BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//FeRMI - ECPv6.15.20//NONSGML v1.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-WR-CALNAME:FeRMI
X-ORIGINAL-URL:https://fermi.univ-tlse3.fr
X-WR-CALDESC:Évènements pour FeRMI
REFRESH-INTERVAL;VALUE=DURATION:PT1H
X-Robots-Tag:noindex
X-PUBLISHED-TTL:PT1H
BEGIN:VTIMEZONE
TZID:Europe/Paris
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:20230326T010000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
TZNAME:CET
DTSTART:20231029T010000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:20240331T010000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
TZNAME:CET
DTSTART:20241027T010000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:20250330T010000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
TZNAME:CET
DTSTART:20251026T010000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20241104T140000
DTEND;TZID=Europe/Paris:20241104T160000
DTSTAMP:20260514T220618
CREATED:20241030T101906Z
LAST-MODIFIED:20241030T102248Z
UID:11125-1730728800-1730736000@fermi.univ-tlse3.fr
SUMMARY:Des doutes d'Einstein aux bits intriqués : la seconde révolution quantique. - (Alain ASPECT / séminaire/ SFP). - 4/11/2024\, 14H
DESCRIPTION:Alain ASPECT (Institut d’Optique Graduate School\,Université Paris-Saclay) \nprix Nobel de Physique 2022 \nLieu : Amphi Vinci (bât. 20\, INSA) \nPrésentation :\nLa première révolution quantique\, basée sur le concept de dualité onde-particule\, a été une révolution conceptuelle\, scientifique et technologique. Plus récemment\, les doutes d’Einstein sur le formalisme quantique ont conduit à la mise en évidence du caractère révolutionnaire du concept d’intrication quantique\, et à des progrès scientifiques inédits. On nous promet des applications technologiques fascinantes de l’intrication. L’impact sur la société sera-t-il suffisant pour que l’on puisse pleinement parler d’une nouvelle révolution quantique ? \nVisio ici : lien Teams \nAFFICHE_SFP_Alain_ASPECT_04_11_2024 \n  \n\n \n \n 
URL:https://fermi.univ-tlse3.fr/event/des-doutes-deinstein-aux-bits-intriques-la-seconde-revolution-quantique-alain-aspect-seminaire-sfp-4-11-2024-14h/
CATEGORIES:Events,Seminars,SFP / SFC
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20241106T110000
DTEND;TZID=Europe/Paris:20241106T123000
DTSTAMP:20260514T220618
CREATED:20241029T140535Z
LAST-MODIFIED:20241030T073520Z
UID:11117-1730890800-1730896200@fermi.univ-tlse3.fr
SUMMARY:Seeing is Believing: From molecular reactions to nanomachines. - (Dominik Lungerich /  Seminar / CEMES). - 6/11/2024\, 11H
DESCRIPTION:Séminaire du CEMES\n \nDominik Lungerich\,  Center for Nanomedicine (CNM)\, Institute for Basic Science (IBS)\, Seoul South Korea and Graduate Program of Nano Biomedical Engineering (Nano BME)\, Advanced Science Institute\, Yonsei University\, Seoul\, South Korea  \nhttps://www.lungerichlab.com/
URL:https://fermi.univ-tlse3.fr/event/seeing-is-believing-from-molecular-reactions-to-nanomachines-dominik-lungerich-seminar-cemes-6-11-2024-11h/
LOCATION:salle de conférence du CEMES\, CEMES - 29\, rue Jeanne Marvig BP 94347\, Toulouse\, 31055\, France
CATEGORIES:CEMES,Events,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20241107T140000
DTEND;TZID=Europe/Paris:20241107T170000
DTSTAMP:20260514T220618
CREATED:20241028T122300Z
LAST-MODIFIED:20241030T073527Z
UID:11109-1730988000-1730998800@fermi.univ-tlse3.fr
SUMMARY:Modélisation d'agrégats d'hydrocarbures aromatiques polycycliques et d'eau : croissance et dissociation.  - (Héloïse Leboucher  / LCPQ / Thèse). - 7/11/2024\, 14H00
