8,730 Matching Results

Search Results

Advanced search parameters have been applied.

Radioisotopes at Work for Agriculture

Description: Introduction: The Office of Isotopes Development of the United States Atomic Energy Commission has requested that Stanford Research Institute prepare a report on the applications of radioisotopes in agriculture.
Date: October 1959
Creator: Homan, A. Gerlof & Tarrice, Richard R.
Partner: UNT Libraries Government Documents Department

Review of Radioisotopes Program, 1964

Description: Report issued by the Oak Ridge National Laboratory discussing a review of the Radioisotopes Program during 1964. Research and experimental projects conducted during 1964 is presented. This report includes tables, illustrations, and photographs.
Date: May 1965
Creator: Gillette, J. H.
Partner: UNT Libraries Government Documents Department

Theoretical Study of Fission Product Gaseous Activity from a Homogeneous Reactor

Description: From abstract: Buildup of gaseous radioisotopes which are expected to be found in the atmosphere above a solution-fueled reactor has been calculated as a function of operating time. Krypton, iodine, xenon, and bromine have been considered. Direct fission and daughter yields are included in the summations of activities. Decay upon shutdown following various periods of equilibrium operation are tabulated.
Date: 1954
Creator: Donaldson, J. R.
Partner: UNT Libraries Government Documents Department

Equations Used for Calculation of Data by the Feedback Method

Description: The following report studies a method of assay where an unknown sample is determined by comparison with a standard sample of known isotopic ratio. The purpose is to acquaint the technical personnel with the fundamentals of the feedback method of assaying samples of TF6.
Date: October 26, 1945
Creator: Happ, G. P. & Cameron, A. E.
Partner: UNT Libraries Government Documents Department

IsotopesProduction Reactor: Summary of Complete Design

Description: Report describing an Isotope Production Reactor, which may be of interest to industrial groups studying the possibilities of entering the radioactive isotopes production field. Detailed drawings and specifications for the construction of the reactor are included.
Date: 1955
Creator: Winkleblack, R. K
Partner: UNT Libraries Government Documents Department

Radioactive Isotopes of Bismuth.

Description: Five isotopes of bismuth occur in nature. Using particle accelerators providing helium ions up to 40 Mev in energy and deuterons up to 20 Mev in energy, it was possible to produce and identify two artificial radioactive isotopes. With the advent of the 184-inch Berkeley syncho-cyclotron and its hundreds of Mev energies, it was possible to form highly neutron-deficient bismuth isotopes extending more than ten mass units below stable Bi(209).
Date: April 6, 1950
Creator: Neumann, H. M.
Partner: UNT Libraries Government Documents Department

Development and Evaluation of Large Volume Scintillation Detectors and Their Application to Radioisotope Process Control

Description: Preliminary phases of this investigation that have been completed include basic studies to determine optimum detector engineering characteristics and static tests of a number of designs. A pilot system for dynamic testing of the detectors in simulated process control applications is presently in operation.
Date: November 1963
Creator: Perry, J. Kent
Partner: UNT Libraries Government Documents Department

Removal of Radioisotopes From Solution by Earth Materials From Eastern Idaho

Description: Abstract: Naturally occurring earth materials from Idaho, primarily from localities near the National Reactor Testing Station (NRTS), were used in laboratory tests for the removal of radioisotopes from aqueous solutions. These earth materials included lignitic deposits, clay-like materials, and specific minerals; ion exchange resins were also considered for a specific application. The aqueous solutions were low-level radioactive cooling water or synthetic solutions made up to represent low-level radioactive wastes at the NRTS. Cation exchange capacities and other properties which affect the removal of radioisotopes from solution were determined the cation exchange capacities varied from 0.006 to 1.0 meq/g of solid. Earth materials with cation exchange capacities greater than 0.3 meq/g, in general, had distribution coefficients in excess of 1000. The highest distribution coefficients for cesium and strontium occurred in the pH range from 6.0 to 9.0 The possible use of these materials for decontaminating low-level radioactive waste at the NRTS is discussed. The result of laboratory studies using these materials and an organic ion exchange resign for decontaminating a specific NRTS waste are given. A material high in clinoptilolite from a location near the NRTS was considered to be the most promising material for use in large beds or ion exchange-type columns.
Date: April 1964
Creator: Wilding, M. W. & Rhodes, D. W. (Donald Walter), 1919-
Partner: UNT Libraries Government Documents Department

