Surface pump-probe femtosecond-laser mass spectrometry: Time-, mass-, and velocity-resolved detection of surface reaction dynamics

Vaida, Mihai E; Bernhardt, Thorsten M

doi:10.1063/1.3488098

Title: Surface pump-probe femtosecond-laser mass spectrometry: Time-, mass-, and velocity-resolved detection of surface reaction dynamics

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Abstract

A detailed account of the experimental methodology of surface pump-probe femtosecond-laser mass spectrometry is presented. This recently introduced technique enables the direct time-resolved investigation of surface reaction dynamics by monitoring the mass and the relative velocity of intermediates and products of a photoinduced surface reaction via multiphoton ionization. As a model system, the photodissociation dynamics of methyl iodide adsorbed at submonolayer coverage on magnesia ultrathin films is investigated. The magnesia surface preparation and characterization as well as the pulsed deposition of methyl iodide are described. The femtosecond-laser excitation (pump) and, in particular, the resonant multiphoton ionization surface detection (probe) schemas are discussed in detail. Results of pump-probe time-resolved methyl and iodine atom detection experiments are presented and the potential of this method for velocity-resolved photofragment analysis is evaluated.

Authors:

Vaida, Mihai E; Bernhardt, Thorsten M ^[1]

Institute of Surface Chemistry and Catalysis, University of Ulm, Albert-Einstein-Allee 47, 89069 Ulm (Germany)

Publication Date:: Fri Oct 15 00:00:00 EDT 2010

OSTI Identifier:: 22055743

Resource Type:: Journal Article

Journal Name:: Review of Scientific Instruments

Additional Journal Information:: Journal Volume: 81; Journal Issue: 10; Other Information: (c) 2010 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0034-6748

Country of Publication:: United States

Language:: English

Subject:: 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; DETECTION; DISSOCIATION; ENERGY RESOLUTION; EXCITATION; IODINE; MAGNESIUM OXIDES; MASS RESOLUTION; MASS SPECTROSCOPY; METHYL IODIDE; PHOTOIONIZATION; PHOTOLYSIS; PROBES; SURFACE COATING; SURFACE PROPERTIES; SURFACES; THIN FILMS; TIME RESOLUTION

Citation Formats


                    Vaida, Mihai E, and Bernhardt, Thorsten M. Surface pump-probe femtosecond-laser mass spectrometry: Time-, mass-, and velocity-resolved detection of surface reaction dynamics.  United States: N. p., 2010. 
        Web.  doi:10.1063/1.3488098.

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                    Vaida, Mihai E, & Bernhardt, Thorsten M. Surface pump-probe femtosecond-laser mass spectrometry: Time-, mass-, and velocity-resolved detection of surface reaction dynamics.  United States.  https://doi.org/10.1063/1.3488098

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                    Vaida, Mihai E, and Bernhardt, Thorsten M. 2010.  
        "Surface pump-probe femtosecond-laser mass spectrometry: Time-, mass-, and velocity-resolved detection of surface reaction dynamics".  United States.  https://doi.org/10.1063/1.3488098.

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@article{osti_22055743,

  title        = {Surface pump-probe femtosecond-laser mass spectrometry: Time-, mass-, and velocity-resolved detection of surface reaction dynamics},

  author       = {Vaida, Mihai E and Bernhardt, Thorsten M},

  abstractNote = {A detailed account of the experimental methodology of surface pump-probe femtosecond-laser mass spectrometry is presented. This recently introduced technique enables the direct time-resolved investigation of surface reaction dynamics by monitoring the mass and the relative velocity of intermediates and products of a photoinduced surface reaction via multiphoton ionization. As a model system, the photodissociation dynamics of methyl iodide adsorbed at submonolayer coverage on magnesia ultrathin films is investigated. The magnesia surface preparation and characterization as well as the pulsed deposition of methyl iodide are described. The femtosecond-laser excitation (pump) and, in particular, the resonant multiphoton ionization surface detection (probe) schemas are discussed in detail. Results of pump-probe time-resolved methyl and iodine atom detection experiments are presented and the potential of this method for velocity-resolved photofragment analysis is evaluated.},

  doi          = {10.1063/1.3488098},

  url          = {https://www.osti.gov/biblio/22055743},
  journal      = {Review of Scientific Instruments},

  issn         = {0034-6748},

  number       = 10,

  volume       = 81,

  place        = {United States},

  year         = {Fri Oct 15 00:00:00 EDT 2010},

  month        = {Fri Oct 15 00:00:00 EDT 2010}

}

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