Electricity: measuring and testing – Determining nonelectric properties by measuring electric... – Particle counting
Patent
1995-09-29
1997-02-18
Regan, Maura K.
Electricity: measuring and testing
Determining nonelectric properties by measuring electric...
Particle counting
2503851, G01N 2700
Patent
active
056044313
ABSTRACT:
The Integrated Grid Particle Impact Detector (IGMID) uses an integrated semiconductor grid system to detect hypervelocity article impacts on space vehicles and to indirectly determine article diameter of impacting particles. The detector consists of multiple sets of parallel aluminum electrical paths. The first set of parallel aluminum electrical paths is located on the top surface of the detector. The second and subsequent sets are located some distance below the top surface of the detector with the paths being perpendicular and/or parallel to the first set of paths. When a particle traveling at hypervelocity impacts the detector one or more detector paths will be vaporized, resulting in an electrically open path. This in turn will result in the output of the n-type and p-type CMOS circuits to change state. Using standard CMOS VLSI design techniques, specific electrically open grid paths can be identified. With knowledge of which grid paths are electrically open, an estimate of the crater size caused by an impacting particle can be determined. Using the estimate of crater size, scaling laws and models can be used to determine an estimate of particle diameter.
REFERENCES:
patent: 3626189 (1971-12-01), Berg
patent: 3694655 (1972-09-01), Auer
patent: 3715590 (1973-02-01), Auer
patent: 3853750 (1974-12-01), Volsy
patent: 3891851 (1975-06-01), Fletcher et al.
patent: 4453226 (1984-06-01), Hobbs et al.
patent: 4491926 (1985-01-01), Okada et al.
patent: 5153430 (1992-10-01), Gammel et al.
patent: 5187673 (1993-02-01), Carver
patent: 5347130 (1994-09-01), Berthold
patent: 5376878 (1994-12-01), Fisher
Auton William G.
Regan Maura K.
The United States of America as represented by the Secretary of
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