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Proceedings Paper

Laser photodissociation in a linear ion trap
Author(s): M. N. Makhmudov; V. A. Stepanov; M. Yu. Sudakov; A. B. Yastrebkov
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Paper Abstract

The perspectives of using laser multiphoton dissociation processes for analysis of the polyatomic molecules are considered. It is shown that mass analysis of both the initial molecules and the fragments of dissociation is preferably to be carried out by means of linear ion trap acting in MS regime. New schemes of laser photodissociative spectrometer based on the mode locked NH3-CO2 laser and linear ion trap are proposed for realization of MS regime. Principle parameters of this laser (wavelength region from 9 to 13.5 μm, pulse energy approximately 1 J, pulse duration from 10 ns to 2 μs and pulse repetition from 1 Hz to 1 kHz) allow investigating the large number of the polyatomic molecules. Using of a linear ion trap reduces influencing of a space charge and increases an interaction range of laser radiation with ions as contrasted to three-dimensional trap. Using of non-linear effects of motion of entrapped ions in the linear ion trap will give possibility to interact by laser radiation with ions on an axis Z inside the quadrupole capacitor. This fact essentially increases sensitivity of the analysis. Resonant interaction of laser and radio-frequency fields with ions increases resolution of such method of the analysis too.

Paper Details

Date Published: 19 June 2003
PDF: 7 pages
Proc. SPIE 5066, Lasers for Measurements and Information Transfer 2002, (19 June 2003); doi: 10.1117/12.501395
Show Author Affiliations
M. N. Makhmudov, Ryazan State Pedagogical Univ. (Russia)
V. A. Stepanov, Ryazan State Pedagogical Univ. (Russia)
M. Yu. Sudakov, Shimadzu Research Lab. (United Kingdom)
A. B. Yastrebkov, Ryazan State Pedagogical Univ. (Russia)

Published in SPIE Proceedings Vol. 5066:
Lasers for Measurements and Information Transfer 2002
Vadim E. Privalov, Editor(s)

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