• Impact environnemental de la production et de l’utilisation de l’huile de colza triturée dans une exploitation agricole.Peer reviewedOpen access 

      2008, MAISSIN, J.-F.; LESCROART, Ralph, HENALLUXFoRS
      Article scientifique
      Cet article constitue une suite au travail de fin d’études consacré à la cogénération sur base d’huile de colza dans une ferme de production porcine située dans la commune de Tintigny en province de Luxembourg. Le colza produit dans cette exploitation agricole sert à la fois à la production et consommation locales du biocombustible et d’aliments pour bovins (tourteau). Le CO2 ainsi évité est ...
    • Toward real-time charged-particle image reconstruction using polar onion-peelingPeer reviewedClosed access 

      2009, LECOINTRE, Julien; Roberts, G. M.; Nixon, J. L.; Wrede, E.; Verlet, J. R. R., HENALLUX
      Article scientifique
      A method to reconstruct full three-dimensional photofragment distributions from their two-dimensional (2D) projection onto a detection plane is presented, for processes in which the expanding Newton sphere has cylindrical symmetry around an axis parallel to the projection plane. The method is based on: (1) onion-peeling in polar coordinates [Zhao et al., Rev. Sci. Instrum. 73, 3044 (2002)] in which ...
    • Absolute cross-sections and kinetic-energy-release distributions for electron-impact ionization and dissociation of CD +3Peer reviewedClosed access 

      2009, LECOINTRE, Julien; Belic, D. S.; Jureta, J. J.; Janev, R. K.; Defrance, P., HENALLUX
      Article scientifique
      Absolute cross-sections have been measured for electron-impact dissociative excitation and ionization of CD+3/(CH+3) leading to formation of singly-charged fragments (CD +2, CH+, C+, H +2 and D+). The animated crossed-beams method is applied in the energy range from the reaction threshold up to 2.5 keV. The maximum cross-sections are found to be (14.0±1.0)×10-17 cm2, (6.5± 0.7)×10-17 cm2, (3.3± ...
    • Absolute cross-sections and kinetic energy release distributions for electron-impact dissociation of D3+Peer reviewedClosed access 

      2009, LECOINTRE, Julien; Abdellahi El Ghazaly, M. O.; Jureta, J. J.; Belic, D. S.; Urbain, X.; Defrance, P., HENALLUX
      Article scientifique
      Absolute cross-sections for electron-impact dissociation of D+3 leading to the formation of D+ and D+2 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 (13.9 ± 1.1) × 10−17 cm2 and (8.2 ± 0.1) × 10−17 cm2 (around 50 eV) for D+ and for D+2 fragments, ...
    • Energy distributions of H+ fragments ejected by fast proton and electron projectiles in collision with H2O moleculesPeer reviewedClosed access 

      2009, LECOINTRE, Julien; de Barros, A. L. F.; Luna, H.; Shah, M. B.; Montenegro, E. C., HENALLUX
      Article scientifique
      Experimental measurements of the kinetic energy distribution spectra of H + fragment ions released during radiolysis of water molecules in collision with 20, 50, and 100 keV proton projectiles and 35, 200, 400, and 1000 eV electron projectiles are reported using a pulsed beam and drift tube time-of-flight based velocity measuring technique. The spectra show that H + fragments carrying a ...
    • Absolute cross-sections and kinetic-energy-release distributions for electron-impact ionization and dissociation of CD+ 2Peer reviewedClosed access 

      2009, Lecointre, J.; Belic, D. S.; Jureta, J. J.; Janev, R. K.; Defrance, P., HENALLUX
      Article scientifique
      Absolute cross-sections have been measured for electron-impact dissociative excitation and ionization of CD +2 leading to formation of CD 2+2, CD+, C+, D +2 and D+. The animated crossed-beams method is applied in the energy range from the reaction threshold up to 2.5 keV. The maximum total cross-sections are found to be (1.2±0.1)×10-17 cm2, (6.1±0.7)×10-17 cm2, (6.4±0.7)×10-17 cm2, (26.3±3.8)×10-19 ...
    • Dissociative excitation of NeD+Peer reviewedClosed access 

