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Title: Thermionic aluminosilicate sources of Tl+ ions
Authors: Zhou, Z.L.
Tan, T.L. 
Ong, P.P. 
Issue Date: 1995
Citation: Zhou, Z.L., Tan, T.L., Ong, P.P. (1995). Thermionic aluminosilicate sources of Tl+ ions. Review of Scientific Instruments 66 (11) : 5249-5251. ScholarBank@NUS Repository.
Abstract: Thermionic filament sources of Tl+ ions were made using tungsten wire coated with synthetic thallium aluminosilicates in the β-eucryptite (Tl2OAl2O32SiO2) and two other compositions (2Tl2OAl2O32SiO2 and 2Tl2OAl2O34SiO2). Three different methods for the production of aluminosilicate melts were used. The performance characteristics as thermionic emission sources of Tl+ ions based on total emission current and purity of ion emission as functions of time and filament surface temperature were studied and compared. Our results indicated that the sample of composition ratio of 2Tl2OAl2O 32SiO2, which was produced by resistance heating under atmospheric pressure in air, is an optimum Tl+ ion source at temperatures between 1150 and 1350°C after 150 h of continuous heating. © 1995 American Institute of Physics.
Source Title: Review of Scientific Instruments
ISSN: 00346748
DOI: 10.1063/1.1146093
Appears in Collections:Staff Publications

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