J. S. Ricol
A5045435127- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- Astrophysics and Cosmic Phenomena
- Particle physics theoretical and experimental studies
- Particle Detector Development and Performance
- Radiation Detection and Scintillator Technologies
- Atomic and Subatomic Physics Research
- Solar and Space Plasma Dynamics
- Quantum, superfluid, helium dynamics
- Muon and positron interactions and applications
- Nuclear Physics and Applications
- Nuclear physics research studies
- Advanced NMR Techniques and Applications
- Radiation Therapy and Dosimetry
- Atmospheric Ozone and Climate
- Particle accelerators and beam dynamics
- Astronomy and Astrophysical Research
- Cold Atom Physics and Bose-Einstein Condensates
- Ionosphere and magnetosphere dynamics
- Computational Physics and Python Applications
- Particle Accelerators and Free-Electron Lasers
- Adaptive optics and wavefront sensing
- Cosmology and Gravitation Theories
- Stellar, planetary, and galactic studies
Institut National de Physique Nucléaire et de Physique des Particules
2014-2024
Centre National de la Recherche Scientifique
2014-2024
Université Grenoble Alpes
2014-2024
Institut polytechnique de Grenoble
2013-2024
Laboratoire de Physique Subatomique et de Cosmologie
2013-2024
Laboratoire de Physique des deux infinis Bordeaux
2007-2019
Université de Bordeaux
2006-2019
Tohoku University
2005-2014
Université Joseph Fourier
2013
Aix-Marseille Université
2011
We present results of a study neutrino oscillation based on 766 ton-year exposure KamLAND to reactor anti-neutrinos. observe 258 \nuebar\ candidate events with energies above 3.4 MeV compared 365.2 expected in the absence oscillation. Accounting for 17.8 background events, statistical significance \nuebar disappearance is 99.998%. The observed energy spectrum disagrees spectral shape at 99.6% and prefers distortion from effects. A two-neutrino analysis data gives \DeltaMSq =...
The KamLAND experiment has determined a precise value for the neutrino oscillation parameter Deltam21(2) and stringent constraints on theta12. exposure to nuclear reactor antineutrinos is increased almost fourfold over previous results 2.44 x 10(32) proton yr due longer livetime an enlarged fiducial volume. An undistorted nu[over]e energy spectrum now rejected at >5sigma. Analysis of above inverse beta decay threshold, including geoneutrinos, gives best fit...
The possibility to probe new physics scenarios of light Majorana neutrino exchange and right-handed currents at the planned next generation neutrinoless double beta decay experiment SuperNEMO is discussed. Its ability study different isotopes track outgoing electrons provides means discriminate underlying mechanisms for by measuring half-life electron angular energy distributions.
The half-life for double-$\ensuremath{\beta}$ decay of $^{150}\mathrm{Nd}$ has been measured by the NEMO-3 experiment at Modane Underground Laboratory. Using 924.7 days data recorded with $36.55$ g $^{150}\mathrm{Nd}$, we $2\ensuremath{\nu}\ensuremath{\beta}\ensuremath{\beta}$ to be ${T}_{1/2}^{2\ensuremath{\nu}}=(9.{11}_{\ensuremath{-}0.22}^{+0.25}(\mathrm{stat}.)\ifmmode\pm\else\textpm\fi{}0.63(\mathrm{syst}.))\ifmmode\times\else\texttimes\fi{}{10}^{18}$ yr. observed limit on neutrinoless...
We report a measurement of the neutrino-electron elastic scattering rate from ${}^{8}$B solar neutrinos based on 123 kton-day exposure KamLAND. The background-subtracted electron recoil rate, above 5.5-MeV analysis threshold is 1.49 $\ifmmode\pm\else\textpm\fi{}$ 0.14(stat) 0.17(syst) events per kton-day. Interpreted as due to pure flavor flux with neutrino spectrum, this corresponds spectrum integrated 2.77 0.26(stat) 0.32(syst) $\ifmmode\times\else\texttimes\fi{}$10${}^{6}$...
We report results from the NEMO-3 experiment based on an exposure of 1275 days with 661 g (130)Te in form enriched and natural tellurium foils. The ββ decay rate is found to be greater than zero a significance 7.7 standard deviations half-life measured T(½)(2ν) = [7.0 ± 0.9(stat) 1.1(syst)] × 10(20) yr. This represents most precise measurement this yet published first real-time observation decay.
The Kamioka Liquid scintillator Anti-Neutrino Detector is used in a search for single neutron or two-neutron intranuclear disappearance that would produce holes the s-shell energy level of 12C nuclei. Such could be created as result nucleon decay into invisible modes (inv), e.g., n→3ν nn→2ν. deexcitation corresponding daughter nucleus results sequence space and time-correlated events observable liquid detector. We report on new limits one- disappearance: τ(n→inv)>5.8×1029 years...
This article reports the measurement of $^{235}$U-induced antineutrino spectrum shape by STEREO experiment. 43'000 antineutrinos have been detected at about 10 m from highly enriched core ILL reactor during 118 full days equivalent nominal power. The measured inverse beta decay is unfolded to provide a pure $^{235}$U in energy. A careful study unfolding procedure, including cross-validation an independent framework, has shown that no major biases are introduced method. significant local...
The PROSPECT and STEREO collaborations present a combined measurement of the pure ^{235}U antineutrino spectrum, without site specific corrections or detector-dependent effects. spectral measurements two highest precision experiments at research reactors are found to be compatible with χ^{2}/ndf=24.1/21, allowing joint unfolding prompt energy into energy. This ν[over ¯]_{e} spectrum is provided community, an excess events relative Huber model in 5-6 MeV region. When Gaussian bump fitted...
Different extensions of the standard model particle physics, such as braneworld or mirror matter models, predict existence a neutron sterile state, possibly dark candidate. This Letter reports new experimental constraint on probability p for conversion into hidden neutron, set by STEREO experiment at high flux reactor Institut Laue-Langevin. The limit is p<3.1×10^{-11} 95% C.L. improving previous factor 13. result demonstrates that short-baseline neutrino experiments can be used competitive...
SuperNEMO is a double-$\beta$ decay experiment, which will employ the successful tracker-calorimeter technique used in recently completed NEMO-3 experiment. implement 100 kg of isotope, reaching sensitivity to neutrinoless ($0\nu\beta\beta$) half-life order $10^{26}$ yr, corresponding Majorana neutrino mass 50-100 meV. One main goals and challenges detector development programme has been reach calorimeter energy resolution, $\Delta$E/E, around 3%/$sqrt(E)$(MeV) $\sigma$, or 7%/$sqrt(E)$(MeV)...
Two electron spectrometers have been developed for the characterisation of scintillating counters with MeV range electrons. These offer a monoenergetic beam ranging from 0.4 to 1.8 an energy resolution (FWHM) 1.0 ± 0.2% at 1 and linearity better than 2%. The transverse profile beams consists typical 3.0 mm Gaussian width. can automatically scan surfaces up 60 × 200 cm2 in increments. They used calorimeter module development SuperNEMO experiment.
The Integration and Verification Testing of the Large Synoptic Survey Telescope (LSST) Camera is described. LSST will be largest astronomical camera ever constructed, featuring a 3.2 giga-pixel focal plane mosaic 189 CCDs with in-vacuum controllers readout, dedicated guider wavefront CCDs, three element corrector 1.6-meter diameter initial optic, six optical filters covering wavelengths from 320 to 1000 nm novel filter exchange mechanism, camera-control data acquisition capable digitizing...