Title :

Sensitivity to electron-to-proton mass ratio variation from 12 C2H2 rovibrational transitions to v 1 + v 3 and v 1 + v 2 + v 4 + v 5 interacting levels

Author(s) :

Constantin, Florin Lucian [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]

Journal title :

Vibrational Spectroscopy

Pages :

228-234

Publisher :

Elsevier

Publication date :

2016

ISSN :

0924-2031

English keyword(s) :

electron-to-proton mass ratio constant variation
spectroscopic constants
Fermi and l-type interactions
rovibrational spectroscopy
acetylene frequency standard

HAL domain(s) :

Physique [physics]/Physique Quantique [quant-ph]
Physique [physics]/Physique [physics]/Optique [physics.optics]

English abstract : [en]

Calculations of the sensitivity to a variation of the electron-to-proton mass ratio μ for 12C2H2 transitions of the v1 + v3 and v1 + v2 + v4 + v5 bands in the spectral region at 1.5 μm are presented. They account for the ...
Show more >Calculations of the sensitivity to a variation of the electron-to-proton mass ratio μ for 12C2H2 transitions of the v1 + v3 and v1 + v2 + v4 + v5 bands in the spectral region at 1.5 μm are presented. They account for the Fermi and l-type rotation and vibration resonances of the excited states. The frequency splittings between near resonant transitions, arising from a cancellation of effective rotational intervals with frequency shifts associated to the vibrational band origin, the anharmonicity and the rotation-vibration interactions, have sensitivity coefficients to a variation of μ of both signs in the range of 10–103. The measurements of temporal drifts of frequency splittings against the Cs frequency standard have the potential to better constrain a variation of μ comparing to that of other fundamental constants. The systematic frequency shifts for frequency splittings are discussed for experimental setups based on intracavity saturated absorption spectroscopy and the constraint of a measurement of a fractional variation of μ is projected at 10−10 level.Show less >

Language :

Anglais

Popular science :

Non

Collections :

• Laboratoire de Physique des Lasers, Atomes et Molécules (PhLAM) - UMR 8523

Source :

Harvested from HAL