Radiant energy – Ionic separation or analysis – With sample supply means
Reexamination Certificate
2006-03-21
2006-03-21
Font, Frank G. (Department: 2883)
Radiant energy
Ionic separation or analysis
With sample supply means
C250S281000, C250S282000, C250S283000, C250S286000, C250S287000
Reexamination Certificate
active
07015463
ABSTRACT:
A mass spectrometer that includes an ionizing source, a sample holder arranged in a beam path of the ionizing source, an ion detector disposed to receive ions extracted from a sample when held by the sample holder and irradiated by the ionizing source. The mass spectrometer also includes an extraction electrode arranged proximate to the sample holder, and a drift tube arranged between the extraction electrode and the ion detector. In the mass spectrometer, the extraction electrode and the drift tube are movable together relative to the sample holder, which is held at a fixed position.
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Cotter Robert J
English Robert D.
Gardner Benjamin D.
El-Shammaa Mary
The Johns Hopkins University
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