Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Chemical analysis
Reexamination Certificate
2007-11-27
2009-12-22
Le, John H (Department: 2863)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Chemical analysis
C250S363020, C250S370010, C250S370130, C702S076000, C702S085000
Reexamination Certificate
active
07636638
ABSTRACT:
A system for combining the spectral data from multiple ionizing radiation detectors of different types and having different photopeak energy resolutions. First, baseline estimation is performed on each spectral histogram separately, discerning peak regions from underlying continuum using respective peak response functions. All spectra are subsequently rebinned to the same energy calibration and the peak spectra are convolved to produce a single convolution spectrum. All peak counts are redistributed locally according to the convolution spectrum in energy regions proportional to respective local energy resolution. The summation of these redistributed peak spectra can then be analyzed as a single spectrum using a common photopeak response and energy calibration. This process can be embodied in software or firmware. A preferred hybrid system might include a combination of lower resolution, higher efficiency detectors and higher resolution, lower efficiency detectors.
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Morichi Massimo
Russ William Robert
Canberra Industries, Inc.
Carstens David W.
Carstens & Cahoon LLP
Le John H
Washam Steven H.
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