Boots – shoes – and leggings
Patent
1993-09-01
1996-06-18
McElheny, Jr., Donald E.
Boots, shoes, and leggings
G06F16700
Patent
active
055284957
ABSTRACT:
A gamma ray or x-ray detector for borehole use includes a cadmium zinc telluride crystal having the general formula CD.sub.1-x Zn.sub.x Te, where x represents the zinc fraction of the material and preferably is within the range of 0.05.ltoreq.x.ltoreq.0.95. The noise edge and energy resolution characteristics of the detector may be improved by surface treating the crystal to reduce leakage current. The detector has particular application to bulk density and photoelectric absorption factor logging.
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"Properties of CdZnTe Crystals Grown By A High Pressure Bridgman Method", F. P. Doty et al., Extended Abstracts, The 1991 U.S. Workshop on the Physics and Chemistry of Mercury Cadmium Telluride and Other II-VI Compounds, Dallas, Texas, Oct. 1991.
"Cd.sub.1-x Zn.sub.x Te Gamma Ray Detectors", J. F. Butler et al., IEEE 1991 Nuclear Science Symposium and Medical Imaging Conference, Santa Fe, NM, Nov. 1991.
"Gamma- and X-Ray Detectors Manufactured from Cd.sub.1-x Zn.sub.x Te Grown by a High Pressure Bridgman Method", J. F. Butler et al., EMRS 1992 Spring Meeting, Strasbourg, France, Jun. 2-5, 1992, (Session F-IX.2).
"X-Ray Detector Physics and Applications", Richard B. Hoover, SPIE Proceedings, vol. 1736, Jul. 1992, pp. 43.53.
"Growth and Characterization of the Complete Cd.sub.1-x Zn.sub.x Alloy Series", R. Triboulet et al., Journal of Crystal Growth, 65(1983) pp. 262-269.
Hyden Martin D.
McElheny Jr. Donald E.
Pojunas Leonard W.
Schlumberger Technology Corporation
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