Publication
Antihydrogen accumulation for fundamental symmetry tests
Publications associées (33)
Visualization of electronic density
The spatial volume occupied by an atom depends on its electronic density. Although this density can only be evaluated exactly for hydrogen-like atoms, there are many excellent algorithms and packages to calculate it numerically for other materials. Three-d ...
Elsevier Science Bv2015Thermodynamics, structure, and charge state of hydrogen-vacancy complexes in delta-plutonium
Hydrogen-vacancy complexes can form in a material due to the exothermic binding of hydrogen atoms to vacancy sites. We explore the structure and electronic properties of hydrogen-vacancy complexes in delta-Pu using a density functional theory supercell app ...
American Physical Society2014Particle-hole condensates of higher angular momentum in hexagonal systems
Hexagonal lattice systems (e.g., triangular, honeycomb, kagome) possess a multidimensional irreducible representation corresponding to d(x2-y2) and d(xy) symmetry. Consequently, various unconventional phases that combine these d-wave representations can oc ...
Amer Physical Soc2013Development of the Electromagnetic Calorimeter for the Precise Measurement of the Cosmic Ray Positron Fraction with PEBS
Since almost a century ago, it is known that a quarter of the energy density in the Universe is represented by the dark matter which has been seen only through gravitational interaction. Despite of intensive searches for a dark matter constituent in differ ...
EPFL2012Quantum-statistical properties of the emission from two-level atoms embedded in coupled cavities
Paolo Schwendimann, Antonio Quattropani
The quantum-statistical properties of the radiation emitted from two coupled cavities containing one or two two-level atoms are discussed, and both configurations are compared. The results concerning stationary photon statistics, photon blocking, squeezing ...
Amer Physical Soc2012Hydrogen-dominated plasma, due to silane depletion, for microcrystalline silicon deposition
Christoph Hollenstein, Alan Howling, Raffaello Sobbia
Plasma conditions for microcrystalline silicon deposition generally require a high flux of atomic hydrogen, relative to SiH alpha=0 -> 3 radicals, on the growing film. The necessary dominant partial pressure of hydrogen in the plasma is conventionally obta ...
American Vacuum Society2010Exact results for thermodynamics of the hydrogen plasma: Low-temperature expansions beyond Saha theory
We study hydrogen in the Saha regime, within the physical picture in terms of a quantum proton-electron plasma. Long ago, Saha showed that, at sufficiently low densities and low temperatures, the system behaves almost as an ideal mixture made with hydrogen ...
2008Meta- rather than ortho-directed metalations: Buttressing effects prejudicing the proton abstraction from (2,6-dihalophenyl)silanes
Christophe Heiss, Fabrice Cottet
(2,6-Dichlorophenyl)trimethyl- and -triethylsilane exhibit untypical reactivity patterns toward strong bases. When treated at -100 DegC with lithium 2,2,6,6-tetramethylpiperidide, they give rise to two, with sec- or tert-butyllithium even three, different ...
2005Mechanism of the hydrogen/platinum(111) fuel cell
We discuss our recently proposed mechanism for the electro-oxidation/reduction on Pt(111) surfaces (J. Electroanal. Chem. 2002, 537, 7) in the presence of sulfuric acid. The bisulfate ion has a large dipole moment and is strongly adsorbed on the positive e ...
2004Observation of antihydrogen production in flight at CERN
The observation of the production of antihydrogen atoms H̄0 = p̄e+, the simplest atomic bound state of antimatter, is presented. A method has been used by the PS210 collaboration at LEAR which assumes that the production of H̄0 is predominantly mediated by ...
1997