0000000000854671
AUTHOR
Rafik Ballou
showing 3 related works from this author
New exclusion limits on scalar and pseudoscalar axionlike particles from light shining through a wall
2015
Physics beyond the Standard Model predicts the possible existence of new particles that can be searched at the low-energy frontier in the sub-eV range. The OSQAR photon regeneration experiment looks for ``light shining through a wall'' from the quantum oscillation of optical photons into ``weakly interacting sub-eV particles,'' such as axion or axionlike particles (ALPs) in a 9 T transverse magnetic field over a length of $2\ifmmode\times\else\texttimes\fi{}14.3\text{ }\text{ }\mathrm{m}$. In 2014, this experiment was run with an outstanding sensitivity, using an 18.5 W continuous wave laser emitting in the green at the single wavelength of 532 nm. No regenerated photons have been detected …
Magnetic field effect on electrodeposition of cobalt dendrites
2012
International audience; We are studying the effect of a magnetic field on cobalt dendrites grown by electrodeposition in thin cell. Several electrochemical parameters like pH, current density, initial concentration, are known to affect the crystalline structure of electrodeposited cobalt. Here we analyze, for two values of the pH, the effect of a high magnetic field (6 T) on the growth direction of the dendrites with respect to the crystalline axis of the structure.
Characterization of MHD convection in thin cell electrodeposition
2009
International audience; We are studying the effect of a magnetic field normal to the cell in electrodeposition of zinc arborescences. When the cell thickness is reduced, the MHD convection, responsible for morphology changes, spiraling, etc. is suppressed, but in a high magnetic field there is still an effect maybe due to small-scale hydrodynamic convection or to the Lorentz force on the growing metallic branches, the "Laplace" force.