Wavelength Dependence of the Multiphoton Ionization and Fragmentation Dynamics of Cr(CO)6/Methanol van der Waals Heteroclusters

Abstract

Mixed van der Waals clusters of Cr(CO)6 and methanol, generated in a pulsed free-jet expansion of seeded helium, are irradiated by strongly focused UV laser pulses, corresponding to intensities on the order of 10 12 to 10 13 W/ cm2. Photoions created via multiphoton dissociation (MPD) and ionization (MPI) of these neutral clusters are analyzed by time-of-flight mass spectrometry. We find that the multiphoton dissociation and ionization dynamics of Cr(CO)6 within van der Waals clusters are quite unusual in comparison to those of the naked molecule, since the observed photoion yields are highly wavelength dependent, and since complete ligand stripping does not appear to dominate the photophysics in the neutral ladder.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1990
Accession Number
ADA224691

Entities

People

  • James F. Garvey
  • William R. Peifer

Organizations

  • University at Buffalo

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Carbonyl Complexes
  • Chemistry
  • Detectors
  • Dissociation
  • Dye Lasers
  • Energy Transfer
  • Ionization
  • Liquid Dye Lasers
  • Mass Spectra
  • Mass Spectrometers
  • Mass Spectrometry
  • Military Research
  • Physical Chemistry
  • Spectra
  • Spectrometry
  • Spectroscopy
  • Transition Metals

Fields of Study

  • Physics

Readers

  • Combustion Dynamics and Shock Wave Physics.
  • Electrochemical Engineering/ Fuel Cell Technologies
  • Molecular Photonics/Laser Physics

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers