Radiant energy – Ionic separation or analysis – With sample supply means
Reexamination Certificate
2006-06-27
2006-06-27
Wells, Nikita (Department: 2881)
Radiant energy
Ionic separation or analysis
With sample supply means
C250S281000, C250S282000, C250S286000, C250S287000
Reexamination Certificate
active
07067804
ABSTRACT:
An ion lens is used to focus ions produced by various types of ion sources which are substantially at atmospheric pressure. The ions are focused to the inlet of a downstream mass spectrometer or other devices which require a larger and more stable ion flux improved performance. The ion lens is mounted in close proximity to the sprayer tip. The ion lens increases the total ion count rate summed over all of the generated ions. The ion lens may also be employed to vary the degree of ion fragmentation and the charge state pattern of the generated ions. The ion lens may also result in a more stable ion signal. Furthermore, more than one ion lens may be used. This invention may also be extended to multisprayer ion sources.
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Chen David D. Y.
Douglas Donald J.
Schneider Bradley B.
Bereskin & Parr
Smith II Johnnie L
The University of British Columbia
Wells Nikita
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