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Elemental analysis of water and air solids by neutron activation analysis

Description: Instrumental neutron activation analysis was used to determine the elemental concentrations in water and air solids samples collected on Nucleopore and Whatman filters from the Walker Branch Watershed. The results from this study show that the trace element concentrations removed by water from the watershed vary seasonally, as well as geographically. The data point up the usefulness and versatility of absolute neutron activation analysis. The NBS Standard Orchard Leaves were assayed in a similar manner, and good agreement was obtained between results here and standard values. (auth)
Date: January 1, 1975
Creator: Bate, L.C.; Lindberg, S.E. & Andren, A.W.
Partner: UNT Libraries Government Documents Department

Neutron activation techniques for the measurement of trace metals in environmental samples

Description: Neutron activation techniques for measuring trace metals in fresh waters, seawater, marine organisms, sediments, and atmospheric particulates are discussed. Principles of neutron activation analysis, neutron irradiation facilities and procedures, and sample preparation including preconcentration and postirradiation separations are outlined. (109 references) (LK)
Date: January 1, 1974
Creator: Robertson, D.E. & Carpenter, R.
Partner: UNT Libraries Government Documents Department

Provenance studies of Sgraffiato and Late Green Glazed wares from Siraf, Iran

Description: Results of neutron activation analyses of 23 elements in ceramic archaeological specimens are given. Various wares are divided into the following categories: early Sgraffiato, late Sgraffiato, late Green A, late Green B, and Samarra ware. Results are given on the following elements: Al, Ca, Dy, Mn, Na, K, U, Sm, La, Ti, Lu, Co, Sc, Fe, Cs, Cr, Ni, Eu, Ce, Hf, Ta, Th, and Yb. (JGB)
Date: March 1, 1975
Creator: Michel, H.V.; Asaro, F. & Frierman, J.D.
Partner: UNT Libraries Government Documents Department

The Determination of Trace Amounts of Uranium by Neutron Activation Analysis

Description: Abstract: "The determination of trace concentrations of uranium in synthetic materials, ores, soils and water by neutron radioactivation analysis is described. The principles of the activation analysis method as applied to trace uranium determination, the processing of irradiated specimens, and some examples of the results obtained by this method of analysis are discussed in this paper."
Date: August 24, 1953
Creator: Mahlman, H. A. & Leddicotte, G. W.
Partner: UNT Libraries Government Documents Department

Analytical comparison of various Egyptian soils, clays, shales, and some ancient pottery by neutron activation

Description: as a basis for classiftcation of clays and for tracing the origin of the parent materials used in pottery manufacturing, Nine pottery specimens were analyzed as a very preliminary test of the potential of correlation between clay and pottery compositions. (LK)
Date: January 1, 1973
Creator: Tobia, S.K. & Sayre, E.V.
Partner: UNT Libraries Government Documents Department

NEUTRON ACTIVATION ANALYSIS

Description: A description of the ORNL neutron activation analytical service is presented. Techniques and measurement limits are also discussed as well as general applications. (J.R.D.)
Date: July 1, 1959
Creator: Leddicotte, G.W. & Reynolds, S.A.
Partner: UNT Libraries Government Documents Department

Neutron Activation and Other Analytical Data for Plutonic Rocks from North America and Africa: Appendix D. Microfiche Tables

Description: Tables of data containing the results of a literature search, a limited chemical analytical program, and visits to three alkaline-rock localities to accompany a report of the findings of establishing criteria for determining if a site had uranium resource potential. The criteria were applied to various sites in the U.S.; those results are also reported, with additional information about ongoing study.
Date: 1978
Creator: Price, Van; Fay, W. M. & Cook, J. R.
Partner: UNT Libraries Government Documents Department

The Identification and Determination of Trace Amounts of Rare Earth Elements in Graphite by Neutron Activation

