What is it about?
In glow discharge mass spectrometry, the doubly charged ion current of a sample constituent is normally three or more orders of magnitude less than that of the singly charged ion. However, it has been observed that when a titanium sample is used with neon as the plasma gas, the Ti++ signal is of the same order of magnitude as the Ti+ signal. Whilst doubly charged ions may be produced by electron impact excitation, we show that this very large Ti++ signal is due to a little-known process, Charge Transfer and Ionization (CTI).
Why is it important?
This is the first time that 'Charge transfer and ionization' (CTI) process has been identified in analytical glow discharge mass spectrometry sources.
The following have contributed to this page: Dr SOHAIL MUSHTAQ
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