Radiant energy – Invisible radiant energy responsive electric signalling – Semiconductor system
Reexamination Certificate
2008-01-22
2008-01-22
Porta, David (Department: 2884)
Radiant energy
Invisible radiant energy responsive electric signalling
Semiconductor system
C250S256000, C250S253000, C250S581000, C250S301000
Reexamination Certificate
active
07321123
ABSTRACT:
A radiation detector operating at high temperatures is shown comprising a LuAP scintillating material for producing light when excited by incident radiation, a photocathode, and an electron multiplier. The photocathode is deposited directly onto the surface of the scintillating material that is oriented toward the electron multiplier. In a preferred embodiment, a metal flange is hermetically sealed to the scintillating material and this is fusion welded to the electron multiplier to create a vacuum envelope. This invention is particularly useful in high temperature noisy environments such as downhole operations to detect radiation within a well hole.
REFERENCES:
patent: 2902603 (1959-09-01), Ferre
patent: 3531651 (1970-09-01), Lieber
patent: 3676674 (1972-07-01), Zaviantseff
patent: 3919577 (1975-11-01), Berninger
patent: 4396853 (1983-08-01), Caraher
patent: 4454422 (1984-06-01), Persyk
patent: 4883956 (1989-11-01), Melcher et al.
patent: 5483062 (1996-01-01), Czirr et al.
patent: 5656807 (1997-08-01), Packard
patent: 5961714 (1999-10-01), Melcher et al.
patent: 6437336 (2002-08-01), Pauwels
patent: 6818896 (2004-11-01), Pauwels et al.
patent: 2004/0200964 (2004-10-01), Lefaucheur
patent: 0456002 (1991-11-01), None
Definition of Weld—Roget's New Millenium Thesaurus, First Edition (v 1.3.1), Lexico Publishing Group, LLC. Feb. 14, 2007.<Thesaurus.com http://thesaurus.reference.com/browse/weld>.
Kovar Technical Data—http://www.hightempmetals.com/techdata/hitempKovardata.php.
Definition of flange—American Heritage Dictionary of the English Language. Retreived 2007, http://www.xrefplus.com/entry/4087945.
Photomultiplier—McGraw-Hill Encyclopedia of Science and Technology. Copyright 2005 by the McGraw-Hill Companies, Inc.
Handbook of Small Electric Motors. Yeadon and Yeadon, eds. 2001, McGraw-Hill, p. 2.84.
I. Holl, E. Lorenz, G. Mageras, “A Measurement of the Light Yield of Common Inorganic Scintillators”, IEEE Transactions on Nuclear Science, vol. 35, No. 1, Feb. 1988, pp. 105-109.
C. L. Melcher, R. A. Manente, and J. S. Schweitzer, “Applicability of Barium Fluoride and Cadmium Tungstate Scintillators for Well Logging”, IEEE Transactions on Nuclear Science, vol. 36, No. 1, Feb. 1989, pp. 1188-1192.
Yao Xiaoguang, “A Study of Light Collection Efficiency in Scintillation Detectors”, Nuclear Instruments and Methods in Physics Research 228, 1984, pp. 101-104, Elsevier Science Publishers B.V.
Stephen E. Derenzo, and John K. Riles, “Monte Carlo Calculations of the Optical Coupling Between Bismuth Germanate Crystals and Photomultiplier Tubes”, IEEE Transactions on Nuclear Science, vol. NS-29, No. 1, Feb. 1982, pp. 191-195.
Kazumasa Takagi and Tokuumi Fukazawa, “Cerium-Activated GD2SIO5 Single Crystal Scintillator”, Appl. Phys. Lett. 42(1), Jan. 1, 1983, pp. 43-45, 1983 American Institute of Physics.
M. Laval, M. Moszynski, R. Allemand, E. Cormoreche, P. Guinet, R. Odru, and J. Vacher, “Barium Fluoride—Inorganic Scintillator for Subnanosecond Timing”, Nuclear Instruments and Methods 206, 1983, pp. 169-176, North-Holland Publishing Company.
W. W. Moses and S. E. Derenzo, “Cerium Fluoride, A New Fast, Heavy Scintillator”, IEEE Transactions on Nuclear Science, vol. 36, No. 1, Feb. 1989, pp. 173-176.
D. F. Anderson, “Properties of the High-Density Scintillator Cerium Fluoride”, IEEE Transactions on Nuclear Science, vol. 36, No. 1, Feb. 1989, pp. 137-140.
Shinzou Kubota, Shirou Sakuragi, Satoshi Hashimoto and Jian-Zhi Ruan, “A New Scintillation Material: Pure CSI with 10 NS Decay Time”, Nuclear Instruments and Methods in Physics Research A268, 1988, pp. 275-277, Elsevier Science Publishers B.V.
M. Moszynski, D. Wolski, T. Ludziejewski, M. Kapusta, A. Lempicki, C. Brecher, D. Wisniewski, A. J. Wojtowicz, “Properties of the New Luap: CE Scintillator”, Nuclear Instruments and Methods in Physics Research A385, 1997, pp. 123-131, Elsevier Science B.V.
C. D'Ambrosio, F. De Notaristefani, H. Leutz, D. Puertolas, and E. Rosso, “X-Ray Detection with a Scintillating Yap-Window Hybrid Photomultiplier Tube”, IEEE Transactions on Nuclear Science, vol. 47, No. 1, Feb. 2000, pp. 6-12.
A. H. Sommer, “Photoemissive Materials—Preparation, Properties, and Uses”, Robert E. Krieger Publishing Company, Huntington, New York, 1980.
Groves Joel L.
Liberman Art
Simonetti John
Stoller Christian
Ziegler Wolfgang
Castano Jaime
Gaudier Dale
Green Yara B
Porta David
Schlumberger Technology Corporation
LandOfFree
Method and apparatus for radiation detection in a high... 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 for radiation detection in a high..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for radiation detection in a high... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2769154