DESCRIPTION:Soutenance de thèse \nHéloïse Leboucher   LCPQ\, Salle de conférence\, 3R4 \nSummary:\nPolycyclic aromatic hydrocarbons (PAHs) are a family of molecules that present several research interests\, especially in astrochemistry. Interdisciplinary studies between experiment\, theory and astronomic observations are mandatory to gain insights into the physical and chemical processes in which they are involved. New observations made by the James Webb Space Telescope (JWST) reveal that PAHs and water are present in the same interstellar region. Thus\, this thesis focuses on the theoretical study of mixed PAH-water clusters\, where the PAH of interest is the pyrene (C16H10). It addresses two main issues: (i) their structural\, energetic and spectroscopic properties whether the systems are neutral or charged\, and (ii) their growth and dissociation processes in the protonated case. To handle these large and complex systems and be able to run intensive simulations\, the chosen method for the electronic structure calculations is the Density Functional based Tight-Binding method (DFTB)\, as implemented in the deMonNano code. This thesis work provides new and relevant molecular data that should contribute to improving the description of gas-grain interactions and be used to feed astrophysical models. \nJury composition: \n\nCéline Toubin (Université de Lille)\nCyril Falvo (Université Paris Saclay)\nLudovic Biennier (Université de Rennes)\nSabine Morisset (Université Paris Saclay)\nChristine Joblin (Université de Toulouse)\nAude Simon (Université de Toulouse)\nMathias Rapacioli (Université de Toulouse)\n\n  \n\n \n \n 
URL:https://fermi.univ-tlse3.fr/event/modelisation-dagregats-dhydrocarbures-aromatiques-polycycliques-et-deau-croissance-et-dissociation-heloise-leboucher-lcpq-these-7-11-2024-14h00/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,HDR / Thesis,LCPQ
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20241112T140000
DTEND;TZID=Europe/Paris:20241112T153000
DTSTAMP:20260514T220618
CREATED:20241027T093701Z
LAST-MODIFIED:20241030T073538Z
UID:10949-1731420000-1731425400@fermi.univ-tlse3.fr
SUMMARY:Modes zéro forts dans les circuits quantiques intégrables. - (Eric Vernier / LPT / Seminar). - 12/11/2024\, 14H
DESCRIPTION:Eric Vernier (LPSM) \nSeminar LPT\, 12/11/2024\, 14H\, 3R1\, seminar room\, 3rd floor \nAbstract :\nIt is a classic result that certain interacting integrable spin chains host robust edge modes known as strong zero modes (SZMs). In this Letter\, we extend this result to the Floquet setting of local quantum circuits\, focusing on a prototypical model providing an integrable Trotterization for the evolution of the XXZ Heisenberg spin chain. By exploiting the algebraic structures of integrability\, we show that an exact SZM operator can be constructed for these integrable quantum circuits in certain regions of parameter space. Our construction\, which recovers a well-known result by Paul Fendley in the continuous-time limit\, relies on a set of commuting transfer matrices known from integrability\, and allows us to easily prove important properties of the SZM\, including normalizabilty. Our approach is different from previous methods and could be of independent interest even in the Hamiltonian setting. Our predictions\, which are corroborated by numerical simulations of infinite-temperature autocorrelation functions\, are potentially interesting for implementations of the XXZ quantum circuit on available quantum platforms.
