✦ LIBER ✦

Determination of Ion Magnetron Radial Distribution in Fourier Transform Ion Cyclotron Resonance Mass Spectrometry

✍ Scribed by Shenheng Guan; Yulin Huang; Tianpei Xin; Alan G. Marshall

Publisher: John Wiley and Sons
Year: 1996
Tongue: English
Weight: 566 KB
Volume: 10
Category: Article
ISSN: 0951-4198
DOI: 10.1002/(sici)1097-0231(199611)10:14<1855::aid-rcm764>3.0.co;2-b

No coin nor oath required. For personal study only.

✦ Synopsis

The spatial distribution of the ion cyclotron orbit 'guiding centers' (magnetron radii) in a Penning trap determines virtually all aspects of Fourier transform ion cyclotron resonance (FIICR) mass spectrometry performance. Here, we demonstrate experimentally a simple method for determining that distribution, based on measuring FMCR mass spectral peak height following dipolar excitatioddipolar detection at various stages of magnetron radial expansion. No instrumental modificaitions are needed. Such data will make it possible to evaluate theoretical models of space charge and to quantitate and optimize ion formation, ion injection, ion trapping, ion transfer, photodissodation and ultrahigh-nmlution JTICR experiments.

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