Continuous time-of-flight ion mass spectrometer
AssigneeThe Regents of the University of California
InventorsHerbert O. Funsten, William C. Feldman
Life of this patent
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Abstract
A continuous time-of-flight mass spectrometer having an evacuated enclosure with means for generating an electric field located in the evacuated enclosure and means for injecting a sample material into the electric field. A source of continuous ionizing radiation injects ionizing radiation into the electric field to ionize atoms or molecules of the sample material, and timing means determine the time elapsed between arrival of a secondary electron out of said ionized atoms or molecules at a first predetermined location and arrival of a sample ion out of said ionized atoms or molecules at a second predetermined location.
Claims21
A time-of-flight ion mass spectrometer comprising:
- an evacuated enclosure;
- means for generating an electric field located in said evacuated enclosure;
- means for injecting a sample material into said electric field;
- a source of continuous ionizing radiation injecting ionizing radiation into said electric field to ionize atoms or molecules of said sample material;
- and
- timing means for determining time elapsed between arrival of a secondary electron having a particular energy out of said ionized atoms or molecules at a first predetermined location and arrival of a sample ion having a particular energy out of said ionized atoms or molecules at a second predetermined location.
Dependencies are inferred from the claim text.