URL:https://fermi.univ-tlse3.fr/event/modes-zero-forts-dans-les-circuits-quantiques-integrables-eric-vernier-lpt-seminar-15-10-2024-14h/
LOCATION:salle de séminaire 3ème étage\, Bâtiment 3r1 Université Toulouse III\, Toulouse\, 31400\, France
CATEGORIES:Events,LPT,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20241115T140000
DTEND;TZID=Europe/Paris:20241115T170000
DTSTAMP:20260514T220618
CREATED:20241107T151806Z
LAST-MODIFIED:20241114T085504Z
UID:11131-1731679200-1731690000@fermi.univ-tlse3.fr
SUMMARY:Étude de la localisation de la déformation à 650°C et de son impact sur la rupture intergranulaire assistée par oxydation: cas de l'Alliage 718. - (Malo JULLIEN / CEMES / These). - 15/11/2024\, 14H00
DESCRIPTION:Soutenance de thèse \nMalo JULLIEN\, CEMES\, salle de conférence \nCompositition du jury: \n\n\nM. Damien TEXIER : Institut Clément Ader – CNRS UMR 5312 – Directeur de thèse\nM. Marc LEGROS : CEMES – CNRS UPR 8011 – Co-directeur de thèse\nM. Patrick VILLECHAISE : Institut Pprime – CNRS UPR 3346 – Rapporteur\nM. Xavier FEAUGAS : Laboratoire des Sciences de l’Ingénieur pour l’Environnement (LaSie) – UMR CNRS 7356 – Rapporteur\nM. Xavier MAEDER : EMPA – Examinateur\nMme Dominique POQUILLON : CIRIMAT – UMR CNRS 5085 – Examinatrice\nM. Guillaume KERMOUCHE : Laboratoire Georges Friedel – UMR CNRS 5307 – Examinateur\n\n\nRésumé : \nL’Alliage 718 est un superalliage base nickel de référence\, largement utilisé dans la fabrication de composants structurels\, parfois critiques\, tels que les disques de turbine des turboréacteurs. Cet alliage est connu pour fortement localiser la déformation. Cette localisation peut être responsable d’un endommagement précoce en service. Pour le secteur aéronautique\, les contraintes écologiques imposent une augmentation des températures de service. Il est alors essentiel d’identifier le rôle que joue le paysage de déformation à l’échelle de la microstructure sur l’endommagement assisté ou non par l’oxydation à ces températures. L’objectif premier de cette thèse est de comprendre comment la microstructure et les vitesses de chargement mécanique affectent le paysage de déformation à haute température. Le second est de lier ce paysage de déformation au comportement mécanique et aux caractéristiques de rupture observées lors d’essais de tractions à 650°C. Les travaux expérimentaux présentés dans ce manuscrit reposent principalement sur la technique de corrélation d’images numériques haute résolution qui permet de capter la réponse mécanique locale de la microstructure sur des régions statistiquement représentatives de la microstructure; en opposition à des techniques micromécaniques plus locales. Ces travaux ont permis de montrer qu’à 650°C dans l’Alliage 718\, la déformation est répartie entre les joints de grains et des bandes de glissement à l’intérieur des grains. Cette répartition dépend à la fois de la sollicitation mécanique et de la microstructure. Une taille de grains grossière favorise le glissement intragranulaire alors qu’une microstructure plus fine favorise la localisation de la déformation aux joints de grains. De même\, en traction à faible vitesse de déformation\, la localisation aux joints de grains est privilégiée alors qu’à plus haute vitesse de déformation et lorsque le phénomène de Portevin-Le-Chatelier a lieu\, le glissement intragranulaire est majoritaire. Lors d’essais de traction sous air à 650°C\, seule la localisation aux joints de grains entraine un abattement conséquent de la ductilité. Cependant\, plus que l’activité plastique des joints de grains\, il est montré que c’est la répartition des événements et leurs interactions qui sont responsables de la rupture intergranulaire assistée par oxydation et la perte de ductilité associée. Cette approche micromécanique associée à l’endommagement local de la matière amène un regard nouveau et intéressant sur le couplage oxydation-mécanique opérant à l’échelle de la microstructure dans cet alliage.
