A5085622663- Radiation Effects in Electronics
- Radiation Detection and Scintillator Technologies
- Electron and X-Ray Spectroscopy Techniques
- Radiation Therapy and Dosimetry
- Solar and Space Plasma Dynamics
- Ionosphere and magnetosphere dynamics
- Astro and Planetary Science
- Particle Detector Development and Performance
- Semiconductor materials and devices
- X-ray Spectroscopy and Fluorescence Analysis
- Nuclear Physics and Applications
- solar cell performance optimization
- Atomic and Molecular Physics
- Semiconductor Quantum Structures and Devices
- Advanced Sensor Technologies Research
- Surface Roughness and Optical Measurements
- Aluminum Alloy Microstructure Properties
- Multidisciplinary Science and Engineering Research
- Lightning and Electromagnetic Phenomena
- Metallurgical Processes and Thermodynamics
- Advanced Memory and Neural Computing
- Space Satellite Systems and Control
- Graphite, nuclear technology, radiation studies
- Spacecraft Design and Technology
- Metallurgy and Material Science
Université de Toulouse
2018-2024
Office National d'Études et de Recherches Aérospatiales
2016-2024
The effects of the space radiation on spacecraft materials and devices are significant design considerations for missions. In order to meet these challenges, environment must be understood. Measuring energetic particles in belts is therefore crucial, this why ICARE (Influence sur les Composants Avancés des Radiations de l'Espace) monitors have been developed over several decades. Two ICARE_NG² (for second version New Generation instrument) recently launched HotBird 13F 13G satellites at end...
With the increase of sensitivity devices to single-event upsets (SEUs), possibility trigger an upset with incident electrons has been recently raised. All mechanisms susceptible SEUs are investigated in detail. New measurements performed on field programmable gate array static random access memory based from Xilinx Spartan 6 at 1 MeV seem confirm two SEU regions transition located around 10 MeV.
The sensitivity of memory devices under proton irradiation has been extensively studied over the years. Two main mechanisms have identified to drive single-event upset (SEU) in last generation devices: direct ionization for low energies and inelastic nuclear reactions higher energies. Some papers shown that Coulomb elastic contribution should be considered. This paper supports this conclusion proposes analyses order show importance according technological node studied.
Abstract A modeling of the effect rings Jupiter on trapped >3‐MeV electrons and protons is proposed. The then added to physical model Salammbô discussed against in situ measurements obtained by Pioneer 11 Galileo Probe missions. It first shown that there no evidence an Jovian radiation belts, thanks new internal magnetic field proposed Juno mission. Two grain populations are studied: small grains, with a radius lower than 100 μm, not affect observable particles. normal optical depth...
Measurements of particle fluxes (protons and electrons) obtained with the Influence sur les Composants Avancées des Radiations de l'Espace for New Generation (ICARE_NG) monitor on Eutelsat 7C orbit [Electric Orbit Raising to Geostationary (GEO)] are presented. Several comparisons proposed other instruments [magnetic electron ion spectrometer (MagEIS), relativistic proton (RPS), magnetospheric sensors high (MPSH)] radiation models (AEP8, International Radiation Environment Near Earth (IRENE),...
The contribution of low-energy particles down to ~200 eV the dose deposited on very near surface materials subject space environment is investigated by means GEANT4 Monte Carlo simulations. dose, parts Global Radiation Earth ENvironment (GREEN) spectra (200 eV-40 keV for electrons, 200 eV-100 protons), compared with calculations performed AE8/AP8. Both geostationary earth orbit (GEO) and low (LEO) SPOT like orbits are studied. depth profiles estimated silicon material. impact calculation...
The Earth’s electron radiation environment is extremely dynamic. It reacts strongly to magnetic storms, increasing in some hours by several orders of magnitude a large energy range and decreasing slowly the recovery phase storm. For purpose spacecraft Electrical Orbit Raising (EOR), bring ion thruster propulsion-based satellites from launcher injection orbit geostationary orbit, it important estimate fluxes they can encounter during this long transfer phase. Using correlation between...
The simulation of charge collection in solid-state detectors (SSDs) can be carried out with technology computer-aided design (TCAD) or Shockley–Ramo paradigms. These two paradigms have their limitations when simulating a large variety cases, spanning from types radiation, energy ranges, substrate doping concentration, and applied bias. aim this article is to explore the limits these tools for ranges protons electrons Earth's radiation belts, as well establish benchmark different codes that...
This article proposes a method using electron and proton Single Event Upset sensitivities of device to deduce all simulation parameters related an RPP approach. It is shown that for 45-nm double data rate (DDR) memory, the approach still relevant crossing makes it possible constrain properly define associated parameters. Heavy ion prediction also presented.
The contribution of Coulomb processes induced by incident electrons in single event upset (SEU) sensitivity is investigated. case 65-nm silicon on insulator (SOI) memory studied. Several orbits (GPS, Jupiter Icy Moons Explorer's (JUICE's) orbits) are analyzed. relative importance to the total SEU rate electron, proton, and gamma environments compared. obtained during Earth missions. In environment Jupiter, equivalent sensitivities have been between studied device European Space Agency (ESA)...
Electric Orbit Raising (EOR) for telecommunication satellites significantly reduced on-board fuel mass at the price of extended transfer durations. These relatively long transfers, which usually span a few months, cross large spans radiation belts, resulting in significant exposure spacecraft to space radiations. Since they are not very populated, environment intermediate regions belts is less constrained than on popular orbits such as low Earth orbit or geostationary standard models. In...
Measurements of particle fluxes obtained with the latest version Influence sur les Composants Avancés des Radiations de l'Espace (ICARE), called ICARE_NG², onboard Hotbird 13F and 13G satellites, are presented. Compared to previous versions ICARE, a wider range energies is measured. Indeed, low-energy protons now available, down ~ 5 MeV. The missions consist Electric Orbit Raising (EOR) phases (launched at end 2023), followed by an operational orbit in Geostationary (GEO). EOR periods...
Eutelsat 7C (E7C), a telecommunication spacecraft, was launched on 21 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">st</sup> of June 2019 and reached geostationary (GEO) orbit four months later after quasi-equatorial electric raising (EOR) phase. An ICARE-NG (Influence sur les Composant Avancés des Radiations de l'Espace, Nouvelle Génération) radiation monitor implemented the spacecraft allowing measurements electron proton flux as well Single...
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An active shield using a scintillator and silicon photo-multipliers (SiPMs) has been developed to operate with space environment particle detectors sensitive both protons electrons, such as Influence sur les Composants Avancés des Radiations de l'Espace-Nouvelle Génération (ICARE-NG). The method shows reduction in electron contamination through the sides of detector, thus increasing energy resolution. Two geometries are studied, one working coincidence mode main detector other...