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Laboratoire Interactions, Dynamiques et Lasers (LIDYL) - CEA-CNRS et Université Paris Saclay
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Les activités du Laboratoire Interactions, Dynamiques et Lasers (CEA-CNRS, dans le cadre de l'Université Paris Saclay) sont centrées sur l'interaction rayonnement-matière et concernent des aspects aussi bien physiques que chimiques.

Les programmes de recherche s'étendent des systèmes atomiques et moléculaires simples aux systèmes moléculaires et biomoléculaires complexes jusqu'aux plasmas.

 
#2300 - Last update : 10/03 2022
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2) Macroscopic response : 2)    Macroscopic response  a)    Model description: We solve the wave equation in 2D cylindrical or 3D Cartesian geometry, depending on the problem under consideration, using either a finite difference or a pseudo-spectral method. Different approximations can be made, from the paraxial and slowly varying envelope approximations to the solution of the full wave equation.
ATTOLabThe Platform (Equipments)La Plateforme (Equipements) : The équipments are loacated at the CEA-l’Orme-les-merisiers: two lights sources and associated endstations are dedicated to ultrafast studies in the gas phase and the solid state. They are operated by the ATTOLab partners under coordination of the Laboratory Interactions, Dynamics and Lasers (LIDyL) of CEA-CNRS
Attosecond photoionization spectroscopy : Resolving in time the ultrafast buildup of an autoionizing resonance Spectroscopy has taught us how the very precise measurement of resonance lineshapes gives insight into the structure of matter. However, as a time-integrated measurement, the spectral lines give only indirect information on the underlying electronic dynamics.
Coulomb explosion imaging : << Back When several electrons are ejected from a molecule by a femtosecond laser pulse in the 10141015 Wcm-2 intensity range, the Coulomb repulsion between the resulting multicharged atoms leads to fragmentation called Coulomb explosion. The atomic fragments trajectories are determined by their initial positions within the molecule: In principle the molecular geometry may be inferred from these trajectories.
Hommage à Bertrand Carré : Hommage à Bertrand Carré C’est avec une grande émotion que nous apprenons la disparition de notre collègue et ami Bertrand Carré. Il s’est battu avec un courage impressionnant contre la grave maladie diagnostiquée en juillet 2016.
Ionisation Multiple et Imagerie Moléculaire : L'objectif de ces thématiques est comprendre et contrôler la dynamique de rediffusion en champ laser intense d'un électron avec le cœur ionique, qui conduit à plusieurs processus importants, tels que la diffusion élastique ion-électron, l’ionisation multiple.      
LIDYL n'est pas LIDL ! ! : http://iramis.cea.
Microscopic response : a)    Model description and method: We solve the time-dependent Schrödinger equation (TDSE), in the single active electron approximation, on a 1D or 2D Cartesian grid or in 3D spherical geometry. The electron wavepacket (EWP) dynamics is governed here by the static atomic potential and the strong time-dependent laser electric field.
publications on energetic particles :     Balcerzyk A, Baldacchino G. Implementation of laser induced fluorescence in a pulse radiolysis experiment - a new way to analyze resazurin-like reduction mechanisms Analyst. 2014;139:1707-12. Balcerzyk A, Boughattas I, Pin S, Balanzat E, Baldacchino G. First observation of HO reactivity in water under high energy ions at elevated temperature PCCP. 2014;16:23975-84. Baldacchino G. Water radiolysis with heavy-ion beams at GANIL.
Sofockle laser system and post-compression setup : << Back The Attophysics group operates the Sofockle laser system which delivers pulses of wavelength 0.8 µm, duration 40 fs, energy 700 µJ with a repetition rate 3 kHz. A post-compression optical bench was implemented in order to reach pulse durations of 10 fs with energy 200 µJ.  In addition to experiments of the Attophysics group, the laser system is used by other groups from LIDYL and from Université Paris-Saclay.

 

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