Parcourir thématique/sous thématique "Physique, chimie, mathématiques & sciences de la terre"
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Compte rendu de Nicolas Beck : «En finir avec les idées reçues sur la vulgarisation scientifique»
01 janvier 2017, HE Louvain en HainautRapportCompte rendu de Nicolas Beck : «En finir avec les idées reçues sur la vulgarisation scientifique» -
Compte rendu de Patrick Tort : «Qu'est-ce que le matérialisme ? Introduction à l'analyse des complexes discursifs»
01 janvier 2017, HE Louvain en HainautAutreCompte rendu de Patrick Tort : «Qu'est-ce que le matérialisme ? Introduction à l'analyse des complexes discursifs» -
Compte rendu de Sabine Hossenfelder : «Lost in Maths : comment la beauté égare la physique»
01 janvier 2020, HE Louvain en HainautArticle scientifiqueCompte rendu de Sabine Hossenfelder : «Lost in Maths : comment la beauté égare la physique» -
Compte rendu de Stéphane Collion : «Voyage dans les mathématiques de l'espace-temps : trous noirs, big-bang, singularités»
01 mai 2019, HE Louvain en HainautRapportCompte rendu de Stéphane Collion : «Voyage dans les mathématiques de l'espace-temps : trous noirs, big-bang, singularités» -
Confronting Nationally Determined Contributions to IPPC’s +2°C Carbon Budgets through the Analyses of France and Wallonia Climate Policies
01 juin 2023, HE de la Province de LiègeArticle scientifiqueA method to objectively compare and link climate policies, expressed in CO2eq, to IPCC’s carbon budgets, expressed in CO2-only, is exhibited, as countries often omit to so in their Nationally Determined Contributions. Furthermore, they are usually pledging only towards territorial targets despite the fact that imported emissions are now greater in occidental countries, thus relying on the countries ... -
A crossed-beam experiment for electron impact ionization and dissociation of molecular ions: its application to CO+
2006, HENALLUXArticle scientifiqueA crossed electron–ion beam experimental set-up has been upgraded for the study of electron impact ionization and dissociation of molecular ions by means of ionic product detection. Both the experimental set-up and the data analysis procedures are described in detail for the estimation of (i) absolute cross sections, (ii) kinetic energy release distributions (KERD) and (iii) anisotropies of angular ... -
CRP on Atomic and Molecular Data for Plasma Modelling Volume 16
2014, HENALLUXArticle scientifiqueThis publication, arising from a Coordinated Research Project on Atomic and Molecular Data for Plasma Modelling, provides information on new data relevant to the edge region of plasmas in nuclear fusion energy devices. In this region, molecules and molecular ions are formed and react with electrons and with each other and fusion plasma modelling requires cross-sections and rate coefficients for such ... -
Design of salt-metal organic framework composites for seasonal heat storage applications
2017, HE Libre de Bruxelles Ilya PrigogineArticle scientifiqueJournal of Materials Chemistry A, 5, (2017), 12889-12898 -
Developing individual carbon footprint reduction pathways from carbon budgets: Examples with Wallonia and France
23 avril 2024, HE de la Province de LiègeArticle scientifiqueTraditional climate strategies focus on long-term emissions targets, neglecting cumulative CO2 emissions and often limiting their scope to territorial emissions. Additionally, individual citizens struggle to connect with community targets. This study addresses these issues by computing a comprehensive carbon footprint pathway that, as a main contribution, can be easily personalized and associated ... -
Differential and total cross sections of mutual neutralization in low-energy collisions of isotopes of H + + H −
2016, HENALLUXArticle scientifiqueMutual neutralization in the collisions of H+ and H− is studied both theoretically and experimentally. The quantum-mechanical ab initio model includes covalent states associated with the H(1)+H(n 3) limits and the collision energy ranges from 1 meV to 100 eV. The reaction is theoretically studied for collisions between different isotopes of the hydrogen ions. From the partial wave scattering ... -
Diffusion in Phase Space as a Tool to Assess Variability of Vertical Centre-of-Mass Motion during Long-Range Walking
