Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 12 of 12 for “"Gamma ray spectrometry"”.
-
Elemental analysis by alpha-induced prompt gamma-ray spectrometry
Alpha-induced prompt gamma-rays generated by excitation, or in nuclear reactions, were studied for 57 elements, to select those elements having gamma-rays of sufficient intensity for analytical application. Several light, medium and heavy elements show promise. Of these nitrogen, fluorine, …
-
Pluton Zonation Unveiled by Gamma-ray Spectrometry and Magnetic Susceptibility; A Case Study of the Sheeprock Granite, Western, Utah
A radiometric survey of the zoned 21 Ma, A-type Sheeprock granite, western Utah, combined with measurements of magnetic susceptibility and field observations were analyzed using a geographic information system. The intrusion spans 25 square km and is roughly eliptical in shape with its long axis …
-
Geothermal regime of the Williston Basin in North Dakota
… in North Dakota, heat production values from gamma ray spectrometry on Precambrian basement core, tens of thousands of formation temperatures from the National Geothermal Data System borehole temperature data set, gravity and magnetic data (processed to generally characterize thickness and …
-
Development of Monte Carlo models of a gamma-ray nondestructive assay system for nuclear material control and accountability
… and diversion. Nondestructive assay (NDA) via gamma-ray spectrometry is one of the most common methods employed by NMCA programs to determine the amount or composition of SNM. However, accurate gamma-ray NDA of SNM can be difficult in certain scenarios due to the complex distributions and …
-
An Outcrop Based Study of the Weches Formation in Sabine County, Texas: Investigating Its Unconventional Resource Potential through the Study of Stratigraphy, Sedimentology, Petrology, and Geochemistry
… Texas, were sampled, measured, and logged with gamma-ray spectrometry (GRS). Sedimentology and petrology characteristics of Weches samples were analyzed through thin section, scanning electron microscopy, energy-dispersive spectroscopy, X-ray diffraction, and GRS Th/K ratios analyses. The source …
-
Salinity, radon, and radon precursors in the soils of Grand Forks County, North Dakota
… by fluorimetry, equivalent uranium (eU) by gamma-ray spectrometry, and for soil salinity. </p><p>Equivalent uranium, equivalent thorium, potassium-40, and derivative maps were produced using aerial γ-ray data collected during the National Uranium Resource Evaluation (NURE) program in 1979. …
-
Three-dimensional eolian bounding surface architecture of the Entrada sandstone, Utah: expanding our understanding of reservoir heterogeneity in wet eolian systems
… (e.g., measured stratigraphic sections, handheld gamma-ray spectrometry, petrography) with advanced technologies (e.g, RTK GPS data, drone-derived digital outcrop models) to precisely resolve the kilometer-scale three-dimensional stratigraphic architecture of wet eolian Middle Jurassic Entrada …
-
Efficiency calibration of a gamma-ray detector for measuring environmental radiation
… calibrations for various sample geometries using gamma-ray spectrometry. The measurements using reference sources of known activity were carried out using two sample holders (Marinelli Beaker (1000 ml) and, a cylindrical pill bottle (100 ml)), and a point source. The IAEA reference materials …
-
Critical assessment of the MEDUSA gamma ray detection system for radon flux measurement on a tailings dam
… the investigation of a new- technique based on gamma ray spectrometry to quantitatively assess the radon flux from the mine tailings dam. The system is called Multi Element Detector for Underwater Sediment Activity (MEDUSA). Initially, this technique was uniquely designed to measure the …
-
Gamma-ray spectroscopy of excited states in ¹⁷⁷Hf and ¹⁸²W
Thesis (M.S.)--Michigan State University. Dept. of Chemistry, 1974