Patent ID: 7884332
Filing Date: 2011-02-08
Classification: H01J

Abstract:
1. An ionization detector, comprising: a detector body in which charge carriers are produced by absorption of radiation; said detector body having a first face; an electrode on said first face of said detector body; said detector body having a second face substantially perpendicular to said first face; said detector body having a third face substantially perpendicular to said first face and substantially parallel to said second face; a second electrode formed on said second face of said detector body; a third electrode formed on said third face of said detector body; said detector body having a fourth face substantially perpendicular to said first face and substantially perpendicular to said second face; said detector body having a fifth face substantially perpendicular to said first face and substantially parallel to said fourth face; a fourth electrode formed on said fourth face of said detector body; a fifth electrode formed on said fifth face of said detector body; a DC bias voltage source connected between said fourth electrode and said fifth electrode to apply a bias voltage across the detector body to separate and collect the charge carriers by polarity; an AC voltage source connected between the second electrode and said third electrode to apply an oscillating voltage to oscillate charge carriers within said detector body; a readout device connected to said electrode on said first face.