Ultrafast laser time-of-flight mass analysis of laser-desorbed atoms and molecules

Hankin, S.M. et al. (2001) Ultrafast laser time-of-flight mass analysis of laser-desorbed atoms and molecules. In: 10th International symposium - Resonance ionization spectroscopy and its applications, Knoxville, TN, October 2000, 14 -19. ISBN 0735400245 (doi: 10.1063/1.1405577)

Abstract

Femtosecond time-of-fight mass spectra of laser-desorbed gallium arsenide (GaAs) and trinitrobenzene (TNB) reveal the characteristic features and differences of femtosecond atomic and molecular ionisation. Significant yields of multiply-charged atomic fragments, parent molecular ions and structure-specific fragment ions of labile molecules have been obtained. An optimum desorption laser intensity for the transfer of neutral intact parent molecules in to the gas phase has been observed to be molecule-dependent. This work demonstrates the potential of ultrafast laser ionisation and has significant implications for analytical and environmental studies of solid materials.

• Item Type: Conference Proceedings
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Singhal, Dr Ravi and Ledingham, Professor Kenneth
• Authors: Hankin, S.M., Robson, L., Tasker, A.D., Ledingham, K.W.D., McCanny, T., Singhal, R.P., Kosmidis, C., Tzallas, P., Langley, A.J., Taday, P.F., and Divall, E.J.
• Subjects: Q Science > QC Physics
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Journal Name: AIP Conference Proceedings
• ISSN: 0094-243X
• ISBN: 0735400245