Výsledky vyhledávání - "Franck Lépine"

Akademický článek

GlAIcomics: a deep neural network classifier for spectroscopy-augmented mass spectrometric glycans data

Autor: Thomas Barillot, Baptiste Schindler, Baptiste Moge, Elisa Fadda, Franck Lépine, Isabelle Compagnon

Publikováno v: Beilstein Journal of Organic Chemistry, Vol 19, Iss 1, Pp 1825-1831 (2023)

Carbohydrate sequencing is a formidable task identified as a strategic goal in modern biochemistry. It relies on identifying a large number of isomers and their connectivity with high accuracy. Recently, gas phase vibrational laser spectroscopy combi

Externí odkaz: https://doaj.org/article/ac9d215d9e7049ad979941334ae1f05d

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Akademický článek

On-the-fly investigation of XUV excited large molecular ions using a high harmonic generation light source

Autor: Marius Hervé, Alexie Boyer, Richard Brédy, Abdul-Rahman Allouche, Isabelle Compagnon, Franck Lépine

Publikováno v: Scientific Reports, Vol 12, Iss 1, Pp 1-10 (2022)

Abstract We present experiments where extreme ultraviolet femtosecond light pulses are used to photoexcite large molecular ions at high internal energy. This is done by combining an electrospray ionization source and a mass spectrometer with a pulsed

Externí odkaz: https://doaj.org/article/1c4691292d724f07a9e712c7fb036ecc

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Akademický článek

Ultrafast dynamics in molecular ions following UV and XUV excitation: a perspective

Autor: Marius Hervé, Alexie Boyer, Richard Brédy, Isabelle Compagnon, Franck Lépine

Publikováno v: Advances in Physics: X, Vol 7, Iss 1 (2022)

Gas phase experiments combined with ultrafast technologies can provide information on the intrinsic properties of molecular systems at picosecond, femtosecond, or even attosecond timescales. However, these experiments are often limited to relatively

Externí odkaz: https://doaj.org/article/6c75ededd0834fa1a1053f5216e63b4d

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Akademický článek

Controlled ultrafast ππ*-πσ* dynamics in tryptophan-based peptides with tailored micro-environment

Autor: Marius Hervé, Alexie Boyer, Richard Brédy, Isabelle Compagnon, Abdul-Rahman Allouche, Franck Lépine

Publikováno v: Communications Chemistry, Vol 4, Iss 1, Pp 1-7 (2021)

Pump-probe experiments in the gas phase usually target neutral molecules. Here the authors couple an electron spray source with ultrafast pump-probe UV-Vis spectroscopy, to follow the ππ*-πσ* coupling in tryptophan-based ions.

Externí odkaz: https://doaj.org/article/35321d0ddb244e059dd2d7333b99480b

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Air-photonics based terahertz source and detection system

Autor: Emilien Prost, Vincent Loriot, Eric Constant, Isabelle Compagnon, Luc Bergé, Franck Lépine, Stefan Skupin

Publikováno v: The European Physical Journal. Special Topics
The European Physical Journal. Special Topics, 2022, ⟨10.1140/epjs/s11734-022-00748-7⟩

International audience; Two-color air plasma based broadband terahertz (THz) generation and subsequent air biased coherent detection (ABCD) of the THz field are presented. Both source and detection system are characterized experimentally and numerica

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::16ef759bd7388d1dca46dd67990447f2
https://hal.science/hal-03920159/document

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Few-Femtosecond Isotope Effect in Polyatomic Molecules Ionized by Extreme Ultraviolet Attosecond Pulse Trains

Autor: Morgane Vacher, Alexie Boyer, Vincent Loriot, Franck Lépine, Saikat Nandi

Publikováno v: The journal of physical chemistry. A. 126(34)

Following ionization by an extreme ultraviolet (XUV) attosecond pulse train, a polyatomic molecule can be promoted to more-than-one excited states of the residual ion. The ensuing relaxation dynamics is often facilitated by several reaction coordinat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::102ead3476ae94f632c411bd9c41e191
https://pubmed.ncbi.nlm.nih.gov/35994358

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Glory oscillations in photoionization microscopy: Connection with electron dynamics and Stark spectral structures in the continuum

Autor: K. Ferentinou, Franck Lépine, Samuel Cohen, S. Danakas, P. Kalaitzis, Christian Bordas

Publikováno v: Physical Review A
Physical Review A, American Physical Society 2020, 102 (3), pp.033101. ⟨10.1103/PhysRevA.102.033101⟩
Physical Review A. Covering atomic, molecular, and optical physics and quantum information, 102, 3, pp. 1-14
Physical Review A. Covering atomic, molecular, and optical physics and quantum information, 102, 1-14

International audience; In classical scattering theory, the term “glory scattering” implies the divergence of the classical differential cross section that occurs as soon as the deflection function goes through zero for a nonzero value of the imp

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cf004193331d4d6340799464065a03e3
https://hdl.handle.net/2066/224923

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Anisotropic dynamics of two-photon ionization: An attosecond movie of photoemission

Autor: Alice Autuori, Dominique Platzer, Mariusz Lejman, Guillaume Gallician, Lucie Maëder, Antoine Covolo, Lea Bosse, Malay Dalui, David Bresteau, Jean-François Hergott, Olivier Tcherbakoff, Hugo J. B. Marroux, Vincent Loriot, Franck Lépine, Lionel Poisson, Richard Taïeb, Jérémie Caillat, Pascal Salières

Publikováno v: Science Advances
Science Advances, 2022, 8 (12), pp.eabl7594. ⟨10.1126/sciadv.abl7594⟩

Imaging in real time the complete dynamics of a process as fundamental as photoemission has long been out of reach due to the difficulty of combining attosecond temporal resolution with fine spectral and angular resolutions. Here, we achieve full dec

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f1cd7e5038266d61eac7742884221cc0
https://hal.science/hal-03629043/file/sciadv.abl7594.pdf

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Ultrafast XUV Technology Combined with Electrospray Ionization Source for Investigating Large Molecular Ions

Autor: Alexie Boyer, Marius Hervé, Richard Brédy, Isabelle Compagnon, Franck Lépine

Publikováno v: The International Conference on Ultrafast Phenomena (UP) 2022.

We present a new experimental set-up combining ultrafast XUV technics with electrospray sources. First results of ultrafast dynamics in large molecular ions are shown demonstrating perspectives for applications in attochemistry.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::faad3a4e76976053dfdf0bbcb9003da4
https://doi.org/10.1364/up.2022.th4a.24

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Controlled ultrafast ππ*-πσ* dynamics in tryptophan-based peptides with tailored micro-environment

Autor: Alexie Boyer, M. Hervé, Abdul-Rahman Allouche, Franck Lépine, Isabelle Compagnon, Richard Brédy

Publikováno v: Communications Chemistry
Communications Chemistry, Nature Research 2021, 4 (1), ⟨10.1038/s42004-021-00557-4⟩
Communications Chemistry, Vol 4, Iss 1, Pp 1-7 (2021)

Ultrafast charge, energy and structural dynamics in molecules are driven by the topology of the multidimensional potential energy surfaces that determines the coordinated electronic and nuclear motion. These processes are also strongly influenced by

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f823ec2f34e74c3ba8f02639b2024fca
https://hal.archives-ouvertes.fr/hal-03342205/document

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