06 février 2023, CeREF SantéCeREF TechniqueArticle scientifiqueWhen a Hamiltonian system undergoes a stochastic, time-dependent anharmonic perturbation, the values of its adiabatic invariants as a function of time follow a distribution whose shape obeys a Fokker–Planck equation. The effective dynamics of the body’s centre-of-mass during human walking is expected to represent such a stochastically perturbed dynamical system. By studying, in phase space, the ... -
Dissociative excitation of NeD+
2009, HENALLUXArticle scientifiqueMeasurements of NeD+ dissociative excitation cross section were obtained in Louvain-la-Neuve (UCL, Belgium) by using the animated crossed electron-ion beam method. The electronic structure of the system was calculated by using quantum chemistry calculations for the NeD+ ion and ab initio electron scattering calculations using the complex Kohn variational method for the resonant NeD neutral complex ... -
Distribution under elliptical symmetry of a distance-based multivariate coefficient of variation
janvier 2018, HE de la Province de LiègeArticle scientifiqueArticle -
Electron impact dissociation of ND+: formation of D+
2011, HENALLUXArticle scientifiqueNitrogen is a common contaminant species in fusion reactors such as the ITER (International Thermonuclear Experimental Reactor). Thus, the collisional properties of nitrogen-containing plasma compounds arewidely studiedexperimentally andtheoretically. Here we show the results of absolute cross section measurements for the electron impact dissociative excitation of ND+ yielding D+, especially ... -
Electron impact dissociation of ND+: formation of D+
2011, HENALLUXArticle scientifiqueAbsolute cross sections for electron impact dissociation of ND+ leading to the formation of D+ have been measured by applying the animated electron-ion beam method in the energy range from the reaction threshold up to 2.5 keV. The maximum inclusive cross section is observed to be (16.8 ± 0.8) × 10−17 cm2 at the electron energy of 65.1 eV. The appearance energy for the D+ production is measured to ... -
Electron impact ionization of thymine clusters embedded in superfluid helium droplets
2007, HENALLUXArticle scientifiqueEmbedding molecules in helium clusters has become a powerful technique for the preparation of cold targets for spectroscopy experiments, as well as for the assembly of complex, fragile molecular species. We have recently developed a helium cluster source and a pick-up cell to produce neutral beams of doped helium droplets, to be used as targets in studies on electron collisions with molecules of ... -
Electron impact multiple ionization of argon ions
2010, HENALLUXArticle scientifiqueAbsolute cross sections for electron impact single and multiple ionization of argon ions leading to the formation of Ar q + (q = 2–8) are reported. The animated crossed beam method is applied in the energy range extending from the respective thresholds up to 2.5 keV. The maximum cross sections for the multiply charged products Ar q + (q = 2–8) are measured to be (12.6 ± 0.6) × 10−17 cm2 for Ar2+, ... -
Electron impact multiple ionization of C+ and N+ and O+ ions
2014, HENALLUXArticle scientifiqueAbsolute cross sections for electron impact single and multiple ionization of C+, N+ and O+ ions leading to the formation of Cq+ (q=2-4), Nq+ (q=2-5) and Oq+ (q=2-5) are reported in the energy range extending from the respective thresholds up to 2.5 keV. The general feature of the measured cross sections is investigated. -
Electron-impact dissociation and ionization of NH+: formation of N+ and N2+
2010, HENALLUXArticle scientifiqueAbsolute cross sections for electron-impact dissociation and ionization of NH+ leading to the formation of N+ and N2+ products have been measured by applying the animated electron–ion beam method, in the energy range from the respective thresholds up to 2.5 keV. The maximum total cross sections are observed to be (15.7 ± 0.7) × 10−17 cm2 and (11.1 ± 0.2) × 10−18 cm2 for N+ and N2+, respectively. ... -
Electron-impact dissociation and ionization of OH+ and OD+ ions
2012, HENALLUXArticle scientifiqueAbsolute cross sections for electron impact ionization and dissociation of OH+ and OD+ leading to the formation of the OH2+, O+, O2+, O3+ and D+ ions have been measured by applying the animated electron-ion beam method in the energy range from the respective reaction thresholds up to 2.5 keV. The maximum of the single ionization cross section is found to be (0.95±0.02) × 10−19 cm2 at 155 eV. ...