47 Matching Results

Search Results

Results: 1 - 24 next
open access

Decay Curves for 23 Fission Products

Description: A series of decay curves is presented whereby the total U233 fission product activity associated with one kilogram of Th irradiated for various periods of time at various thermal neutron fluxes can be obtained. Fission product activities with thermal neutron fluxes less than 10(12) can be obtained by using the chart for a flux of 10(12) and the relationship log10 total U233 fission product activity 2 log10 thermal neutron flux B. The constant B is determined when the corresponding value with a … more
Date: April 23, 1948
Creator: Hanson, G. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Poor Man's Pile -- First Approximation

Description: A brief study shows that a modification of the high flux pile designed to operate at 3000 kw and suitable for experimental use in a large university or other research institution can be built for about $2,500,000 contractor's overhead not included. Of this the pile and its associated operating equipment is about one forth. The main innovations aside from reducing the power and thus eliminating much of the process water equipment are the substitution of graphite pebbles for the beryllium reflect… more
Date: April 1, 1948
Creator: Leverett, M. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Totally Enclosed Water Pump

Description: A totally enclosed water pump using an inductively rotor was built for use with water at 1000 psi and about 500° F. This type pump is applicable wherever low leakage is more important than efficiency.
Date: April 2, 1948
Creator: Untermyer, Samuel, 1912-
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Biology Division Semiannual Progress Report for Period Ending February 15, 1956

Description: Progress report of the Oak Ridge National Laboratory Biology Division providing updates on various projects, experiments, and other work. This report includes a summary of scholarly output from the division and departmental activities in cytology and genetics, mammalian genetics and development, microbial protection and recovery, mammalian recovery, pathology and physiology, general physiology, biochemistry, enzymology and photosynthesis, microbiology, plant biochemistry, and biophysics.
Date: April 20, 1956
Creator: Hollaender, Alexander & Carson, Stanley F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Chemistry Division Semiannual Progress Report for Period Ending December 20, 1955

Description: Semiannual Progress report of the Oak Ridge National Laboratory Chemistry Division providing updates on various projects, experiments, and other work in inorganic and physical chemistry, nuclear chemistry, organic chemistry, chemical physics, chemistry of separation processes, radiation chemistry, and reactor chemistry.
Date: April 13, 1956
Creator: Taylor, E. H. & Bredig, M. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Bibliography of ORNL-BSF Reports Pertinent to Swimming Pool Type Reactor Design (Revised)

Description: Much of the shielding work carried out with the Bulk Shielding Reactor (BSR) has yielded data of particular interest for the design of swimming pool type reactors, However, it is often difficult for a reactor designer to locate such data since it may be recorded in a report primarily concerned with shielding problems. Therefore, this memorandum presents a bibliography of reports from the Bulk Shielding Facility arranged according to the application of data to the various aspects of reactor desi… more
Date: April 13, 1956
Creator: Maienschein, F. C. & Johnson, E. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Air Scattering of Co60 Gamma Rays: Theory Versus Experiment

Description: For Co60 source at 15 meters, the air-scattered gamma dose rate predicted by theory is excerpted from ORNL-1575, pp. 167-203. This is compared with experimental measurements for the same source and comparable geometry reported by Convair in CVAC-170T. After applying an appropriate correction for ground scattering as estimated in Mart-55-16T (Convair), the two results are found to be in substantial agreement.
Date: April 17, 1958
Creator: Moran, Rubert S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of the Excer Process

Description: Two revised Excer process flowsheets are presented for the production of UF4 from urnayl nitrate solution. In both, the uranium is sorbed on a cation-exchange resin and eluted with aqueous HF. In one, the resulting UO2F2 in dilute HF is mixed with dilute sulfuric or hydrochloric acid and electrolytically reduced in a cation-exchange-membrane cell, and the precipitated UF4·0.75H2O is dried and dehydrated to anhydrous UF4. A cost of 20¢ per pound of reduced uranium is estimated. In the other, amm… more
Date: April 17, 1956
Creator: Marinsky, J. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Disassembly and Postoperative Examination of the Aircraft Reactor Experiment

Description: The Aircraft Reactor Experiment (ARE)was successfully concluded in November of 1954, and a detailed report of the operation was published the following year. At that time it was thought that an extensive examination of the reactor and system components after disassembly was warranted. It was realized, of course, that the level of radioactivity of the components would necessitate extensive delays in the examinations. Since examination of a few critical ARE samples showed nothing unexpected, much… more
Date: April 15, 1958
Creator: Cottrell, W. B.; Crabtree, T. E.; Davis, A. L. & Piper, W. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Isolation and Purification of Americium

Description: Gram amounts of americium were separated quantitatively from kilogram quantities of lanthanum to yield an americium product approaching 90% purity. The remaining impurity was chiefly yttrium. Elution of americium from 25% loaded Dowex 50 resin column with 0.15 M citric acid— 0.10 M diammonium citrate — 0.3 M ammonium nitrate, pH 3.3 gave a product containing 99% of the americium with a La/Am ratio of 1/100 or less in one fourth of a column volume, in this case about 1 100-fold volume reduction.… more
Date: April 17, 1956
Creator: Campbell, D. O.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Homogenous Reactor Project Quarterly Progress Report For Period Ending January 31, 1955

