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Geological applications of thermoluminescence measurements made with equipment for simultaneously determining intensity, wavelength, and temperature

Description: Thermoluminescent spectra measurements at closely spaced temperatures were used to study the TL of carbonate rock near lead-zinc deposits, apparently a useful exploration tool; the radiation--induced TL of quartz, useful for uranium exploration; and thermally--induced modifications of the feldspar albite.
Date: January 1, 1978
Creator: Levy, P W
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Thermoluminescence studies having applications to geology and archaeometry

Description: Mineral thermoluminescence (TL) studies, undertaken as geophysics investigations, appear to have archaeometric applications. Measurements were made with equipment which records TL emission spectra at closely spaced temperatures. Carbonate rock containing lead-zinc deposits exhibit radiation induced TL against distance-from-ore patterns useful for mineral exploration and locating worked-out deposits. The feldspar albite has second-order TL kinetics, which can introduce dating errors. Heat induce… more
Date: January 1, 1978
Creator: Levy, P N
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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New thermoluminescence techniques for mineral exploration

Description: The thermoluminescence of carbonate host rock in the vicinity of known lead-zinc and lead-zinc-fluorite mineralization was reexamined for possible development as an exploration technique. The measurements were made with equipment for determining the thermoluminescence spectrum at closely spaced temperature intervals. Radiation-induced thermoluminescence was also measured. Samples were studied from five localities in Mexico, Southwest Africa, and the United States. Four thermoluminescence proper… more
Date: January 1, 1977
Creator: Levy, P. W.; Holmes, R. J.; Ypma, P. J.; Chen, C. C. & Swiderski, H. S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Electronic structure of defects in oxides. Final report, December 1, 1979-November 30, 1980. [. cap alpha. -Al/sub 2/O/sub 3/; MgAl/sub 2/O/sub 4/]

Description: Details of the electronic structure of F-type centers in the series of oxides SrO, CaO, ..cap alpha..-Al/sub 2/O/sub 3/ and MgAl/sub 2/O/sub 4/ have been determined using measurements of photoconductivity, luminescence, and fluorescence lifetimes. Measurements were made over the spectral range 2 to 6.5 eV and over the temperature range 4 to 350/sup 0/K. The centers were introduced into SrO by electron, on proton or neutron bombardment, into CaO and ..cap alpha..-Al/sub 2/O/sub 3/ by electron a … more
Date: January 1, 1980
Creator: Summers, Geoffrey P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Thermoluminescence of the mineral components in granite

Description: The thermoluminescence (TL) of the minerals in Climax Stock (Nevada, USA) granite has been studied. The principal mineral constituents are plagioclase, quartz, potassium feldspar and biotite. Pyrite, sphene apatite and zircon occur at one percent or less. All exhibit TL except biotite. The TL kinetics were determined for plagioclase, quartz, potassium feldspar and pyrite. Plagioclase and potassium feldspar exhibit second order and pyrite first orker kinetics. Natural TL of quartz follows second… more
Date: January 1, 1982
Creator: Schwartzman, R.G.; Kierstead, J.A. & Levy, P.W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Luminescence from self-trapped holes in manganese-doped calcium fluoride single crystals

Description: Thermally stimulated luminescence (TSL) and electron spin resonance (ESR) measurements on x-irradiated CaF/sub 2/:Mn (0.1 wt %) single crystals have been conducted in the interval 70 to 300 K. Prominent TSL peaks occur near 150 K (345- and 495-nm emission) and 200 K (predominantly 495-nm emission) with thermal decay of ESR centers at these same temperatures. Taken collectively the data suggest that 150 K TSL emission is due to mobile holes from V/sub K/ centers recombining with both trapped ele… more
Date: January 1, 1987
Creator: Jahan, M. S.; Cooke, D. W. & Alexander, C., Jr.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Energy dependence of metallic-encapsulated thermoluminescent dosimeters. Annual report

Description: The gamma-ray energy responses of encapsulated /sup 7/LiF and CaF/sub 2/:Mn thermoluminescent dosimeters were measured and compred to calculated values. This study was performed in order to improve the accuracy of gamma-ray heating measurements made in polyenergetic gamma-ray fields such as Argonne National Laboratory's Zero Power Reactors. Equations used in the development of the TERC/III computer code and code input parameters are specified. A section on TLD precision is also included. Compar… more
Date: June 1980
Creator: Simons, G. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Master schedule for CY-1981 Hanford environmental surveillance routine program

Description: The current schedule of data collection for the routine environmental surveillance program at the Hanford Site is provided. Questions about specific entries should be referred to the authors since modifications to the schedule are made during the year and special areas of study, usually of short duration, are not scheduled. The environmental surveillance program objectives are to evaluate the levels of radioactive and nonradioactive pollutants in the Hanford environs, as required in Manual Chap… more
Date: December 1, 1980
Creator: Blumer, P. J.; Sula, M. J. & Eddy, P. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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