Laser desorption from a liquid stream

Authors

John Holdsworth Department of Physics, Ateneo de Manila University
James Springfield School of Science, Griffith University, Australia
Katie Queeney Chemistry Department, Harvard University, USA
Michel Versluis Lund Institute of Technology, Sweden
Alan Knight School of Science, Griffith University, Australia

Abstract

We have demonstrated the feasibility of laser desorption from a stream of liquid within a vacuum chamber as a source of analyte for spectral analysis. The parameters necessary for operation of the system have been identified and include hardware and properties of the liquid chosen as carrier. The system was demonstrated by the Nd:YAG laser desorption of naphthalene from 1,2-ethanediol and the subsequent entrainment of the desorbed material in a supersonic expansion. Using the frequency doubled output from a Nd:YAG pumped dye laser as a source and fluorescence detection, we acquired excitation spectra which show the final temperature of the desorbed material to be < 15K. These cold spectra demonstrate and confirm the applicability of the technique as a spectral source.

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Issue

1995: Proceedings of the 13th National Physics Congress of the Samahang Pisika ng Pilipinas

Article ID

SPP-1995-LP-01

Section

Laser Physics and Spectroscopy

Published

1995-10-21

How to Cite

[1]

J Holdsworth, J Springfield, K Queeney, M Versluis, and A Knight, Laser desorption from a liquid stream, Proceedings of the Samahang Pisika ng Pilipinas 13, SPP-1995-LP-01 (1995). URL: https://proceedings.spp-online.org/article/view/SPP-1995-LP-01.