title: Location, identification, and size distribution of depleted uranium grains in reservoir sediments.
abstract: The location, nature, and size distribution of uranium-rich grains in sediment layers can be identified by sunbursts of etched particle tracks if each sample is pressed against a track detector, next irradiated with thermal neutrons, and the detectors then chemically etched to reveal fission tracks. The total track abundance from the sample is a measure of the 235U content; hence, if the bulk uranium (mostly 238U) has been measured, the two sets of results give the depletion or enrichment of the uranium. Sunbursts of tracks mark the locations of low-abundance, high-uranium grains allowing them to be singled out for further study.
authors.affiliation: Department of Geology, Union College, Schenectady, NY 12308, USA.
authors.forename: D
authors.initials: D
authors.lastname: Lo
authors.forename: R L
authors.initials: RL
authors.lastname: Fleischer
authors.forename: E A
authors.initials: EA
authors.lastname: Albert
authors.forename: J G
authors.initials: JG
authors.lastname: Arnason
mesh_terms: D005843:Geography; D019015:Geologic Sediments / Q000032:analysis*; D008906:Mining; D010316:Particle Size; D011834:Radiation Monitoring / Q000379:methods*; D012680:Sensitivity and Specificity; D012990:Soil Pollutants, Radioactive / Q000032:analysis*; D014501:Uranium / Q000032:analysis*
chemical_list: D012990:Soil Pollutants, Radioactive; D014501:Uranium