S
Sydney Leach
Researcher at Centre national de la recherche scientifique
Publications - 132
Citations - 3933
Sydney Leach is an academic researcher from Centre national de la recherche scientifique. The author has contributed to research in topics: Excited state & Absorption spectroscopy. The author has an hindex of 32, co-authored 132 publications receiving 3808 citations. Previous affiliations of Sydney Leach include Cergy-Pontoise University & Janssen Pharmaceutica.
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Journal ArticleDOI
A threshold-photoelectron fluorescence–photon coincidence study of radiationless transitions in the B2Π state of BrCN+
TL;DR: In this paper, the T-PEFCO technique was used to count the coincidences between threshold photoelectrons and the fluorescence photons emitted by photoions produced by synchrotron radiation excitation in the 13.5-15 eV excitation energy range.
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VUV spectroscopy and photochemistry of five interstellar and putative prebiotic molecules
Martin Schwell,François Gaie-Levrel,Yves Bénilan,Marie-Claire Gazeau,Nicolas Fray,G. Saul,Norbert Champion,Sydney Leach,Jean-Claude Guillemin +8 more
TL;DR: In this paper, the authors investigated the photochemistry of molecules of astrophysical interest in the interstellar medium (ISM) and in planetary atmospheres, including methylformate (MF), glycolaldehyde (GA), dimethylether (DIM), aminoacetonitrile (AAC), and cyanoacetylene (CA).
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Laser pyrolysis: Effect of ambient gases on molecular spectral emission
A. Frad,Sydney Leach +1 more
TL;DR: In this article, the emission spectra of molecules in luminous plumes produced by focussing a Q-switched ruby laser beam on various solids (mostly elements) in the following gases at various pressures; air, H 2, N 2, SF 6 and O 2
Journal ArticleDOI
VUV Dissociative Photoionization of Quinoline in the 7–26 eV Photon Energy Range
Sydney Leach,Sydney Leach,Hans-Werner Jochims,Helmut Baumgärtel,Norbert Champion,Norbert Champion +5 more
TL;DR: In this paper, the dissociative photoionization of quinoline was studied by photoionisation mass spectrometry and ion yield measurements over a synchrotron photon excitation energy range 7-26 eV.
Proceedings ArticleDOI
VUV-UV absorption spectroscopy of DNA and UV screens suggests strategies for UV resistance during evolution and space travel
TL;DR: In this article, the authors used synchrotron light to measure VUV-UV absorption spectra (125-340 nm) for DNA and its components, including polygonal nucleotides and mononucleotides.