Resonant laser ablation - thin film and multilayer analysis
- Univ. of California, Davis, CA (United States)
- Los Alamos National Lab., NM (United States); and others
While most laser ablation mass spectrometry has been performed with fixed frequency lasers operated at high fluxes, there has been recent interest in the use of tunable lasers to enhance the ionization yield of selected components in an analytical sample. Resonant laser ablation (RLA) uses a single tuned to a one- or two-photon resonant transition in the analyte of interest, and performs simultaneous ablation and ionization with modest intensity laser pulses for monitoring specific elements of interest. Recently, Ledingham`s group and this group have begun systematic study of the RLA process on a variety of materials. Advantages of RLA, in addition to the use of a single laser, include: (1) simplification of mass spectra by enhancement of the signal of the analyte of interest, (2) improvement in the absolute detection limits resulting from the enhanced ionization efficiency over non-resonant ionization and (3) improvement in the relative sensitivity as a result of the decrease in the ion signal obtained from other components with the sample.
- OSTI ID:
- 210663
- Report Number(s):
- CONF-9505261--
- Country of Publication:
- United States
- Language:
- English
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