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Surface Analysis by Laser Desorption of Neutral Molecules with Fourier Transform Mass Spectrometry Detection

  • R. T. McIverJr.
  • M. G. Sherman
  • D. P. Land
  • J. R. Kingsley
  • J. C. Hemminger
Conference paper
Part of the Springer Series in Chemical Physics book series (CHEMICAL, volume 44)

Abstract

We have developed a new instrument that utilizes a pulsed laser to desorb neutral molecules from a surface and a Fourier transform mass spectrometer (FTMS) to detect ions that are produced by electron impact or laser ionization of the desorbed species [1,21. The Fourier transform detection method can acquire a complete mass spectrum after each laser pulse, and the mass resolution is 10 to 100 times greater than can be achieved with time-of-flight (TOF) detection. With FTMS the signal due to laser-desorbed ethylene (m/z 28.031) can be mass-resolved from that due to background nitrogen (m/z 28.006) or possible silicon (m/z 27.976) impurities in the crystal.

Keywords

Laser Pulse Laser Desorption Neutral Molecule Multiphoton Ionization Methyl Benzoate 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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Copyright information

© Springer-Verlag Berlin Heidelberg 1986

Authors and Affiliations

  • R. T. McIverJr.
    • 1
  • M. G. Sherman
    • 1
  • D. P. Land
    • 1
  • J. R. Kingsley
    • 1
  • J. C. Hemminger
    • 1
  1. 1.Department of ChemistryUniversity of CaliforniaIrvineUSA

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