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Title: Impurity ion production in alkali ion sources
Authors: Hogan, M.J. 
Ong, P.P. 
Issue Date: 1990
Citation: Hogan, M.J., Ong, P.P. (1990). Impurity ion production in alkali ion sources. Review of Scientific Instruments 61 (4) : 1338-1339. ScholarBank@NUS Repository.
Abstract: It has long been known that new alkali ion sources utilizing thermionic emission from alkali aluminosilicates can achieve high percentages of the desired ion by a sufficiently long "burn-in." Observations are reported here of instances where increased impurity ion emission can reoccur and lead to possible measurement errors in experimental systems lacking mass spectrometers. The ratio of impurity K+ ions to Na+ ions from a burned-in Na2O·Al2O3· 2SiO2 source was measured to be 0.55.
Source Title: Review of Scientific Instruments
ISSN: 00346748
DOI: 10.1063/1.1141187
Appears in Collections:Staff Publications

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