rovibrational line in the \nu2 band of 14NH3. Ammonia gas was placed in an absorption cell thermalized by a water-ice bath. By extrapolating to zero pressure, we have deduced the Doppler width which gives a first measurement of the Boltzmann constant, kB, by laser spectroscopy. A relative uncertainty of 2x10-4 has been obtained. The present determination should be significantly improved in the near future and contribute to a new definition of the kelvin.
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"abstract": "We have recorded the Doppler profile of a well-isolated rovibrational line in\nthe \\nu2 band of 14NH3. Ammonia gas was placed in an absorption cell\nthermalized by a water-ice bath. By extrapolating to zero pressure, we have\ndeduced the Doppler width which gives a first measurement of the Boltzmann\nconstant, kB, by laser spectroscopy. A relative uncertainty of 2x10-4 has been\nobtained. The present determination should be significantly improved in the\nnear future and contribute to a new definition of the kelvin.",
"arxiv_id": "quant-ph/0701176",
"authors": [
"Christophe Daussy",
"Mickael Guinet",
"Anne Amy-Klein",
"Khelifa Djerroud",
"Yves Hermier",
"Stephan Briaudeau",
"Christian J. Bord\u00e9",
"Christian Chardonnet"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevLett.98.250801",
"journal_ref": "Physical Review Letters 98 (2007) 250801",
"title": "First direct determination of the Boltzmann constant by an optical method",
"url": "https://arxiv.org/abs/quant-ph/0701176"
},
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