Radiant energy – Invisible radiant energy responsive electric signalling – Semiconductor system
Reexamination Certificate
2007-06-07
2009-08-18
Porta, David P (Department: 2884)
Radiant energy
Invisible radiant energy responsive electric signalling
Semiconductor system
Reexamination Certificate
active
07576326
ABSTRACT:
Provided are a device and method for detecting and analyzing radiation. A detection unit includes a detector, and generates signal pulses from photons of the radiation. Each signal pulse has an amplitude that is determined by an interaction of the photons at a depth of the detector. A pulse deficit correction trigger corrects for charge deficits that occur from the photon interaction across the depth of the detector by removing depth dependence in the amplitudes of the signal pulses. A multi-channel analyzer receives the signal pulses and generates a spectrum from the received signal pulses, and receives a trigger signal that is generated by the pulse deficit correction trigger to remove the depth dependence in the amplitudes of the signal pulses.
REFERENCES:
patent: 4253023 (1981-02-01), Whited
patent: 4893018 (1990-01-01), Saitou
patent: 5854489 (1998-12-01), Verger et al.
patent: 6420710 (2002-07-01), Verger et al.
patent: 6940589 (2005-09-01), Suyama et al.
patent: 2005/0246140 (2005-11-01), O'Connor et al.
patent: 2007/0235657 (2007-10-01), He et al.
patent: 0375131 (1990-06-01), None
patent: 1329700 (2003-07-01), None
L. T. Jones and P. B. Woollam, “Resolution Improvement in CdTe Gemma Detectors Using Pulse-Shape Discrimination,” Nuclear Instruments and Methods (124), 1975, pp. 591-595, North-Holland Publishing Co.
H. H. Barrett, J. D. Eskin and H. B. Barber, “Charge Transport in Arrays of Semiconductor Gamma-Ray Detectors,” Physical Review Letters, Jul. 3, 1995, pp. 156-159, vol. 75, No. 1, Department of Radiology and Optical Sciences Center, University of Arizona, Tucson, AZ, USA.
P. N. Luke, “Unipolar Charge Sensing with Coplanar Electrodes—Application to Semiconductor Detectors,” IEEE Transactions on Nuclear Science, Aug. 1995, pp. 207-213, vol. 42, No. 4, Engineering Division, Lawrence Berkeley Laboratory, University of California, Berkeley, CA, 94720, USA.
M. A. J. Van Pamelen, C. Budtz-Jorgensen, I. Kuvvetli, “Development of CdZnTe X-ray Detectors at DSRI,” Nuclear Instruments and Methods in Physics Research, 2000, pp. 625-633, Section A 439, Elsevier Science B.V., Netherlands.
International Search Report dated Aug. 27, 2008 issued in corresponding International Application No. PCT/US2007/070583.
Eames, Dexter, “Pulse Deficit Correction Trigger for Planar CdTe Based Gamma-ray Spectrometer,” IEEE Nuclear Science Symposium Conference, Manuscript received Nov. 22, 2006.
Miles & Onello, LLP
Porta David P
Taningco Marcus H
XRF Corporation
LandOfFree
Devices and methods for detecting and analyzing radiation does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Devices and methods for detecting and analyzing radiation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Devices and methods for detecting and analyzing radiation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4129648