Joël Lemaire
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View article: VOCs conversion in He/H2O plasma produced in a micro-capillary tube at atmospheric pressure
VOCs conversion in He/H2O plasma produced in a micro-capillary tube at atmospheric pressure Open
A non-equilibrium plasma is created in a micro-capillary quartz tube (800 µm of internal diameter), by a DC-pulsed micro-Dielectric Barrier Discharge (micro-DBD) and the propagation of an ionisation wave, in mixtures of He/H2O/VOC at atmos…
View article: Argon pharmacokinetics: measurements in pigs and analysis in humans using a physiologically based pharmacokinetics model
Argon pharmacokinetics: measurements in pigs and analysis in humans using a physiologically based pharmacokinetics model Open
The primary objective of this study was to investigate the pharmacokinetics of inhaled argon in young pigs using mechanical ventilation. Also a physiologically based model of argon pharmacokinetics (PBPK) is validated with human data for x…
View article: Analysis of VOCs in Liquids through Vaporization in a Tubular Oven Monitored by Chemical Ionization Mass Spectrometry
Analysis of VOCs in Liquids through Vaporization in a Tubular Oven Monitored by Chemical Ionization Mass Spectrometry Open
The analysis of chemical compounds present at trace levels in liquids is important not only for environmental measurements but also, for example, in the health sector. The reference technique for the analysis of Volatile Organic Compounds …
View article: Monitoring of <i>n</i>-hexane degradation in a plasma reactor by chemical ionization mass spectrometry
Monitoring of <i>n</i>-hexane degradation in a plasma reactor by chemical ionization mass spectrometry Open
A DBD plasma is used to generate a multitude of by-products from the degradation of n -hexane molecules. The BTrap and other instruments follow n -hexane and organic by-products mixing ratios, allowing us to identify a large amount of mole…
View article: Argon pharmacokinetics
Argon pharmacokinetics Open
The noble gas argon has demonstrated biological activity that may prove useful as a medical intervention. Pharmacokinetics, the disposition of the drug molecule in the body through time, is fundamental necessary knowledge to drug discovery…
View article: Insights into non-thermal plasma chemistry of acetone diluted in N<sub>2</sub>/O<sub>2</sub> mixtures: a real-time MS experiment
Insights into non-thermal plasma chemistry of acetone diluted in N<sub>2</sub>/O<sub>2</sub> mixtures: a real-time MS experiment Open
Chemical Ionization Mass spectrometry is used to unveil in real-time sub-products formation during acetone degradation in a N 2 /O 2 homogeneous plasma reactor.
View article: Latest experimental and theoretical advances in the production of negative ions in caesium-free plasmas
Latest experimental and theoretical advances in the production of negative ions in caesium-free plasmas Open
This topical review gathers the last updates concerning caesium-free negative ion sources presented during the 63rd Course of the International school of Quantum Electronics of the Ettore Majorana Foundation and European collaborative work…
View article: Direct and Real-Time Analysis in a Plasma Reactor Using a Compact FT-ICR MS: Degradation of Acetone in Nitrogen and Byproduct Formation
Direct and Real-Time Analysis in a Plasma Reactor Using a Compact FT-ICR MS: Degradation of Acetone in Nitrogen and Byproduct Formation Open
Methods for reduction of volatile organic compounds (VOCs) content in air depend on the application considered. For low concentration and low flux, nonthermal plasma methods are often considered as efficient. However, the complex chemistry…
View article: Direct and real-time analysis in a plasma reactor using a compact FTICR/MS: degradation of acetone in nitrogen and by-products formation
Direct and real-time analysis in a plasma reactor using a compact FTICR/MS: degradation of acetone in nitrogen and by-products formation Open
Methods for reduction of Volatile Organic Compounds (VOCs) content in air depend on the 10 application considered. For low concentration and low flux, non-thermal plasma methods are often considered as efficient. However, the complex chemi…
View article: Infrared‐Assisted Synthesis of Prebiotic Glycine
Infrared‐Assisted Synthesis of Prebiotic Glycine Open
A novel approach has been developed to synthesize complex organic molecules (COMs) relevant to prebiotic chemistry, using infrared (IR) radiation to trigger the reaction. An original laboratory reactor working at low gas density and using …
