A5103061217- Spectroscopy and Laser Applications
- Atmospheric Ozone and Climate
- Particle accelerators and beam dynamics
- Atmospheric and Environmental Gas Dynamics
- Particle Accelerators and Free-Electron Lasers
- Advanced Chemical Physics Studies
- Superconducting Materials and Applications
- Atmospheric chemistry and aerosols
- Molecular Spectroscopy and Structure
- Magnetic confinement fusion research
- Laser-induced spectroscopy and plasma
- Laser Design and Applications
- Fusion materials and technologies
- Water Quality Monitoring and Analysis
- Visual perception and processing mechanisms
- Particle physics theoretical and experimental studies
- Color perception and design
- Advanced Measurement and Metrology Techniques
- Adaptive optics and wavefront sensing
- Neural and Behavioral Psychology Studies
- Nuclear Physics and Applications
- Astrophysics and Star Formation Studies
- Particle Detector Development and Performance
- Optical Systems and Laser Technology
Université de Montpellier
2025
Brookhaven National Laboratory
2020-2024
Michigan State University
2021
Conservatoire National des Arts et Métiers
2014
Université Toulouse III - Paul Sabatier
2013
Roche (France)
2013
Centre National de la Recherche Scientifique
2005-2013
Université de Toulouse
2013
University of Namur
2008-2009
Institut UTINAM
2007
The role of hybridization during speciation remains partially understood, yet introgression among lineages may trigger reproductive isolation (RI). Hybrid reveal how specific traits drive RI and characters are sorted following admixture. Here, we study hybrid in a complex butterfly species (Coenonympha spp.) which two (C. darwiniana C. cephalidarwiniana) received about 75% their genomes from arcania, 25% gardetta. By contrast with genomic ancestry compositions, mate readily minor parent...
Focusing on the species Turbo chrysostomus, study examined aspects of distribution, growth characteristics and resource management strategies. chrysostomus mainly inhabits low water areas to coral reefs with a depth 8 meters. The average Turban Shell height is 47.51 mm. theoretical maximum size 76.9 mm factor K = 1.17, monthly rate in first year 5.36 correlation between (H) weight (Wm) snail H -0.001*Wm + 0.8822. Notably, its pattern uneven, increasing faster than weight. Worryingly, wild...
Cooling of beams gold ions using electron bunches accelerated with radio-frequency systems was recently experimentally demonstrated in the Relativistic Heavy Ion Collider at Brookhaven National Laboratory. Such an approach is new and opens possibility this technique higher energies than possible electrostatic acceleration beams. The challenges include generation suitable for cooling, delivery required quality to cooling sections without degradation beam angular divergence energy spread,...
Context. The study of deuterated abundant molecules is recognized as important in understanding molecular complexity star-forming regions.
The model of exact trajectories involved in a semiclassical computation (vib)rotational linewidths and shifts is extended to the case asymmetric top colliders. General expressions for second-order contributions scattering matrix are given which define pressure broadening shift line. This theoretical approach tested on particular infrared ${\ensuremath{\nu}}_{7}$ band ${\text{C}}_{2}{\text{H}}_{4}$ broadened by ${\text{N}}_{2}$ frequently required atmospheric applications. computed compare...
We study the feasibility of storing cold neutron beams in a strong focusing synchrotron. also propose an alternating-current (ac) dipole magnet to be used as acceleration device and pulsed quadrupole beam kicker for injection extraction. The ac can provide adiabatic capture, acceleration, or deceleration beams. It seems feasible design high-quality synchrotron many future applications, such life time measurements, monoenergetic scattering experiments, pencil applications. This injector...
The Low Energy RHIC electron Cooling (LEReC) project at Brookhaven National Laboratory recently demonstrated for the first time cooling of hadron bunches with radio-frequency (rf) accelerated bunches. LEReC uses a high-voltage photoemission gun stringent requirements beam current, quality, and stability. has photocathode high-power fiber laser, novel cathode production, transport, exchange system. It been that can continually produce high-current quality suitable cooling. We describe...
A high-current high-brightness electron accelerator for low-energy RHIC cooling (LEReC) was successfully commissioned at Brookhaven National Laboratory. The LEReC includes a dc photoemission gun, laser system, photocathode delivery magnets, beam diagnostics, superconducting rf booster cavity, and set of normal conducting cavities to provide enough flexibility tune the in longitudinal phase space. Cooling with nonmagnetized accelerated beams requires corrections obtain small momentum spread...
Deviations of experimental millimetre-absorption line shapes from the usual Voigt profile are evidenced for two room-temperature rotational transitions J = 20 ← 19 (502 GHz) and 24 23 (602 nitrous oxide perturbed by nitrogen oxygen. These deviations shown to be due collisional narrowing processes encompassed more sophisticated speed-dependent or Galatry models. The deduced collision-regime broadening coefficients compared their theoretical estimations a semi-classical formalism. Even with...
Abstract Infrared C2H2–C2H2 and C2H2–N2 line-broadening coefficients are computed by means of a novel trajectory model based on the exact solutions classical equations motion. The traditional (parabolic straight-line) models readily obtained as limiting cases this new approach, allowing meaningful comparison all three basis common interaction potential. latter is taken sum composed long-range quadrupole–quadrupole interactions short-range atom–atom interactions. reported for R branch at room...
Abstract Argon broadening coefficients are measured for 32 vibrotational lines in the ν7 band of ethylene at room temperature using a tunable diode-laser spectrometer. These with 3 ≤ J 19, 0 Ka 4, 2 Kc 19 P, Q and R branches located spectral range 919–1023 cm−1. The fitting experimental line shapes Rautian profile provides collisional widths slightly larger than those derived from Voigt profile. independent theoretical estimation these is performed by semiclassical approach Robert-and-Bonamy...
Linestrengths, and nitrogen-collision-induced broadening pressure shift coefficients of methane's ν3-band singlet lines near 3.3 μm have been measured from direct absorption spectroscopy using a tunable cw OPO spectrometer.