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US 6,787,762 B2Granted
Time dispersive spectrometer using digital switching means
AssigneeSandia National Laboratories
InventorsEdward E. Tarver, III, William F. Siems
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Abstract
Methods and apparatus are described for time dispersive spectroscopy. In particular, a modulated flow of ionized molecules of a sample are introduced into a drift region of an ion spectrometer. The ions are subsequently detected by an ion detector to produce an ion detection signal. The ion detection signal can be modulated to obtain a signal useful in assaying the chemical constituents of the sample.
Claims3
A method of time dispersive spectroscopy, comprising:
- ionizing a sample to provide a flow of ions comprising said sample;
- modulating the flow of ions into a drift region of a spectrometer
- obtaining an ion detection signal representative of differing velocities of constituents of said sample;
- modulating the ion detection signal, wherein said modulation means comprises a high speed digital switch;
- and
- assaying the constituents of the sample.
3 more elements
Dependencies are inferred from the claim text.