0000000000785723

AUTHOR

A Cros

showing 2 related works from this author

Raman scattering study of the anharmonic effects in CeO2−ynanocrystals

2007

We have studied the temperature dependence of the F2g Raman mode phonon frequency and broadening in CeO2−y nanocrystals. The phonon softening and phonon linewidth are calculated using a model which takes into account the three-and four-phonon anharmonic processes. A detailed comparison of the experimental data with theoretical calculations revealed the predominance of four-phonon anharmonic processes in the temperature dependence of the phonon energy and broadening of the nanocrystals. On the other hand, three-phonon processes dominate the temperature behavior of phonons in polycrystalline samples. The anti-Stokes/Stokes peak intensity ratio was also investigated and found to be smaller for…

Condensed matter physicsPhononChemistryAnharmonicitySoft modesCondensed Matter::Mesoscopic Systems and Quantum Hall EffectCondensed Matter PhysicsCondensed Matter::Materials Sciencesymbols.namesakeLaser linewidthNanocrystalCondensed Matter::SuperconductivitysymbolsCondensed Matter::Strongly Correlated ElectronsGeneral Materials ScienceCrystalliteRaman spectroscopyRaman scatteringJournal of Physics: Condensed Matter
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The LOFT mission concept: a status update

2016

The Large Observatory For x-ray Timing (LOFT) is a mission concept which was proposed to ESA as M3 and M4 candidate in the framework of the Cosmic Vision 2015-2025 program. Thanks to the unprecedented combination of effective area and spectral resolution of its main instrument and the uniquely large field of view of its wide field monitor, LOFT will be able to study the behaviour of matter in extreme conditions such as the strong gravitational field in the innermost regions close to black holes and neutron stars and the supra-nuclear densities in the interiors of neutron stars. The science payload is based on a Large Area Detector (LAD, >8m2 effective area, 2-30 keV, 240 eV spectral resolut…

X-ray timing[ SDU.ASTR.GA ] Sciences of the Universe [physics]/Astrophysics [astro-ph]/Galactic Astrophysics [astro-ph.GA]Field of viewAstrophysics01 natural scienceslaw.inventionlawObservatorytiming010303 astronomy & astrophysicsQBPhysicsmicrochannel plates. PROPORTIONAL COUNTER ARRAYCALIBRATIONX-ray astronomyElectronic Optical and Magnetic MaterialApplied MathematicsAstrophysics::Instrumentation and Methods for AstrophysicsComputer Science Applications1707 Computer Vision and Pattern RecognitionX-ray detectorsCondensed Matter Physicscompact objectsX-ray spectroscopy[SDU.ASTR.GA]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Galactic Astrophysics [astro-ph.GA]spectroscopyCosmic Vision[ INFO ] Computer Science [cs]Silicon detectorAstrophysics::High Energy Astrophysical PhenomenaCondensed Matter PhysicTelescopeX-rayX-ray astronomySilicon detectors; spectroscopy; timing; X-ray astronomy; Electronic Optical and Magnetic Materials; Condensed Matter Physics; Applied Mathematics; Electrical and Electronic EngineeringSettore FIS/05 - Astronomia e Astrofisica0103 physical sciencesElectronic[INFO]Computer Science [cs]Optical and Magnetic MaterialsSpectral resolutionElectrical and Electronic EngineeringDETECTORta115X-ray astronomy Silicon detectors timing spectroscopy010308 nuclear & particles physicsX-ray imagingX-ray timing; X-ray spectroscopy; X-ray imaging; compact objects; X-ray detectors; microchannel plates. PROPORTIONAL COUNTER ARRAY; CALIBRATION; DETECTORApplied MathematicNeutron starQB460-466 AstrophysicsSilicon detectors; spectroscopy; timing; X-ray astronomy; Electronic Optical and Magnetic Materials; Condensed Matter Physics; Computer Science Applications1707 Computer Vision and Pattern Recognition; Applied Mathematics; Electrical and Electronic EngineeringSilicon detectors; spectroscopy; timing; X-ray astronomySilicon detectorsLarge Observatory For x-ray Timing (LOFT) Large Area Detector (LAD) Wide Field Monitor (WFM) Large Area Silicon Drift Detectors (SDD)Gamma-ray burst
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