URL:https://fermi.univ-tlse3.fr/event/etude-de-la-localisation-de-la-deformation-a-650c-et-de-son-impact-sur-la-rupture-intergranulaire-assistee-par-oxydation-cas-de-lalliage-718-malo-jullien-cemes-these-15-11-2024-1/
LOCATION:salle de conférence du CEMES\, CEMES - 29\, rue Jeanne Marvig BP 94347\, Toulouse\, 31055\, France
CATEGORIES:CEMES,Events,HDR / Thesis
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20241119T140000
DTEND;TZID=Europe/Paris:20241119T153000
DTSTAMP:20260514T220618
CREATED:20241119T071418Z
LAST-MODIFIED:20241119T084653Z
UID:11041-1732024800-1732030200@fermi.univ-tlse3.fr
SUMMARY:Effets topologiques et géométriques dans les électrons et les photons. - (Kang Yang / LPT / Seminar). - 19/11/2024\, 14H
DESCRIPTION:Kang Yang (Université libre de Berlin) \nSeminar LPT\, 19/11/2024\, 14H\, 3R4\, salle de conférence \nSummary :\nTopology and geometry help us understand many physical phenomena. Their broad applicability without resort to explicit parameters leads to a variety of simple universal behaviours. In this presentation\, I will introduce some geometric effects in correlated electrons and topological effects in photonic band structures. In the first part\, I will show how geometry of quantum states can help us understand electrons in flat bands. Such systems are dominated by interactions and host intriguing states with fractional statistics. I will show how nonuniform quantum distances between the Bloch states lead to emergent particle-hole asymmetry and serve as a guideline to the interacting phase diagram. This has several applications in twisted moiré systems. In the second part\,I will go to my recent work on photonic bands\, where dissipation can be modelled by simple non-Hermitian evolution. I will briefly introduce my recent classification. This leads to generic nodal points carrying non-Abelian charges and topology duality in quantum states. These phenomena are realised experimentally through a single-photon interferometry. \n\n\n\n 
URL:https://fermi.univ-tlse3.fr/event/tba-kang-yang-lpt-seminar-19-11-2024-14h/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,LPT,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20241122T110000
DTEND;TZID=Europe/Paris:20241122T123000
DTSTAMP:20260514T220618
CREATED:20241118T135301Z
LAST-MODIFIED:20241119T084704Z
UID:10930-1732273200-1732278600@fermi.univ-tlse3.fr
SUMMARY:Introduction à la psychoacoustique. - (Julien Tardieu / FeRMI / Séminaire). - 22/11/2024\, 10H30
DESCRIPTION:Séminaires d’ouverture FeRMI\n \nJulien Tardieu\,   Plateforme Cognition\, Comportement et Usages : Maison des Sciences de l’Homme et de la Société – Toulouse \nRésumé :\nPour mieux comprendre comment l’humain perçoit les sons qui l’entourent et leur donne du sens\, nous aborderons les principales caractéristiques de la perception sonore. Une première partie sera consacrée à la physiologie du système auditif (ex: oreille interne\, cerveau auditif)\, et une deuxième partie sera consacrée aux capacités auditives (ex: perception de la hauteur\, de l’intensité ou de la localisation d’un son). \n 
URL:https://fermi.univ-tlse3.fr/event/psycho-accoustique-julien-tardieu-fermi-seminaire-22-11-2024-11h/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,FeRMIsem,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20241126T140000
DTEND;TZID=Europe/Paris:20241126T170000
DTSTAMP:20260514T220618
CREATED:20241126T063509Z
LAST-MODIFIED:20241126T081945Z
UID:11167-1732629600-1732640400@fermi.univ-tlse3.fr
SUMMARY:Etude de la dynamique d’évolution en température des interfaces de collage de substrats SiC pour l’électronique. - (Maëlle Le Cunff / CEMES / These). - 26/11/2024\, 14H00
DESCRIPTION:Soutenance de thèse \nMaëlle Le Cunff\, Salle de conférence du Bât. 3R4 \nCompositition du jury: \n\n\n\n\nM. Gabriel FERRO – Directeur de recherche\, LMI-CNRS (Rapporteur)\nM. Frédéric LEROY – Rapporteur – Professeur\, Aix Marseille Université\nM. Jérémie GRISOLIA – Examinateur – Professeur\, INSA Toulouse\nMme. Marie-France BEAUFORT – Examinatrice – Directeur de recherche\, Institut PPrime\nM. Marcin ZIELINSKI – Examinateur – Ingénieur\, Novasic-Soitec\nM. Nikolay CHERKASHIN – Directeur de thèse – Directeur de recherche\, CEMES\nM. Didier LANDRU – Invité – Co-encadrant industriel\, Ingénieur\, SOITEC\nMme. Julie WIDIEZ – Invité – Ingénieur\, CEA-LETI
