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DOI	10.2172/138338
报告编号	LBL--29700
来源ID	OSTI_ID: 138338
	Studies of the mobility of uranium and thorium in Nevada Test Site tuff
	Wollenberg, H.A.; Flexser, S.; Smith, A.R. [Lawrence Berkeley Lab., CA (United States)]
英文摘要	Hydro-geochemical processes must be understood if the movement of radionuclides away from a breached radioactive waste canister is to be modeled and predicted. In this respect, occurrences of uranium and thorium in hydrothermal systems are under investigation in tuff and in rhyolitic tuff that was heated to simulate the effects of introduction of radioactive waste. In these studies, high-resolution gamma spectrometry and fission-track radiography are coupled with observations of alteration mineralogy and thermal history to deduce the evidence of, or potential for movement of, U and Th in response to the thermal environment. Observations to date suggest that U was mobile in the vicinity of the heater but that localized reducing environments provided by Fe-Ti-Mn-oxide minerals concentrated U and thus attenuated its migration.
出版年	1991
报告类型	Technical Report
语种	英语
国家	美国
来源学科分类	05 NUCLEAR FUELS ; 54 ENVIRONMENTAL SCIENCES ; THORIUM ; RADIONUCLIDE MIGRATION ; TUFF ; URANIUM ; ADSORPTION ; DECAY ; FISSION TRACKS ; GAMMA SPECTROSCOPY ; HEATING ; HYDROLOGY ; IRON OXIDES ; MANGANESE OXIDES ; MATHEMATICAL MODELS ; MICRORADIOGRAPHY ; MINERALS ; NEVADA TEST SITE ; PROGRESS REPORT ; RADIOACTIVE WASTE FACILITIES ; RADIOACTIVE WASTE STORAGE ; SIMULATION ; SORPTIVE PROPERTIES ; TITANIUM OXIDES ; Yucca Mountain Project
URL	http://www.osti.gov/scitech/servlets/purl/138338
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/264460
推荐引用方式 GB/T 7714	Wollenberg, H.A.,Flexser, S.,Smith, A.R. [Lawrence Berkeley Lab., CA . Studies of the mobility of uranium and thorium in Nevada Test Site tuff,1991.