Investigation of ghost peaks caused by nonlinear fields in the ion-trap mass-spectrometer

Mo, Wenjun, Langford, Marian L., Todd, John F.J. (1995) Investigation of ghost peaks caused by nonlinear fields in the ion-trap mass-spectrometer. Rapid Communications in Mass Spectrometry, 9 (2). pp. 107-113. ISSN 0951-4198. (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:19395)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided.

Abstract

Mass spectral 'ghost peaks' are generated with the ion trap by the superposition of higher order multipole fields which originate through deviations from the pure quadrupole field. In data acquisition, when the amplitude of the RF voltage is tamping though a non-linear resonance point (q*) on the Mathieu stability diagram, some ions (m(o)) are ejected by the non-linear field rather than by the quadrupole field at q(z) = 0.908 on the beta(z) = 1 boundary. The prematurely ejected ions will be seen as a peak at m(1) = (q*/0.908)m(o), which we have termed a 'ghost peak'.

Item Type:	Article
Subjects:	Q Science > QD Chemistry
Institutional Unit:	Schools > School of Engineering, Mathematics and Physics > Physics and Astronomy
Former Institutional Unit:	Divisions > Division of Natural Sciences > Physics and Astronomy
Depositing User:	O.O. Odanye
Date Deposited:	03 Jun 2009 10:38 UTC
Last Modified:	20 May 2025 09:33 UTC
Resource URI:	https://kar.kent.ac.uk/id/eprint/19395 (The current URI for this page, for reference purposes)

University of Kent Author Information

Todd, John F.J..

Creator's ORCID:	https://orcid.org/0000-0002-9680-1851
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