An ion source is a device that creates atomic and molecular ions. Ion sources are used to form ions for mass spectrometers, optical emission spectrometers, particle accelerators, ion implanters and ion engines. The electrons may be created by an arc discharge between a cathode and an anode. An electron beam ion source (EBIS) is used in atomic phys...
Found on
http://en.wikipedia.org/wiki/Ion_source
(from the article `mass spectrometry`) Ion sources...needles, from which it passes to the outer surface of the terminal. A carefully designed Van de Graaff generator insulated by pressurized gas can ... ...increases as predicted by the theory of relativity.) This isochronicity makes it possible for a high voltage, reversing in polarity ...
Found on
http://www.britannica.com/eb/a-z/i/37
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