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Proceedings Paper

Multidimensional molecular identification by laser control mass spectrometry
Author(s): Marcos Dantus; Vadim V. Lozovoy; Xin Zhu; Tissa Gunaratne
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Paper Abstract

Controlled molecular photofragmentation and ionization achieved with shaped femtosecond laser pulses is coupled with mass spectrometry to achieve a powerful multidimensional tool for fast, accurate, reproducible and quantitative molecular identification. Specific pulse shaping functions are introduced to enhance structure-dependent differences in fragmentation fingerprints. Identification of geometric and structural isomer mixtures is demonstrated. Receiver operational (ROC) curves from our experimental data demonstrate the enhanced reliability that can be achieved by femtosecond laser control mass spectrometry. The potential use of this method for identification of chemicals and explosives with no false alarms is discussed.

Paper Details

Date Published: 16 April 2008
PDF: 6 pages
Proc. SPIE 6954, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing IX, 69540D (16 April 2008); doi: 10.1117/12.777384
Show Author Affiliations
Marcos Dantus, Michigan State Univ. (United States)
Vadim V. Lozovoy, Michigan State Univ. (United States)
Xin Zhu, Michigan State Univ. (United States)
Tissa Gunaratne, Michigan State Univ. (United States)

Published in SPIE Proceedings Vol. 6954:
Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing IX
Augustus Way Fountain III; Patrick J. Gardner, Editor(s)

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