- Conference date: 8-12 October 2000
- Location: Knoxville, Tennessee (USA)
The coupling of a tunable laser with a laser microprobe FT-ICR-MS prototype developed at the University of Metz made it possible to carry out the first RLA-FTICRMS experiment, which combines the selectivity and the sensitivity of two photon resonant laser ablation/ionization and the high accuracy mass measurement. This technique is a tool for the direct analysis of organic (or inorganic) traces on surfaces. The selectivity of the element’s detection depends on the choice of resonant line, and on the screen effect of gazeous plume emitted by the laser pulse. In fact, the resonant two photons processes are most effective when the laser power density is lower than because the gaseous cloud is relatively transparent in this condition.
- Laser ablation
- Multiphoton processes
- Surface ionization
- Mass measurement
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