Particle detection

Details Particle detection Particle detection

2007-11-20

2007-11-20

Benson, Walter (Department: 2858)

Electricity: measuring and testing

Determining nonelectric properties by measuring electric...

C324S071400, C324S452000, C073S028020, C073S865500, C702S029000, C356S335000

Reexamination Certificate

active

10595082

ABSTRACT:
Particle detection and characterizing apparatus has an insulating tube along which the particles flow. Five electrodes spaced along the outside of the tube are connected via amplifiers to a processor arranged to measure the charge on the particles. The apparatus also includes a laser and photomultiplier tube arranged to measure the size of the particles so that the nature of the particles can be characterized from their electrical charge and size.

REFERENCES:
patent: 3763428 (1973-10-01), Preist
patent: 3852768 (1974-12-01), Carmichael et al.
patent: 4117715 (1978-10-01), Hoenig
patent: 5214386 (1993-05-01), Singer et al.
patent: 6553849 (2003-04-01), Scofield et al.
patent: 6862536 (2005-03-01), Rosin

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