Radiant energy – Invisible radiant energy responsive electric signalling – With or including a luminophor
Reexamination Certificate
2007-06-12
2011-11-29
Hannaher, Constantine (Department: 2884)
Radiant energy
Invisible radiant energy responsive electric signalling
With or including a luminophor
Reexamination Certificate
active
08067742
ABSTRACT:
An apparatus for detecting and determining a source azimuth for gamma radiation includes at least two scintillation crystals at angular offsets and directed toward a common plane of detection, photodetectors adjacent to each of the scintillation crystals for converting the light response of the scintillation crystals into distinct electrical signals, and a digital processing system configured to analyze spectral data from each electrical signal produced for each crystal. The digital processing system monitors a finite number of spectral windows corresponding to a selected set of radioisotopes, and uses one or more of the electrical signals to determine a signal intensity and a likely source azimuth for a detected radioisotope in the plane of detection. Another scintillation crystal directed outside of the common plane of detection may be used for three-dimensional detection. Related methods for detection and location of gamma ray sources are discussed.
REFERENCES:
patent: 3436539 (1969-04-01), Wilcox
patent: 3539806 (1970-11-01), Humphrey
patent: 7321121 (2008-01-01), Testardi
patent: 2005/0104001 (2005-05-01), Shah
patent: 2005/0121618 (2005-06-01), Fowler et al.
Fennell Michael D
Winso James H
Cogan Robert P.
Continuum Law
Hannaher Constantine
Space Micro Inc.
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