Patent ID: 6815666
Filing Date: 2004-11-09
Classification: H01J

Abstract:
An accelerator mass spectrometer comprising:a single stage electrostatic accelerator having an air insulated negative high voltage electrode, and an acceleration column, extending between the high voltage electrode and a ground potential; a multiply selectable negative carbon ion source located within the high voltage electrode, capable of producing negative ions from a plurality of samples; an ion filter located within the high voltage electrode positioned to receive and to separate by mass, negative ions from the multiply selectable negative carbon ion source, the ion filter arranged to inject molecular weight 14 ions into the acceleration column; at least one Faraday cup positioned to receive molecular weight 12 ions; an ion stripper at the ground potential, in ion beam receiving relation with the acceleration column; an ion filter at ground potential, in ion receiving relation with the ion stripper; an ion detector at ground potential in ion receiving relation with the ion filter.