      2009, LECOINTRE, Julien; Ngassam, V.; Jureta, J.J.; Mitchell, J. B. A.; Orel, A. E.; Defrance, P., HENALLUX
      Article scientifique
      Measurements 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 ...
    • Cogénération : implantation sur un site en rénovation.Peer reviewedOpen access 

      2010, Lemmens, B., HENALLUXFoRS
      Article scientifique
      Cet article traite de toutes les étapes réalisées pour mener à bien un projet d’implantation d’un système de cogénération sur un ancien site militaire destiné à devenir un complexe regroupant des logements, hôtel, restaurant, centres de bien-être divers, école et autres services. Le bénéfice des certificats verts octroyés pour une cogénération de qualité, cumulé aux primes à l’investissement ...
    • Spectroscopy and dynamics of the 7,7,8,8-tetracyanoquinodimethaneradical anionPeer reviewedClosed access 

      2010, LECOINTRE, Julien; Roberts, G.M.; Horke, D.A.; Verlet, J.R.R., HENALLUX
      Article scientifique
      The photoelectron spectrum of the 7,7,8,8-tetracyanoquinodimethane (TCNQ) radical anion has been measured at 3.1 eV. Additionally, the ultrafast relaxation dynamics of the first excited state (12B3u) of TCNQ have been studied using time-resolved photoelectron spectroscopy, which reveals that it undergoes internal conversion back to the ground state (2B2g) with an associated lifetime of 650 fs ...
    • III. Electron-impact dissociative ionization of C2H +2 and C2D +2Peer reviewedClosed access 

      2010, LECOINTRE, Julien; Cherkani-Hassani, H.; Belic, D. S.; Jureta, J. J.; Defrance, P., HENALLUX
      Article scientifique
      Absolute cross-sections for electron-impact dissociative ionization of C2 H +2 and C2 D +2 to CH+, C+, C +2 , H+, CH +2 and C2D+ fragments are determined for electron energies ranging from the corresponding threshold to 2.5 keV. Results obtained in a crossed beams experiment are analyzed to estimate the contribution of dissociative ionization to each fragment formation. The dissociative ionization ...
    • II. Electron-impact dissociative excitation of C2H +2 and C2D +2Peer reviewedClosed access 

      2010, LECOINTRE, Julien; Cherkani-Hassani, H.; Belic, D. S.; Jureta, J. J.; Defrance, P., HENALLUX
      Article scientifique
      Absolute cross-sections for electron-impact dissociative excitation of C2H +2 and C2D +2 to C2D+, CH+, C+, C +2, H+ and CH +2 singly-charged fragments have been estimated. The animated crossed-beams method is applied in the energy range from the corresponding reaction threshold up to 2.5 keV. Individual contributions for dissociative excitation are determined from the analysis of the total absolute ...
    • Electron-impact dissociation and ionization of NH+: formation of N+ and N2+Peer reviewedClosed access 

      2010, LECOINTRE, Julien; Jureta, J.J.; Defrance, P., HENALLUX
      Article scientifique
      Absolute 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. ...
    • Ultrafast Relaxation Dynamics Observed Through Time-Resolved Photoelectron Angular DistributionsPeer reviewedClosed access 

      2010, LECOINTRE, Julien; Roberts, G.M.; Horke, D. A.; Verlet, J.R.R., HENALLUX
      Article scientifique
      Time-resolved photoelectron imaging of the 7,7,8,8-tetracyanoquinodimethane (TCNQ) radical anion is presented. Photoelectron angular distributions (PADs) are qualitatively analyzed in terms of the simple s-p model that is based on symmetry arguments. The internal conversion dynamics from the first excited state (12B3u) to the ground state (2B2g) may be observed through temporal changes in the PADs ...
    • I. Electron-impact ionization and dissociation of C2H +2 and C2D +2Peer reviewedClosed access 

