منابع مشابه
The Velocity Distribution of Hydrogen Molecules Desorbed from Metal Surfaces
An essential step in many chemical reactions occurring at gas-solid interfaces is the associative desorption reaction, A(ad) + B(ad) AB(g), where two atoms adsorbed on the surface combine to form a molecule that desorbs to the gas phase. This reaction has been studied in several laboratories1 by a variety of techniques because of its importance to heterogeneous catalysis, high-temperature oxida...
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für Naturforschung in cooperation with the Max Planck Society for the Advancement of Science under a Creative Commons Attribution 4.0 International License. Dieses Werk wurde im Jahr 2013 vom Verlag Zeitschrift für Naturforschung in Zusammenarbeit mit der Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. digitalisiert und unter folgender Lizenz veröffentlicht: Creative Commons Namen...
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We study the angular correlations of various galaxy catalogs (CfA1, SSRS1, Perseus-Pisces, APM Bright Galaxies and Zwicky). We find that the angular correlation exponent is γ a = 0.1 ± 0.1 rather than γ a = 0.7 as usually found by the standard correlation function ω(θ). We identify the problem in the artificial decay of ω(θ). Moreover we find that no characteristic angular scale is present in a...
متن کاملEvidence for thermalization of surface-desorbed molecules at heating rates of 108 K/s
Laser desorption of aniline-d7 from a single-crystal surface 0001 of sapphire Al2O3 at a heating rate on the order of 108 K/s was studied using pulsed infrared laser radiation for desorption and resonance enhanced multiphoton ionization REMPI for detection of the desorbed aniline molecules. On the basis of single-vibronic-level fluorescence SVLF spectra we unambigiously assign the 10b transitio...
متن کاملMolecular frame photoelectron angular distribution for oxygen 1s photoemission from CO2 molecules
We have measured photoelectron angular distributions in the molecular frame (MF-PADs) for O 1s photoemission from CO2, using photoelectron-O+–CO+ coincidence momentum imaging. Results for the molecular axis at 0, 45 and 90◦ to the electric vector of the light are reported. The major features of the MF-PADs are fairly well reproduced by calculations employing a relaxed-core Hartree–Fock approach...
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ژورنال
عنوان ژورنال: Le Journal de Physique IV
سال: 1991
ISSN: 1155-4339
DOI: 10.1051/jp4:1991203