LUCK: Recent submissions
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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 ... -
Water Fragmentation and Energy Loss by Carbon Ions at the Distal Region of the Bragg Peak
2007, HENALLUXArticle scientifiqueTime-of-flight mass spectrometry was used to investigate fragmentation and energy transfer processes in water by C ions at the distal part of the Bragg peak. Measurements of the positive ion fragments from ionization, electron capture, electron loss, transfer-loss and loss-ionization channels have allowed us for the first time (a) to obtain a quantitative determination of the energy lost by C ions ... -
L’histoire des sciences et des techniques, la philosophie des sciences, dans «La recherche», «Pour la science», «Revue d’histoire des sciences», «Revue des questions scientifiques» : 1937-1990. Bibliographie
Livre/Ouvrage ou monographieBibliographie des articles d'histoire des sciences, d'histoire des techniques et de philosophie des sciences parus dans ces quatre revues de vulgarisation -
Water-molecule dissociation by proton and hydrogen impact
2007, HENALLUXArticle scientifiqueTime-of-flight-based mass analysis of charged water fragments have been used to measure the dissociative and the nondissociative reaction pathways of water formed during collisions with 15 to 100 keV and 500 to 3500 keV H+ projectiles and with 8 to 100 keV H0 projectiles. The fragmentation pathways resulting from the ionization and the electron capture collisions with the incident H+ and H0 ... -
Rovibrational analysis of the XUV photodissociation of HeH + ions
2011, HENALLUXArticle scientifiqueWe investigate the dynamics of the photodissociation of the helium hydride ion HeH+ by XUV radiation with the aim to establish a detailed comparison with a recent experimental work carried out at the FLASH free electron laser using both vibrationally hot and cold ions. We determine the corresponding rovibrational distributions using a dissociative charge transfer setup and the same source conditions ... -
Ultrafast Relaxation Dynamics Observed Through Time-Resolved Photoelectron Angular Distributions
2010, HENALLUXArticle scientifiqueTime-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 ... -
Screening effects and total cross sections of single, double and triple ionization of neon by fast electrons
2008, HENALLUXArticle scientifiqueThe Bethe–Born theory is applied to estimate the effective charges experienced by the ejected electrons at single, double and triple ionization of neon by fast electrons. The expansion coefficients appearing in the asymptotic expressions for total cross sections σn+ ~ [an+ln(Ei/In+) + bn+]/Ei are determined by fitting to these expressions the experimental data for single and multiple ionization of ... -
Velocity-map imaging at low extraction fields
2012, HENALLUXArticle scientifiqueWe present a velocity-map imaging (VMI) setup for photoelectron imaging that utilizes low electric extraction fields. This avoids any complications that could arise from electrostatic interactions between the extraction field and the molecular properties that are probed and has a minimal effect on the trajectory of ions in ion beam experiments. By using an attractive potential supplied to the detector, ...