      2010, LECOINTRE, Julien; Cherkani-Hassani, H.; Cherkani-Hassani, S.; Belic, D. S.; Jureta, J. J.; Defrance, P., HENALLUX
      Article scientifique
      Absolute cross-sections for electron-impact ionization and dissociation of C2H +2 and C2D +2 have been measured for electron energies ranging from the corresponding thresholds up to 2.5 keV. The animated crossed beams experiment has been used. Light as well as heavy fragment ions that are produced from the ionization and the dissociation of the target have been detected for the first time. The maximum ...
    • Electron-impact ionization and dissociation of C2D+Peer reviewedClosed access 

      2010, LECOINTRE, Julien; Cherkani-Hassani, H.; Cherkani-Hassani, S.; Belic, D. S.; Jureta, J. J.; Defrance, P., HENALLUX
      Article scientifique
      Absolute cross sections for electron-impact single ionization, dissociative excitation and dissociative ionization of the ethynyl radical ion (C2D+) have been measured for electron energies ranging from the corresponding reaction thresholds to 2.5 keV. The animated crossed electron-ion beam experiment is used and results have been obtained for the production of C2D2+, C2+, C+2, CD+, C+ and D+. The ...
    • Electron impact multiple ionization of argon ionsPeer reviewedClosed access 

      2010, LECOINTRE, Julien; Defrance, P.; Belic, D. S., HENALLUX
      Article scientifique
      Absolute 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+, ...
    • Etude d’une couche limite turbulente sous des gradients de pression variablesPeer reviewedOpen access 

      2011, GUERARD, J.-M., HENALLUXFoRS
      Article scientifique
      Le présent article décrit l’analyse d’une couche limite turbulente créée en soufflerie à la surface d’une plaque plane en plexiglas pour un flux d’air ayant un nombre de Reynolds Reθ compris entre 1900 et 3400, sous des conditions de dépression et de surpression. La variation de pression a été réalisée grâce à la contraction de la veine fluide dans laquelle les mesures ont été effectuées. Cet ...
    • Apprentissage autonome appliqué au domaine de la robotiquePeer reviewedOpen access 

      2011, BEAUDART, J., HENALLUXFoRS
      Article scientifique
      Ce travail explique comment implémenter dans un robot une capacité d’apprentissage telle que celle d’un enfant de 4 mois. Le principe est basé sur la création de vecteurs composés de 3 parties: un contexte (l’état des capteurs avant qu’une action soit réalisée), une action et enfin un résultat (l’état des capteurs après que l’action ait été réalisée). Le robot apprendra de ces associations ...
    • Isotope effects in electron-impact dissociation of D2H+Peer reviewedClosed access 

      2011, LECOINTRE, Julien; Jureta, J. J.; Defrance, P.; Urbain, X., HENALLUX
      Article scientifique
      Absolute cross sections have been measured using the crossed electron–ion beams method for electron-impact dissociation of the D2H+ molecular ion yielding H+, D+, HD+ and D+2 fragments. The collision energy ranges from a few eV up to 2.5 keV. Around the maximum, cross sections are found to be of a similar amplitude: (3.25 ± 0.08) × 10−17 cm2 for H+, (3.56 ± 0.15) × 10−17 cm2 for HD+ and (3.33 ± 0.11) ...
    • Electron-impact ionization of atomic hydrogen: dynamical variational treatmentPeer reviewedClosed access 

      2011, LECOINTRE, Julien; Defrance, P.; Kereselidze, T.; Machavariani, Z.S., HENALLUX
      Article scientifique
      A simple and straightforward calculating scheme is proposed for electron-impact single and multiple ionization of atoms. The method is based on the application of the Hulthén-Kohn dynamical variational principle. An effective charge seen by the scattered electron is determined for a certain type of trial wave functions mathematically in a rigorous way excluding any empirical assumptions. Validity ...