A5043432632- Radiation Detection and Scintillator Technologies
- Nuclear Physics and Applications
- Atomic and Subatomic Physics Research
- Particle Detector Development and Performance
- Lanthanide and Transition Metal Complexes
- Nuclear reactor physics and engineering
- Medical Imaging Techniques and Applications
- Dendrimers and Hyperbranched Polymers
- Radioactive element chemistry and processing
- Radiation Therapy and Dosimetry
- Nuclear Materials and Properties
- Advanced NMR Techniques and Applications
- Metabolomics and Mass Spectrometry Studies
- Nanoparticle-Based Drug Delivery
- Electrocatalysts for Energy Conversion
- Graphene and Nanomaterials Applications
- Enzyme-mediated dye degradation
- Advanced Photocatalysis Techniques
- Advanced MRI Techniques and Applications
- Nanoparticles: synthesis and applications
- Advanced oxidation water treatment
- Lignin and Wood Chemistry
- Conducting polymers and applications
- Luminescence Properties of Advanced Materials
CEA LIST
2017-2024
Université Paris-Saclay
2021-2024
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2018-2024
Softmat - Chimie des colloïdes, polymères & assemblages complexes
2014-2020
CEA Paris-Saclay - Etablissement de Saclay
2019
CEA Paris-Saclay
2018-2019
Université de Toulouse
2014-2016
Infection et inflammation
2016
Centre National de la Recherche Scientifique
2014-2016
Université Toulouse III - Paul Sabatier
2016
Abstract We developed a method for the fabrication of novel biodegradable nanoparticles (NPs) from lignin which are apparently non‐toxic microalgae and yeast. compare two alternative methods synthesis NPs result in particles very different stability upon change pH. The first is based on precipitation low‐sulfonated an ethylene glycol solution by using diluted acidic aqueous solutions, yields that stable over wide range second approach high‐pH produces only at low Our study reveals...
Mixing double-hydrophilic block copolymers containing a poly(acrylic acid) with gadolinium ions in water leads to the spontaneous formation of polymeric nanoparticles. With an average diameter near 20 nm, nanoparticles are exceptionally stable, even after dilution and over large range pH ionic strength. High magnetic relaxivities were measured vitro for these biocompatible colloids, vivo resonance imaging on rats demonstrates potential utility such assemblies.
Core–shell(s) hyperbranched polymers were used to synthesize size-controlled gadolinium phosphate nanowires. An optimum particle size with high relaxivity values was evidenced.
An innovative strategy allowing the development of a new generation easy-to-prepare and easy-to-use nano-sized catalysts with high tenability is presented. This based on formation hybrid polyion complexes (HPICs) from complexation copper block copolymer consisting an ionizable complexing neutral stabilizer block. These have well-defined structure size hydrodynamic diameter around 29 nm. They are stable in aqueous solution over pH range 4 to 8 not sensitive NaCl salt addition or dilution...
This article presents a procedure for optimizing the charge comparison method (CCM) used pulse shape discrimination (PSD). Without prior knowledge of signals or readout system, our automatically optimizes integration periods maximizing ability radiation detector. is innovative in its adaptability and automation without being complicated to implement on standard computer. Another advantage this approach possibility use it even if operation system recording process signal not fully known....
Core–shell and core–multishell nanocarriers were designed to transport copper ions into cells. Herein, we present their synthesis physicochemical characterization demonstrate the high influence of architectures on loading release copper. Their low toxicity may open a new way balance Cu-homeostasis in neurodegenerative diseases.
<sup>6</sup>Li-Doped plastic scintillators (PSs) have been optimized as radioluminescent sensors for detection of fast/thermal neutrons and gamma rays several purposes such homeland security.
We report herein the synthesis of a new series plastic scintillators (PSs) loaded with <sup>6</sup>Li<sub>2</sub><sup>10</sup>B<sub>4</sub>O<sub>7</sub> nanoparticles (NPs), as radioluminescent sensors for fast/thermal neutron and gamma ray detection in critical context homeland security.
When new materials appear as potential alternatives for radiation detection, several criteria have to be fulfilled.
We report the investigations made on use of pixelated plastic scintillator (PS) and silicon photomultipliers (SiPMs) array applied to coded aperture gamma-neutron imaging. Specifically, verification ability a multiplexing readout discriminate localize neutron interactions was studied. In its intended configuration, imager design consists aligned with matrix <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math...
Taking advantage of lanthanide chemistry and coordination dynamics, a method was elaborated to embed high amounts organometallic complexes inside polymeric matrix. The use carbonylated cross‐linker allows more than 10‐fold increase the solubility in monomeric solution, which can afford samples reaching up 1 wt% incorporation lanthanides atoms. Derivatives these were used as plastic scintillators observe total gamma‐ray absorption (Photoelectric [PE] effect) 241 Am source. analysis conducted...
In the nuclear safety and radiation protection context, identification of neutron sources knowledge dose rate, which require an accurate measurement energy spectrum, are needed. This study highlights potential chemically modified plastic scintillators as a spectrometer. These detectors offer possibility to determine spectrum source from measured pulse height by using deconvolution method. our work, we use homemade scintillator able discriminate fast neutrons gamma rays. The MLEM (Maximum...
This work presents a new system dedicated to the measurement of energy spectra from radionuclide-based neutrons sources (ex. AmBe, PuBe, <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">252</sup> Cf). The experimental device consists large-volume polyethylene container that is equipped with central channel accommodating source be measured and 12-measurement channels (in spiral formation) around source, into which detectors can placed. filled...
Fast neutron imaging spectrometry is an effective way for locating and identifying sources in the nuclear industry field. To achieve this goal, a compact imager was developed specifically purpose, using pixelated plastic scintillator coupled with SiPM (Silicon Photomultiplier) MURA (Modified Uniformly Redundant Array) coded mask. The imager's sensitivity confirmed by obtaining image of Cf-252 source emitting 1.12 × 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML"...
In the context of high-energy physics experiments, particle accelerators create a significant dose radiations, up to 10 6 Gy for example at Large Hadron Collider (LHC, Cern).Control detectors, such as scintillators, are affected by these high irradiation levels.The literature mentions that light yield organic scintillators dramatically drops when strongly irradiated.However, tested can recover some their output with time.To best our knowledge, only luminescent properties plastic were...