Evaluation of a Method to Calculate the Sum-of-Fractions for Multiple Radionuclides that Uses Aquifer Concentrations of Radionuclides that Change with Respect to Time

Description: This report evaluates a new method to calculate the sum-of-fractions (SOF) for multiple radionuclides. The purpose of this report is to determine the potential benefits of the new method for the first set of five slit trenches.
Date: December 18, 2002
Creator: Collard, L.B.
Partner: UNT Libraries Government Documents Department

In-Situ Sample Preparation for Radiochemical Analyses of Surface Water

Description: A new method for improved radionuclide sample analysis of surface water has been demonstrated at the Savannah River Site, a U.S. Department of Energy production facility, currently in standby. The method makes uses of selective solid phase extraction (SPE) disks being placed in a modified portable aqueous sampler.
Date: November 12, 1998
Creator: Beals, D.M.
Partner: UNT Libraries Government Documents Department

Investigating proton emitters at the limits of stability with radioactive beams from the Oak Ridge facility

Description: By using beams from the Holifield Radioactive Ion Beam Facility at ORNL, it should be possible to identify many new ground-state proton emitters in the mass region from Sn to Pb. In these investigations nuclei produced in fusion-evaporation reactions will be separated from incident ions and dispersed in mass/charge with a recoil mass separator and then implanted into a double-sided Si strip detector for study of proton (and {alpha}-particle) radioactivity. This paper summarizes data presently extant on proton emitters and then focuses on tests and initial experiments that will be carried out with stable beams and with radioactive ions as they are developed at the Oak Ridge facility.
Date: October 1, 1996
Creator: Toth, K. S.; Batchelder, J. C.; Zganjar, E. F.; Bingham, C. R.; Wauters, J.; Davinson, T. et al.
Partner: UNT Libraries Government Documents Department

The Adsorption of Radioactive Isotopes on Precipitates

Description: This thesis concerns the investigation of radioisotopes as indicators for precipitation reactions. As a precipitate forms in the presence of a radioisotope, adsorption may take place on its surface. If this adsorption changes markedly at the stoichiometric point it will be possible to use this variation as an indicator for the reaction.
Date: January 1954
Creator: Bulloch, Newman Payne
Partner: UNT Libraries

Production Separations of Fission-Product Groups for the Radioisotope Program

Description: Report issued by the Oak Ridge National Laboratory discussing the production separation for the radioisotope program. As stated in the abstract, "a general description is given of five years' experience in routine production of fission products of high concentration and high activity levels for the radioisotope program. Details of construction and production processes are given for two systems which were built on ion-exchange principle" (p. 2). This report includes illustrations, and photographs.
Date: August 13, 1952
Creator: Schallert, P. O.
Partner: UNT Libraries Government Documents Department

TRANSPORT OF RADIONUCLIDES IN FRESH WATER SYSTEMS. Report of a Working Meeting Held at University of Texas, Austin, January 30-February 1, 1963

Description: Nineteen papers presented at the Conference on the Transport of Radionuclides in Fresh Water Systems are given. Separate abstracts were prepared for 18 papers; one was previously abstracted for NSA. (M.C.G.)
Date: July 1, 1963
Creator: Kornegay, B.H.; Vaughan, W.A.; Jamison, D.K. & Morgan, J.M. Jr. eds.
Partner: UNT Libraries Government Documents Department