| Autor: |
Hashemi, R., Povey, C., Derksen, M., Naseri, H., Garber, J., Predoi-Crossa, A. |
| Předmět: |
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| Zdroj: |
Journal of Chemical Physics; 12/7/2014, Vol. 141 Issue 21, p1-7, 7p, 2 Diagrams, 4 Graphs |
| Abstrakt: |
In this paper, we present accurate measurements of the fundamental Boltzmann constant based on a line-shape analysis of acetylene spectra in the v1 + v3 band recorded using a tunable diode laser. Experimental spectra recorded at low pressures (0.25 - 9 Torr), have been analyzed using a Speed Dependent Voigt model that takes into account the molecular speed dependence effects. This lineshape model reproduces the experimental data with good accuracy and allows us to determine precise line-shape parameters for the P(25) transition of the v1 + v3 band. From the recorded spectra we obtained the Doppler-width and then determined the Boltzmann constant, kB. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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