✦ LIBER ✦

An Approach to the Design of Mass-correlated Delayed Extraction in a Linear Time-of-flight Mass Spectrometer

✍ Scribed by S. V. Kovtoun

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 111 KB
Volume: 11
Category: Article
ISSN: 0951-4198
DOI: 10.1002/(sici)1097-0231(199703)11:5<433::aid-rcm872>3.0.co;2-l

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✦ Synopsis

An algorithm is suggested that allows the implementation of first order velocity (energy) focusing in a linear, single field, time-of-flight mass spectrometer (TOF/MS) over a broad mass range using a time-dependent mass-corrected extraction field. The interpolation formula for extraction field dependence on time for a particular geometry of TOF/MS is presented. There are two values that determine the expression for temporal dependence of the extraction field: the geometry scale parameter (the ratio of the ion source and field-free drift tube lengths) and the initial point (low-mass limit) of scanning in the mass spectrum.

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