Determination of the metastable dissociation pathways for chromium/oxygen cluster ions sputtered from potassium chromate and dichromate using the ion-neutral correlation method
Van Stipdonk, Michael J. Justes, Dina R. Schweikert, Emile A.
Van Stipdonk, Michael J.
Justes, Dina R.
Schweikert, Emile A.
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2000-12-26
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Chromium,Cluster ions,Fragmentation pathways,Metastable dissociation,Plasma desorption
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M.J Van Stipdonk, D.R Justes, E.A Schweikert, Determination of the metastable dissociation pathways for chromium/oxygen cluster ions sputtered from potassium chromate and dichromate using the ion-neutral correlation method, International Journal of Mass Spectrometry, Volume 203, Issues 1–3, 2000, Pages 59-69, ISSN 1387-3806, https://doi.org/10.1016/S1387-3806(00)00264-5.
Abstract
Event-by-event bombardment and detection, coincidence counting, and the ion-neutral correlation method were used to study the dissociation of chromium/oxygen and chromium/oxygen/potassium cluster ions in the drift region of a reflectron time-of-flight (TOF) mass spectrometer. The cluster ions were sputtered from potassium chromate and dichromate by the impacts of 252Cf fission fragments. The dissociation channel observed for the fragmentation of negative cluster ions was the emission of CrO3/-. The positive secondary cluster ions decayed by shedding K+. Decay fraction measurements were also performed to gain information about the relative stability to secondary ion dissociation and/or neutralization. © 2000 Elsevier Science B.V.
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Elsevier
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International Journal of Mass Spectrometry
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1387-3806