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Development of a laser microprobe fourier transform mass spectrometer with external ion source

Development of a laser microprobe fourier transform mass spectrometer with external ion source Laser microprobe mass spectrometry (LMMS) employs focused laser‐beam irradiation of solids and subsequent mass analysis of the ions produced. The technique is suitable for the local analysis of inorganic and organic constituents with a spatial resolution in the micrometer range. The Fourier transform mass spectrometer (FTMS) is an analyser of choice for LMMS because high mass resolution and accurate mass determination can be routinely achieved at adequate sensitivity. This paper describes the first LMMS instrument using FTMS with an external ion source. The design considerations and the experimental performance are described with respect to such analytical parameters as spatial resolution and sensitivity. A comparison between time‐of‐flight mass spectrometry and IT‐LMMS for diagnostic analysis of organic molecules is interpreted in terms of the ion formation processes. Finally, the analysis of a selected integrated circuit evidences the feasibility of local analysis with a spatial resolution of 5 μm. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Rapid Communications in Mass Spectrometry Wiley

Development of a laser microprobe fourier transform mass spectrometer with external ion source

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References (22)

Publisher
Wiley
Copyright
Copyright © 1993 Wiley Subscription Services
ISSN
0951-4198
eISSN
1097-0231
DOI
10.1002/rcm.1290070504
Publisher site
See Article on Publisher Site

Abstract

Laser microprobe mass spectrometry (LMMS) employs focused laser‐beam irradiation of solids and subsequent mass analysis of the ions produced. The technique is suitable for the local analysis of inorganic and organic constituents with a spatial resolution in the micrometer range. The Fourier transform mass spectrometer (FTMS) is an analyser of choice for LMMS because high mass resolution and accurate mass determination can be routinely achieved at adequate sensitivity. This paper describes the first LMMS instrument using FTMS with an external ion source. The design considerations and the experimental performance are described with respect to such analytical parameters as spatial resolution and sensitivity. A comparison between time‐of‐flight mass spectrometry and IT‐LMMS for diagnostic analysis of organic molecules is interpreted in terms of the ion formation processes. Finally, the analysis of a selected integrated circuit evidences the feasibility of local analysis with a spatial resolution of 5 μm.

Journal

Rapid Communications in Mass SpectrometryWiley

Published: Jan 1, 1993

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