Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Lemarchand Cyril"'
Autor:
Darquié Benoît, Mejri Sinda, Sow Papa Lat Tabara, Lemarchand Cyril, Triki Meriam, Tokunaga Sean K., Bordé Christian J., Chardonnet Christian, Daussy Christophe
Publikováno v:
EPJ Web of Conferences, Vol 57, p 02005 (2013)
Accurate molecular spectroscopy in the mid-infrared region allows precision measurements of fundamental constants. For instance, measuring the linewidth of an isolated Doppler-broadened absorption line of ammonia around 10 μm enables a determination
Externí odkaz:
https://doaj.org/article/6e4317bdd88d4e48b92ac0add7b01105
Autor:
Darquié, Benoît, Mejri, Sinda, Sow, Papa Lat Tabara, Lemarchand, Cyril, Triki, Meriam, Tokunaga, Sean, Bordé, Christian J., Chardonnet, Christian, Daussy, Christophe
Publikováno v:
ICAP 2012 -- 23rd International Conference on Atomic Physics, Jul 2012, Palaiseau, France. EPJ Web of Conferences 57, pp.02005, 2013
Accurate molecular spectroscopy in the mid-infrared region allows precision measurements of fundamental constants. For instance, measuring the linewidth of an isolated Doppler-broadened absorption line of ammonia around 10 $\mu$m enables a determinat
Externí odkaz:
http://arxiv.org/abs/1506.06464
Autor:
Lemarchand, Cyril, Mejri, Sinda, Sow, Papa Lat Tabara, Triki, Meriam, Tokunaga, Sean K., Briaudeau, Stephan, Chardonnet, Christian, Darquié, Benoît, Daussy, Christophe
Publikováno v:
Metrologia 50, 623-630 (2013)
We report on our on-going effort to measure the Boltzmann constant, kB, using the Doppler Broadening Technique. The main systematic effects affecting the measurement are discussed. A revised error budget is presented in which the global uncertainty o
Externí odkaz:
http://arxiv.org/abs/1309.4549
Autor:
Triki, Meriam, Lemarchand, Cyril, Darquié, Benoît, Sow, Papa Lat Tabara, Roncin, Vincent, Chardonnet, Christian, Daussy, Christophe
Publikováno v:
Physical Review A 85, 6 (2012) 062510
In this paper we present an accurate analysis of the shape of an isolated rovibrational ammonia line from the strong nu2 band around 10 $\mu$m, recorded by laser absorption spectroscopy. Experimental spectra obtained under controlled temperature and
Externí odkaz:
http://arxiv.org/abs/1201.4087
Autor:
Lemarchand, Cyril, Triki, Meriam, Darquié, Benoît, Bordé, Christian J., Chardonnet, Christian, Daussy, Christophe
Publikováno v:
New Journal of Physics 13 (2011) 073028
In this paper, we present significant progress performed on an experiment dedicated to the determination of the Boltzmann constant, k, by accurately measuring the Doppler absorption profile of a line in a gas of ammonia at thermal equilibrium. This o
Externí odkaz:
http://arxiv.org/abs/1012.4181
Autor:
Lemarchand, Cyril, Djerroud, Khelifa, Darquié, Benoît, Lopez, Olivier, Amy-Klein, Anne, Chardonnet, Christian, Bordé, Christian J., Briaudeau, Stephan, Daussy, Christophe
Publikováno v:
International Journal of Thermophysics 31, 7 (2010) 1347-1359
In this paper, we present the latest results on the measurement of the Boltzmann constant kB, by laser spectroscopy of ammonia at 10 ?m. The Doppler absorption profile of a ro-vibrational line of an NH3 gas sample at thermal and pressure equilibrium
Externí odkaz:
http://arxiv.org/abs/0911.2507
Autor:
Djerroud, Khelifa, Lemarchand, Cyril, Gauguet, Alexandre, Daussy, Christophe, Briaudeau, Stephan, Darquié, Benoît, Lopez, Olivier, Amy-Klein, Anne, Chardonnet, Christian, Bordé, Christian J.
Publikováno v:
Comptes Rendus Physique 10, 9 (2009) 883-893
In this paper, we describe an experiment performed at the Laboratoire de Physique des Lasers and dedicated to an optical measurement of the Boltzmann constant. With the proposed innovative technique, determining comes down to an ordinary frequency me
Externí odkaz:
http://arxiv.org/abs/0911.2506
Autor:
Lemarchand, Cyril
Publikováno v:
Optique [physics.optics]. Université Paris-Nord-Paris XIII, 2012. Français
We detail in this manuscript the experiment developed in the MMTF team of the Laboratoire de Physique des Lasers, whose aim is to contribute to the redefinition of the International System of units through the measurement of the Boltzmann constant, k
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::a05805ca199e73269a6bf65e2b32cf7e
https://theses.hal.science/tel-00764087
https://theses.hal.science/tel-00764087
Autor:
Lemarchand, Cyril
Ce manuscrit présente l'expérience développée dans l'équipe MMTF du Laboratoire de Physique des Lasers avec pour objectif de contribuer à la redéfinition du Système International d'unités en mesurant la constante de Boltzmann, kB, par spectr