Title :

Enhanced Sensitivity to mp/me Variation from Microwave Transitions between Vibration-Inversion States of Ammonia

Author(s) :

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

Conference title :

2024 European Frequency and Time Forum (EFTF)

City :

Neuchâtel

Country :

France

Start date of the conference :

2024-06-25

Book title :

Proceedings of EFTF

Publisher :

IEEE

Publication date :

2024-10-24

English keyword(s) :

sensitivity to proton-electron mass ratio variation
ammonia rotation-vibration Hamiltonian
double resonance spectroscopy
molecular fountain
ammonia microwave clock

HAL domain(s) :

Physique [physics]/Physique Quantique [quant-ph]
Physique [physics]/Physique [physics]/Agrégats Moléculaires et Atomiques [physics.atm-clus]
Physique [physics]/Physique [physics]/Optique [physics.optics]

English abstract : [en]

Ammonia microwave transitions between vibration-inversion states in the range 6300-7200 cm^(-1) are predicted with enhanced sensitivity coefficients to the variation of the proton-electron mass ratio. These transitions may ...
Show more >Ammonia microwave transitions between vibration-inversion states in the range 6300-7200 cm^(-1) are predicted with enhanced sensitivity coefficients to the variation of the proton-electron mass ratio. These transitions may be addressed by optical pumping and Ramsey interrogation scheme with a molecular fountain setup. A molecular clock based on a sensitive transition may provide 10^(-9) (t/1s)^(-1/2) level fractional stability and 10^(-15) level fractional accuracy, and may enable probing proton-electron mass ratio fractional variation at the 10(-13) level or better in hours of averaging time.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

ANR Project :

Physiques et Chimie de l'Environnement Atmosphérique

Collections :

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

Source :

Harvested from HAL

Submission date :

2025-01-23T04:40:05Z