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- Centre National de la Recherche ScientifiqueFR145 papers
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9 papers · 1 filter
New determination of the fine structure constant and test of the quantum electrodynamics
Rym Bouchendira, Pierre Cladé, Saïda Guellati-Khélifa +2
We report a new measurement of the ratio between the Planck constant and the mass of atom. A new value of the fine structure constant is dedu…
Atomic interferometer measurements of Berry's and Aharonov-Anandan's phases for isolated spins S > 1/2 non-linearly coupled to external fields
Marie-Anne Bouchiat, Claude Bouchiat
The aim of the present paper is to propose experiments for observing the significant features of Berry's phases for S>1, generated by spin-Hamiltonians endowed with two couplings,…
Casimir-Polder interaction between an atom and a dielectric grating
Ana M. Contreras-Reyes, Romain Guérout, Paulo A. Maia Neto +3
We develop the scattering approach to calculate the exact dispersive Casimir-Polder potential between a ground-state atom and a rectangular grating. Our formalism allows, in princi…
Time-resolved quantitative multiphase interferometric imaging of a highly focused ultrasound pulse
Fabien Souris, Jules Grucker, Philippe Jacquier +3
Interferometric imaging is a well established method to image phase objects by mixing the image wavefront with a reference one on a CCD camera. It has also been applied to fast tra…
Investigating metastable hcp solid helium below its melting pressure
Fabien Souris, Jules Grucker, Jacques Dupont-Roc +1
We report a first attempt to produce metastable hcp solid helium below its melting pressure. A focused sound pulse is emitted along the c-axis of a mono-domain hcp helium-4 crystal…
Pionic deuterium
Th. Strauch, F. D. Amaro, D. Anagnostopoulos +16
The strong interaction shift and broadening Γ in pionic deuterium have been determined in a high statistics study of the πD(3p - 1s) X-ray transition using a high-resolution cr…