Multiphoton Ionization of Laser-Desorbed Neutral Molecules in a Fourier Transform Ion Cyclotron Resonance Mass Spectrometer
Abstract
Resonant multiphoton ionization of laser desorbed non-volatile samples has been achieved in a Fourier transform ion cyclotron resonance mass spectrometer (FTICR). The detection of iron at the 100 parts-per-million doping level in an indium phosphide compound semiconductor sample and the production of molecular ions for a hexapeptide have been observed in a modified FTICR analyzer cell. A unique three laser experiment has been devised in which infrared muliphoton dissociation of laser desorbed dipeptide ions, formed by resonant multiphoton ionization of laser desorbed neutrals, is performed. Multiphoton ionization (MPI), Laser desorption, Semiconductor materials, Trace analysis, Peptide sequencing, Fourier transform ion cyclotron resonance mass spectrometry.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 19, 1990
- Accession Number
- ADA221835
Entities
People
- Clifford H. Watson
- Jeffrey A. Zimmerman
- John R. Eyler
Organizations
- University of Florida