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A Study of the Quadrupole Ion Storage Source

Bonner, R.F. (1974) A Study of the Quadrupole Ion Storage Source. Doctor of Philosophy (PhD) thesis, University of Kent. (doi:10.22024/UniKent/01.02.94221) (KAR id:94221)

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Although the three-dimensional quadrupole ion trap has received some attention as a mass spectrometer, few reports have been published describing the more general exploitation of its ion storage capabilities« This latter aspect is the subject of the present research. Initially the general features of trapped ion techniques are surveyed in a review of the literature, after which the theory of the quadrupole ion storage trap (QUISTOR) is developed in general terms and a method for calculating the mean kinetic energy of stored ions derived. The design of the QUISTOR is briefly described and the method of mounting this device as an ion source for a commercial quadrupole mass filter given in detail« Various modifications made to the remainder of other existing equipment are also described« Following this the performance is presented in two parts« Firstly, an account of the modes of operation and the details of a characterization of the electron optics and the storage capabilities is given, and secondly, the various types of ionic process that have been observed in the QUISTOR, including low-pressure Chemical Ionization employing air as a reagent gas, are detailed« It is shown that the QUISTOR is an extremely versatile device, being capable of operation in a manner akin to a normal ion source or as an ion storage source, Finally, some suggestions for instrumental improvements and further research are included in a general discussion of the device.

Item Type: Thesis (Doctor of Philosophy (PhD))
Thesis advisor: Todd, J.F.J.
DOI/Identification number: 10.22024/UniKent/01.02.94221
Additional information: This thesis has been digitised by EThOS, the British Library digitisation service, for purposes of preservation and dissemination. It was uploaded to KAR on 25 April 2022 in order to hold its content and record within University of Kent systems. It is available Open Access using a Creative Commons Attribution, Non-commercial, No Derivatives ( licence so that the thesis and its author, can benefit from opportunities for increased readership and citation. This was done in line with University of Kent policies ( If you feel that your rights are compromised by open access to this thesis, or if you would like more information about its availability, please contact us at and we will seriously consider your claim under the terms of our Take-Down Policy (
Subjects: Q Science
Divisions: Divisions > Division of Natural Sciences > Chemistry and Forensics
SWORD Depositor: SWORD Copy
Depositing User: SWORD Copy
Date Deposited: 11 Nov 2022 16:42 UTC
Last Modified: 11 Nov 2022 16:42 UTC
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