View article: State-selected ion-molecule reactions with VUV synchrotron radiation : the O<sub>2</sub> <sup>+</sup> + C<sub>3</sub>H<sub>6</sub> case
State-selected ion-molecule reactions with VUV synchrotron radiation : the O<sub>2</sub> <sup>+</sup> + C<sub>3</sub>H<sub>6</sub> case Open
Synopsis O 2 + molecular ion is produced by photoionization close to threshold at SOLEIL, DESIRS beam line. By means of coincidence methods, ions are prepared in selected vibrational and electronic states (X, v=0,3,15 and a, v=3). Their re…
View article: Infra-Red Assisted Synthesis of Prebiotic Glycine
Infra-Red Assisted Synthesis of Prebiotic Glycine Open
In the present study, we have shown for the first time how glycine can be synthesized under prebiotic-like conditions using an Infra-Red laser to trigger the reaction. In particular, we observed that in the low-density conditions it can be…
View article: Infra-Red Assisted Synthesis of Prebiotic Glycine
Infra-Red Assisted Synthesis of Prebiotic Glycine Open
In the present study, we have shown for the first time how glycine can be synthesized under prebiotic-like conditions using an Infra-Red laser to trigger the reaction. In particular, we observed that in the low-density conditions it can be…
View article: Odorous volatile compounds conversion by electro-ceramic barrier discharge
Odorous volatile compounds conversion by electro-ceramic barrier discharge Open
International audience
View article: Compact FTICR Mass Spectrometry for Real Time Monitoring of Volatile Organic Compounds
Compact FTICR Mass Spectrometry for Real Time Monitoring of Volatile Organic Compounds Open
In this paper, we present a compact Fourier transform ion cyclotron resonance mass spectrometer (FTICR-MS) designed for real time analysis of volatile organic compounds (VOCs) in air or in water. The spectrometer is based on a structured p…
View article: Effects of the plasma-facing materials on the negative ion<i>H</i><sup>−</sup>density in an ECR (2.45 GHz) plasma
Effects of the plasma-facing materials on the negative ion<i>H</i><sup>−</sup>density in an ECR (2.45 GHz) plasma Open
International audience; Within the framework of fundamental research, the present work focuses on the role of surface material in the production of H− negative ion, with a potential application of designing cesium-free H− negative ion sour…
View article: Atlas of new and revised high-resolution spectroscopy of six CO isotopologues in the 101–115 nm range
Atlas of new and revised high-resolution spectroscopy of six CO isotopologues in the 101–115 nm range Open
Our knowledge of astronomical environments containing CO depends on accurate molecular data to reproduce and interpret observed spectra. The recent and future improvements of ultraviolet space instrumentation, both in sensitivity and resol…
View article: Detection of rovibrationally excited molecular hydrogen in the electronic ground state via synchrotron radiation
Detection of rovibrationally excited molecular hydrogen in the electronic ground state via synchrotron radiation Open
We describe an original setup named SCHEME (Source of exCited HydrogEn MolEcules) designed to study the recombinative desorption mechanisms of H atoms on a surface by means of high-brilliance monochromatic synchrotron radiation (SR). H ato…
View article: High-resolution study of oscillator strengths and predissociation rates for <sup>13</sup><b>C</b><sup>18</sup><b>O </b>
High-resolution study of oscillator strengths and predissociation rates for <sup>13</sup><b>C</b><sup>18</sup><b>O </b> Open
We carried out experiments at the SOLEIL synchrotron facility to acquire data for modelling CO photochemistry in the vacuum ultraviolet. We report oscillator strengths and predissociation rates for four vibrational bands associated with tr…
View article: Investigations of emissions of reactive substances NO<sub>2</sub> and NH<sub>3</sub> from passenger cars
Investigations of emissions of reactive substances NO<sub>2</sub> and NH<sub>3</sub> from passenger cars Open
Public concern and complaints regarding ambient air in zones of dense traffic pertains to two compounds of nitrogen, nitrogen dioxide (NO2) and ammonia (NH3); both are toxic and strongly irritant, such that legal limitations are under disc…
View article: Infrared Signature of DNA G-Quadruplexes in the Gas Phase
Infrared Signature of DNA G-Quadruplexes in the Gas Phase Open
DNA oligonucleotide ions forming G-quadruplex structures were studied in the gas phase using IRMPD spectroscopy. Data interpretation on these large biomolecule ions was made using carefully chosen control experiments. The major finding is …