Determination of the Boltzmann Constant by Means of Precision Measurements of (H2O)-O-18 Line Shapes at 1.39 mu m (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• Determination of the Boltzmann Constant by Means of Precision Measurements of (H2O)-O-18 Line Shapes at 1.39 mu m (Articolo in rivista) (literal)

Anno

• 2013-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1103/PhysRevLett.111.060803 (literal)

Alternative label

• Moretti, L. and Castrillo, A. and Fasci, E. and De Vizia, M. D. and Casa, G. and Galzerano, G. and Merlone, A. and Laporta, P. and Gianfrani, L. (2013)
  Determination of the Boltzmann Constant by Means of Precision Measurements of (H2O)-O-18 Line Shapes at 1.39 mu m
  in Physical review letters (Print)
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Moretti, L. and Castrillo, A. and Fasci, E. and De Vizia, M. D. and Casa, G. and Galzerano, G. and Merlone, A. and Laporta, P. and Gianfrani, L. (literal)

Pagina inizio

• 060803-1 (literal)

Pagina fine

• 060803-5 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 111 (literal)

Rivista

• Physical review letters (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

• 5 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

• 6 (literal)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Gianfrani, L (Reprint Author), Univ Naples 2, Dipartimento Matemat & Fis, I-81100 Caserta, Italy. Moretti, L.; Castrillo, A.; Fasci, E.; De Vizia, M. D.; Casa, G.; Gianfrani, L., Univ Naples 2, Dipartimento Matemat & Fis, I-81100 Caserta, Italy. Galzerano, G.; Laporta, P., CNR, Ist Foton & Nanotecnol, I-20133 Milan, Italy. Galzerano, G.; Laporta, P., Politecn Milan, Dipartimento Fis, I-20133 Milan, Italy. Merlone, A., Ist Nazl Ric Metrol, INRIM, I-10135 Turin, Italy. (literal)

Titolo

• Determination of the Boltzmann Constant by Means of Precision Measurements of (H2O)-O-18 Line Shapes at 1.39 mu m (literal)

Abstract

• We report on a new implementation of Doppler broadening thermometry based on precision absorption spectroscopy by means of a pair of offset-frequency locked extended-cavity diode lasers at 1.39 mu m. The method consists in the highly accurate observation of the shape of the 4(4,1) -> 4(4,0) line of the (H2O)-O-18 nu(1) + nu(3) band, in a water vapor sample at thermodynamic equilibrium. A sophisticated and extremely refined spectral analysis procedure is adopted for the retrieval of the Doppler width as a function of the gas pressure, taking into account the Dicke narrowing effect, the speed dependence of relaxation rates, and the physical correlation between velocity-changing and dephasing collisions. A spectroscopic determination of the Boltzmann constant with a combined (type A and type B) uncertainty of 24 parts over 10(6) is reported. This is the best result obtained so far by means of an optical method. Our determination is in agreement with the recommended CODATA value. (literal)

Prodotto di

• Istituto di fotonica e nanotecnologie (IFN) (Istituto)

Autore CNR

• GIANLUCA GALZERANO (Unità di personale interno)
• PAOLO LAPORTA (Persona)

Insieme di parole chiave

• Keywords of "Determination of the Boltzmann Constant by Means of Precision Measurements of (H2O)-O-18 Line Shapes at 1.39 mu m" (Insieme di parole chiave)

Incoming links:

Autore CNR di

• GIANLUCA GALZERANO (Unità di personale interno)
• PAOLO LAPORTA (Persona)

Prodotto

• Istituto di fotonica e nanotecnologie (IFN) (Istituto)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Physical review letters (Rivista)

Insieme di parole chiave di

• Keywords of "Determination of the Boltzmann Constant by Means of Precision Measurements of (H2O)-O-18 Line Shapes at 1.39 mu m" (Insieme di parole chiave)