URL:https://fermi.univ-tlse3.fr/event/etude-de-la-dynamique-devolution-en-temperature-des-interfaces-de-collage-de-substrats-sic-pour-lelectronique-maelle-le-cunff-cemes-these-26-11-2024-10h00/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:CEMES,Events,HDR / Thesis
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20241127T140000
DTEND;TZID=Europe/Paris:20241129T120000
DTSTAMP:20260514T220618
CREATED:20241125T091453Z
LAST-MODIFIED:20241126T081952Z
UID:11161-1732716000-1732881600@fermi.univ-tlse3.fr
SUMMARY:Theory days on Computational tools in physics : performances vs. reproducibility . - (Meeting / LPT)\, 27-29/11/2024
DESCRIPTION:Organizers : M. Belkacem\, P. M. Dinh\, and E. Suraud \nAim and objectives\nFollowing the tradition of the previous successful meetings that have started in 2009\, the Theory Days workshop aims at stimulating constructive discussions\, collaborations\, and knowledge exchange among a selected group of theoreticians. This year\, the 16th edition will be dedicated to Computational tools in physics : performances vs. reproducibility. \nThe development of computational codes for structure and dynamics of electronic systems is experiencing new directions of research in relation to the growing availability of artificial intelligence tools. Machine learning is now applied to numerous computational issues in physics and chemistry\, such as for example structure optimization in clusters and molecules. The aim of this year meeting is to address this question in the specific context of dynamical problems\, on the basis of existing computational softwares. To restrict the field\, we shall focus on fully dynamical approaches allowing us to address dynamical scenarios beyond the domain of linear response. The meeting will thus try to summarize today’s situation in the field\, by considering dedicated questions raised by dynamical codes. \nThe problem of reproducibility is becoming a major issue in computational science. The issue is becoming especially important because of the ever increasing complexity of the codes and as computations become bigger and bigger up to a point at which it may become too expansive to make systematic checks. It thus raises the key question of how large differences can be acceptable between results obtained from a given code using various “reasonable’’ parameters and/or various machines. There is a hardware aspect and a physical aspect. We shall try in the meeting to address both aspects on typical examples. \nWe plan to gather people from various groups working in this domain\, mostly in western Europe. The workshop is intended to be a working forum\, thus rather informal. The format will consist in a series of long detailed talks\, typically 1 hour (40 mn talk + 10 mn for questions) focusing in particular on ongoing problems and open issues. We thus urge participants to prepare their talks in this spirit. Ultimately a most efficient organization would consist in having a limited number of talks per representative group in order to avoid doublings. \nsee more details : here
URL:https://fermi.univ-tlse3.fr/event/theory-days-on-computational-tools-in-physics-performances-vs-reproducibility-meeting-lpt-27-29-11-2024/
LOCATION:salle de séminaire 3ème étage\, Bâtiment 3r1 Université Toulouse III\, Toulouse\, 31400\, France
CATEGORIES:Events,LPT,Symposium / Congress
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20241128T133000
DTEND;TZID=Europe/Paris:20241128T180000
DTSTAMP:20260514T220618
CREATED:20241104T154411Z
LAST-MODIFIED:20241114T085430Z
UID:11078-1732800600-1732816800@fermi.univ-tlse3.fr
SUMMARY:Jeudi 28 Novembre 2024\, 14h au CEMES : Vivez une demie journée consacrée à des techniques avancées autour de la microscopie électronique à transmission
DESCRIPTION:Jeudi 28 Novembre 2024\, 14h00 au CEMES : Vivez une demie journée consacrée à des techniques avancées autour de la microscopie électronique à transmission
URL:https://fermi.univ-tlse3.fr/event/jeudi-28-novembre-2024-13h30-au-cemes-vivez-une-demie-journee-consacree-a-des-techniques-avancees-autour-de-la-microscopie-electronique-a-transmission/
LOCATION:salle de conférence du CEMES\, CEMES - 29\, rue Jeanne Marvig BP 94347\, Toulouse\, 31055\, France
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20241128T140000
