Radiant energy – Invisible radiant energy responsive electric signalling – Semiconductor system
Reexamination Certificate
2005-07-06
2008-11-18
Porta, David P. (Department: 2884)
Radiant energy
Invisible radiant energy responsive electric signalling
Semiconductor system
C250S370090, C250S370010
Reexamination Certificate
active
07453068
ABSTRACT:
A method of detecting ionizing radiation is provided. The method includes detecting ionizing radiation using a detector assembly having a pixelated semiconductor substrate, each pixel including a central region and a region of variable response, each pixel further including at least one anode, the detector assembly including a grid electrode coupled to a first surface of the semiconductor substrate such that the grid electrode circumscribes the central region of at least one pixel anode, the detector assembly further including a cathode coupled to a second surface of the semiconductor substrate, the method comprising, measuring a first signal between the at least one pixel anode and the cathode wherein the anode is electrically biased with respect to the cathode, measuring a second signal between the grid electrode and the cathode wherein the grid electrode is electrically biased with respect to the cathode, combining the magnitude of the first signal and the magnitude of the second signal to obtain a total signal from the semiconductor substrate, and outputting the total signal.
REFERENCES:
patent: 5677539 (1997-10-01), Apotovsky et al.
patent: 6002134 (1999-12-01), Lingren
patent: 6037595 (2000-03-01), Lingren
patent: 6046454 (2000-04-01), Lingren et al.
patent: 6169287 (2001-01-01), Warburton
patent: 6218668 (2001-04-01), Luke
patent: 6333504 (2001-12-01), Lingren et al.
patent: 6528797 (2003-03-01), Benke et al.
patent: 6553092 (2003-04-01), Mattson et al.
patent: 6727505 (2004-04-01), Benke et al.
patent: 7141797 (2006-11-01), Yokoi et al.
Doty, F.P. et al.; Pixellated CdZnTe Detector Arrays; Nuclear Instruments and Methods in Physics Research A 353 (1994) 356-360.
Lachis, Uri; CdTe Semiconductor Gamma Radiation Detectors Equipeped with Ohmic Contacts; Feb. 9, 1998; http://urila.tripod.com/dcte.htm; 4 pgs.
McGregor, D.S. et al; Single Charge Carrier Type Sensing with a Parallel Strip Pseudo-Frisch-Grid CdZnTe Semiconductor Radiation Detector; Applied Physics Letter, vol. 72, No. 7; Feb. 16, 1998; 4 pgs.
McNeil, W.J. et al; Single-Charge-Carrier-Type Sensing with an Insulated Frisch Ring CdZnTe Semiconductor Radiation Detector; Applied Physics Letter, vol. 84, No. 11; Mar. 15, 2004; 3 pgs.
Prettyman, Thomas H. et al.; Characterization of a Large-Volume, Multi-Element CdZnTe Detector; http://www.nis5.lanl.gov/; 10 pgs.
GE Medical Systems Israel Ltd.
Porta David P.
Small Dean D.
The Small Patent Law Group
Vu Mindy
LandOfFree
Method and apparatus of detecting ionizing 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 Method and apparatus of detecting ionizing radiation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus of detecting ionizing radiation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4051052