Assessing the time constancy of the proton-to-electron mass ratio by precision ro-vibrational spectroscopy of a cold molecular beam (Articolo in rivista)

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  • Assessing the time constancy of the proton-to-electron mass ratio by precision ro-vibrational spectroscopy of a cold molecular beam (Articolo in rivista) (literal)
Anno
  • 2014-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.jms.2014.03.013 (literal)
Alternative label
  • Santamaria, L.; Di Sarno, V.; Ricciardi, I.; Mosca, S.; De Rosa, M.; Santambrogio, G.; Maddaloni, P.; De Natale, P. (2014)
    Assessing the time constancy of the proton-to-electron mass ratio by precision ro-vibrational spectroscopy of a cold molecular beam
    in Journal of molecular spectroscopy (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Santamaria, L.; Di Sarno, V.; Ricciardi, I.; Mosca, S.; De Rosa, M.; Santambrogio, G.; Maddaloni, P.; De Natale, P. (literal)
Pagina inizio
  • 116 (literal)
Pagina fine
  • 123 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://dx.doi.org/10.1016/j.jms.2014.03.013 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 300 (literal)
Rivista
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  • 8 (literal)
Note
  • ISI Web of Science (WOS) (literal)
  • Scopus (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • CNR-INO, Istituto Nazionale di Ottica, Via Campi Flegrei 34, 80078 Pozzuoli, Italy; CNR-INO, Istituto Nazionale di Ottica, Via N. Carrara 1, 50019 Sesto Fiorentino, Italy; Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany; INFN, Istituto Nazionale di Fisica Nucleare - Sez. di Firenze, Via G. Sansone 1, 50019 Sesto Fiorentino, Italy; CNR-INO, Istituto Nazionale di Ottica, Largo E. Fermi 6, 50125 Firenze, Italy (literal)
Titolo
  • Assessing the time constancy of the proton-to-electron mass ratio by precision ro-vibrational spectroscopy of a cold molecular beam (literal)
Abstract
  • We report the design of an experiment that aims to constrain, over a-few-year timescale, the fractional temporal variation of the proton-to-electron mass ratio, beta = m(p)/m(e), at a level of 10(-15)/yr by means of a spectroscopic frequency measurement on a beam of cold CF3H molecules. This is extracted from a buffer-gas-cooling source and then collimated by means of an electrostatic hexapole lens. Employed in a two-photon Ramsey-fringes interrogation scheme, the probe source is based on a mid-infrared quantum cascade laser, phase-locked to a specially-developed optical frequency comb that is ultimately referenced to the Cs primary standard via an optical fiber link. (C) 2014 Elsevier Inc. All rights reserved. (literal)
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