DTEND;TZID=Europe/Paris:20241128T153000
DTSTAMP:20260514T220618
CREATED:20241124T081906Z
LAST-MODIFIED:20241126T082005Z
UID:11183-1732802400-1732807800@fermi.univ-tlse3.fr
SUMMARY:Magnetic fluctuations in strongly correlated systems: from toy models to realistic materials simulations. - (Maria Chatzieleftheriou / LCPQ/ Séminaire). - 28/11/2024\, 14H00
DESCRIPTION:Séminaire LCPQ \nMaria Chatzieleftheriou\,  Institute for Theoretical Physics\, Goethe University Frankfurt\, Germany \nSummary:\nStrongly correlated electronic systems exhibit intriguing properties and highly complex phase diagrams\, including metal-to-insulator transitions\, magnetic/charge orderings and the field’s holy grail: high temperature superconductivity. Their theoretical description is very challenging and various many-body methods have been developed to this direction. I will present results using state-of-the-art numerical techniques that allow for an accurate description of both strong local electronic correlations and spatial fluctuations. I will discuss the application of this approach on the study of a simple model\, relevant for a series of materials\, where we have analyzed the interplay of Mott physics and magnetic fluctuations. We have identified the Slater and Heisenberg regimes in the phase diagram\, which are separated by a crossover region of competing spatial and local electronic correlations. This bridging of the two limits (the spin-fluctuation dominated Slater regime at weak coupling and the Mott insulator at strong-coupling) had been a key missing ingredient to our understanding of metal-insulator transitions in real materials. I will\, moreover\, present results of a recent work on the perovskite Sr2RuO4 compound\, where we have performed realistic calculations and have accurately reproduced the experimentally estimated magnetic susceptibility\, resolving a long-standing discrepancy\, in the community\, between theory and experiment.
URL:https://fermi.univ-tlse3.fr/event/magnetic-fluctuations-in-strongly-correlated-systems-from-toy-models-to-realistic-materials-simulations-maria-chatzieleftheriou-lcpq-seminaire-28-11-2024-14h00/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,LCPQ,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20241129T140000
DTEND;TZID=Europe/Paris:20241129T170000
DTSTAMP:20260514T220618
CREATED:20241123T084512Z
LAST-MODIFIED:20241126T082012Z
UID:11177-1732888800-1732899600@fermi.univ-tlse3.fr
SUMMARY:Study of carbonaceous nanograins-water interactions in the era of James Webb Space Telescope. - (Arya M Nair / Thesis / LCAR)\, 29/11/2024\, 14H
DESCRIPTION:PhD defense \nArya M Nair   FeRMI\, Salle de conférence 3R4 \nComposition du jury: \n\nJean Hugues Fillion (Sorbonne Université)\nJennifer Noble (Aix-Marseille Université)\nFranck Le Petit (Observatoire de Paris)\nAude Simon (Université Toulouse III)\nChristine Joblin (Université Toulouse III)\nSébastien Zamith (Université Toulouse III)\n\n  \nAbstract:\nThe aromatic infrared bands (AIBs) observed in the interstellar medium is attributed to the emission from a group of molecules called Polycyclic Aromatic Hydrocarbons (PAHs). In the dense clouds that are shielded from UV radiations\, interstellar dust is coated by ices in which water plays a key role. This PhD thesis in the field of laboratory astrophysics aims to study of interaction of water with these PAHs under controlled physical conditions. \nMore precisely\, positively charged mixed PAH (here pyrene)-water clusters are produced in a cryogenic gas aggregation source prior to thermalization at 25K. The mass selected cluster undergo collisions with inert gases and the products are analyzed using time-of-flight mass spectrometry. Experiments were also performed on deuterated system to understand H/D exchange mechanism. \nThe studies provide information regarding the dissociation energy and hence helps to characterize the structure of the cluster. The molecular data obatined could be used to model these interactions in star- and planet-forming regions.
URL:https://fermi.univ-tlse3.fr/event/study-of-carbonaceous-nanograins-water-interactions-in-the-era-of-james-webb-space-telescope-arya-m-nair-thesis-lcar-29-11-2024-14h/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,HDR / Thesis,LCAR
END:VEVENT
END:VCALENDAR