LUCK: Recent submissions
Voici les éléments 2101-2120 de 2527
-
Spectroscopy and dynamics of the 7,7,8,8-tetracyanoquinodimethaneradical anion
2010, HENALLUXArticle scientifiqueThe 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 ... -
Toward real-time charged-particle image reconstruction using polar onion-peeling
2009, HENALLUXArticle scientifiqueA 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 ... -
Low-Cost Sensors and Biological Signals
21 février 2021, CeREF TechniqueArticle scientifiqueEditorial of the Special issue Low-Cost sensors and Biological signals https://www.mdpi.com/journal/sensors/special_issues/LCSBS -
Electron-impact dissociative ionization of the molecular ion HDO + : A global view
2014, HENALLUXArticle scientifiqueWe present a combined experimental and theoretical study of the fragmentation of HDO2+ molecular ions produced by electron-impact ionization of HDO+ in the collision energy range 20–2500 eV. Experimental absolute partial inclusive cross sections for the production of OD+, OH+, and O+ are reported and compared successfully to theoretical predictions. Ab initio methods are used to calculate the ... -
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. ... -
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 ... -
Histoire du christianisme. 1re partie : De la naissance de l’Église au XIIIe siècle
SyllabusRégendat en français / religion -
Mgr Georges Lemaître, savant et croyant : actes du colloque commémoratif du centième anniversaire de sa naissance (Louvain-la-Neuve, le 4 novembre 1994). La physique d’Einstein : texte inédit de G. Lemaître
1996, Bossy, Lucien; Ladrière, Jean; Gérard, Jean-Marc; Lambert, Dominique; Leclerc, Marc; Pérez de Laborda, Alfonso; STOFFEL, Jean-François
, HE Louvain en Hainaut
Livre/Ouvrage ou monographieQue ce soit dans les ouvrages grand public ou dans les histoires érudites de la cosmologie contemporaine, l’apport fondamental de Georges Lemaître est trop souvent «oublié». Il s’agit là d’une situation regrettable tant au niveau historique que scientifique : d’une part, comment comprendre l’histoire de la cosmologie sans tenir compte de ses contributions ?, et d’autre part, ses écrits ne peuvent-ils ... -
Le réalisme : contributions au séminaire d’histoire des sciences 1993-1994
1996, Tihon, Anne; Draelants, Isabelle; Colinet, Andrée; Van den Abeele, Baudouin; Leurquin, Régine; Radelet-de Grave, Patricia; Van Tiggelen, Brigitte; Tilmans-Cabiaux, Chantal; Mawhin, Jean; Willem, Michel; Stoffel, Jean-François, HE Louvain en Hainaut
Livre/Ouvrage ou monographiePour des philosophes des sciences, le terme de «réalisme» évoque immédiatement un certain nombre de concepts («phénoménisme», «phénoménalisme», «conventionnalisme»...) et d’auteurs (Poincaré, Duhem, Meyerson, Koyré, Popper...). Mais qu’évoque-t-il chez les historiens des sciences ? Telle est la question que nous avons posée aux participants de ce séminaire en soumettant à leur réflexion ce terme que ... -
Bibliographie d’Alexandre Koyré
Livre/Ouvrage ou monographieL’itinéraire biographique d’Alexandre Koyré (1892-1964) est aussi complexe que son itinéraire intellectuel. Le premier nous conduit des bords de la mer d’Azov (Ukraine), lieu de sa naissance, à Princeton où, après la seconde guerre mondiale, il passera une bonne partie de son temps, en passant par Göttingen — berceau de la phénoménologie et centre réputé pour ses recherches mathématiques —, puis ... -
Pierre Duhem et ses doctorands : bibliographie de la littérature primaire et secondaire
Livre/Ouvrage ou monographiePhysicien théoricien, historien des théories physiques et philosophe de la physique, le savant catholique français Pierre Duhem (1861-1916), après avoir été injustement oublié, fit l’objet d’un premier regain d’intérêt dans les années cinquante, suite à la publication des quatre tomes posthumes de son monumental «Système du monde» et à celle de l’article retentissant de W. V. O. Quine sur «Les deux ... -
Learning the Physics of Einstein with Georges Lemaître : Before the Big Bang Theory
Livre/Ouvrage ou monographieThis book presents the first English translation of the original French treatise “La Physique d’Einstein” written by the young Georges Lemaître in 1922, only six years after the publication of Albert Einstein’s theory of General Relativity. It includes an historical introduction and a critical edition of the original treatise in French supplemented by the author’s own later additions and ... -
Le phénoménalisme problématique de Pierre Duhem
Livre/Ouvrage ou monographiePhysicien théoricien, philosophe de la physique et historien des théories physiques, le savant catholique français Pierre Duhem (1861-1916) a profondément marqué la pensée du vingtième siècle. Chacun connaît le «Système du monde», dont les dix volumes ont contribué à la redécouverte de la science médiévale, et «La théorie physique», qui a notamment donné lieu à la célèbre «thèse Duhem-Quine». Si ... -
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 ... -
Absolute cross sections and kinetic energy release distributions for electron-impact dissociative excitation and ionization of NeD+
2008, HENALLUXArticle scientifiqueAbsolute cross sections for electron impact dissociative excitation and ionization of NeD+ leading to the formation of singly and multiply charged products (D+, Ne+, Ne2+ and Ne3+) are reported, in the energy range from their respective thresholds to 2.5 keV. The animated crossed-beams method is used. For singly charged fragments, absolute cross sections are obtained separately for dissociative ... -
Electron-impact ionization of singly-charged neon ions
2008, HENALLUXArticle scientifiqueAbsolute cross sections for electron-impact single and multiple ionization of Ne+ leading to the formation of Neq+ (q = 2–5) are reported. The animated crossed beams method is applied in the energy range from the respective thresholds up to 2.5 keV. The maximum cross sections are found to be (4.12 ± 0.21) × 10−17 cm2, (1.42 ± 0.07) × 1018 cm2, (2.57 ± 0.14) × 10−20 cm2, (8.78 ± 0.54) × 10−22 cm2 for ... -
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 ... -
Multiple ionization of C+, N+ and O+ ions by fast electron impact
2013, 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. The animated crossed beam method is applied in the energy range extending from the respective thresholds up to 2.5 keV. The concerned target ions belong to the second row of the periodic table, with configurations ...