Description: Abstract: "A method is described for the identification and quantitative determination of trace amounts of rare earths in graphite by measurement of the energies and decays of the activities induced by neutron irradiation. The specific rare earth elements identified are europium and samarium. During the development of this method, the half-lives of Eu-152 and Sm-153 were determined. These are reported as 9.32 +/- 0.04 hours and 46.34 +/- 0.23 respectively."
Date: September 1, 1949
Creator: Ross, A. M.
Partner: UNT Libraries Government Documents Department

Preparing Oregon State University to Meet the Research Challenges of the Global Nuclear Energy Partnership Final Scientific/Technical Report

Description: The OSU Radiation Center requested $100,000 under the Global Nuclear Energy Partnership University Readiness program to provide for graduate student support, reactor equipment upgrades, and irradiation support. A portion of the funds requested were used to support the graduate education of a graduate student for a period of one year. The remaining funds were utilized to enhance the irradiation facilities of the Oregon State TRIGA® Reactor as well as to offset the costs of irradiations for initial investigations where grant funding is not available. The focus of this effort was to create an environment that would enhance facilities and equipment at Oregon State University which emphasize GNEP related themes, specifically material science analytical capabilities for the next generation of nuclear reactors. These enhancements included development of a prompt gamma neutron activation analysis analytical capability, digital reactor data logging, electronic dosimetry for researchers, replacement of sample grapples, and irradiation/analytical services.
Date: October 8, 2008
Creator: Reese, Steven R.
Partner: UNT Libraries Government Documents Department

METHOD AND APPARATUS FOR QUANTITATIVE NEUTRON ACTIVATION ANALYSIS OF LARGE SAMPLES

Description: A method and apparatus were devised to irradiate multiple samples of large physical size simultaneously in a nonuniform neutron flux. A capsule containing the samples and flux monitors is rotated about an axis at constant speed with samples fixed in a symmetrical geometry so that each position receives the same integrated neutron flux. (auth)
Date: January 1, 1964
Creator: Hutchin, W H
Partner: UNT Libraries Government Documents Department

Geologic Features of Areas of Abnormal Radioactivity South of Ocala, Marion County, Florida

Description: From abstract: Areas of abnormal radioactivity south of Ocala, Marion County, Fla., discovered in 1953 by aerial survey, were investigated by surface examination and by 10 power auger drill holes. Interbedded clay, clayey sand, and uraniferous phosphorite occur in the areas of anomalous radioactivity. Miocene fossils occur at three localities in these beds which are evidently outliers of Miocene sediments on the Ocala limestone of Eocene age. The preserved outliers are southwest of the main belt of Miocene sediments. The principal uraniferous rocks are clayey, sandy, pellet phosphorite that occurs in beds a few feet thick, and very porous, phosphatic sand rock which makes abundant float at many places. Apatite forms the phosphate pellets in the unweathered phosphorite. The very porous, phosphatic sand rock is the highly leached residuum of the pellet phosphorite and is composed mainly of quartz, kaolinite, wavellite, and crandallite ( pseudowavellite2). It closely resembles the aluminum phosphate rock of the "leached zone" of the Bone Valley formation in the land-pebble phosphate district.
Date: March 1956
Creator: Espenshade, Gilbert H.
Partner: UNT Libraries Government Documents Department

NEUTRON ACTIVATION ANALYSIS

Description: The program of neutron activation analysis service at Oak Ridge National Laboratory is described. The techniques used, the limits of measurement, and the general applications of the method are discussed. (T.R.H.)
Date: July 22, 1958
Creator: Leddicotte, G.W. & Reynolds, S.A.
Partner: UNT Libraries Government Documents Department

Investigations in Automated Activation Analysis

Description: Introduction: The Texas A. and M. Activation Analysis Research Laboratory has been studying the basic technology of activation analysis and its applications since 1958, under the spondorship of the Division of Isotopes Development, U. S. Atomic Energy Commission, and more recently, the National Aeronautics and Space Administration. The information presented in this report summarizes the progress which has been made in these efforts during the period from May 1, 1961, to October 31, 1962.
Date: November 1, 1962
Creator: Fite, Lloyd E.; Wainerdi, Richard E. & Steele, Edgar L.
Partner: UNT Libraries Government Documents Department