Description: The reactor equipment cell is expected to be completed by February 15. While filled with water, the tank was inspected for leaks, and the few leaks found will have been repaired by February 15. All orders for construction materials placed prior to this quarter have been received. New requisitions issued during the quarter total $16,000. Work orders were issued, and fabrication of all low-pressure-system components was begun in the ORNL shops. The thermal shield around the reactor vessel was spe… more
Date: April 6, 1955
Creator: McDuffie, H. F. & Kelly, D. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Aircraft Nuclear Propulsion Project Quarterly Progress Report for the Period Ending December 31, 1957

Description: Quarterly report reporting on the progress of the Aircraft Nuclear Propulsion Project at the Oak Ridge National Laboratory during the period. Includes information on aircraft reactor engineering, chemistry, metallurgy, radiation damage, and reactor shielding.
Date: April 24, 1958
Creator: Miller, A. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Aircraft Nuclear Propulsion Project Quarterly Progress Report for the Period Ending March 10, 1953

Description: Quarterly report reporting on the progress of the Aircraft Nuclear Propulsion Project at the Oak Ridge National Laboratory during the period. Includes information on reactor theory and design, shielding research, and materials research. Each section contains and separate introduction and summary.
Date: April 16, 1953
Creator: Cottrell, W. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Aircraft Nuclear Propulsion Project Quarterly Progress Report for the Period Ending March 10, 1953

Description: Quarterly report reporting on the progress of the Aircraft Nuclear Propulsion Project at the Oak Ridge National Laboratory during the period. Includes information on reactor theory and design, shielding research, and materials research. Each section contains and separate introduction and summary.
Date: April 16, 1953
Creator: Cottrell, W. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

An Assessment of Certain Avenues of Improvement for Nuclear Desalination Technology

Description: From the questions which have been asked, I gather that I am expected to bring you the news of the latest exciting developments in desalination at the Oak Ridge National Laboratory. However, the agenda for this meeting does not include reports of unfinished investigations; moreover, although there are some new ideas afoot at Oak Ridge, they are aimed toward the very large stations which are somewhat beyond the scope of the more current interests represented here. So instead of presenting new de… more
Date: April 1964
Creator: Hammond, R. Philip
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Cumulative Bibliography of Literature Examine by the Radiation Shielding Information Center

Description: This bibliography represents the first cumulative edit of the literature examined by the Radiation Shielding Information Center recently established at the Oak Ridge National Laboratory. Its two major sections consist of a list of documents by subject category and of an author index. The document list covers nine major subjects with a total of 118 categories; however, literature specimens have not yet been entered for all categories. If a document applies to more than one category, it is listed… more
Date: April 1963
Creator: Radiation Shielding Information Center (U.S.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Recent Studies of Boiling Burnout

Description: Five recent investigations of the critical heat flux in water systems are described. These studies were conducted in the interval from early 1963 through the present. The five studies are (1) Pool studies: inherent uncertainty in the critical heat flux; (2) Pool studies: heat transfer inside of horizontal, open ended heated tubes immersed in a pool; (3) Pool studies: natural-convection burnout of closed vertical channels; (4) Forced-convection investigations; subcooled boiling and burnout with … more
Date: April 1964
Creator: Gambill, W. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Production of Fuel Assemblies for the Materials Testing Reactor Mock-Up Critical Experiments

Description: Technical report outlining the fabrication of twenty-five fuel assemblies and three shim-safety rod fuel sections for use in the Materials Resting Reactor Mock-Up Critical Experiments. Results show that two of the assemblies exceeded tolerance in a few of the key dimensions, but were considered acceptable and as a consequence, production was carried out with no rejects. [From Abstract]
Date: April 9, 1951
Creator: Smith, C. D.; Drosten, F. W. & Kerze, F., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The X-Ray Spectra of Polonium Atomic Number 84

Description: From abstract: "Two samples, each containing an estimated 10 curies (2 mg) of polonium-210, were purified by vacuum distillation and evaporated onto oblique sections of X-ray targets made of copper. Four lines of the K series and ten lines of the L series of the X-ray spectrum of polonium were recorded with a one-meter transmission crystal spectrograph and a 25-centimeter Bragg spectrograph, respectively. Measured wavelengths agree approximately with values predicted by extrapolation of Moseley… more
Date: April 15, 1952
Creator: Peed, W. F.; Burkhart, L. E.; Staniforth, R. A. & Fauble, L. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Continuous Solvent Recovery Process Using Pulse Contacting Column

Description: From abstract: "This report presents the progress in the laboratory development of a continuous solvent recovery process for the tributyl phosphate-diluent mixture used in the Purex Process. Investigations were made with 1/2" diameter pulse columns, using a nine foot sodium carbonate contacting column and a four foot water wash column."
Date: April 1, 1952
Creator: Ellison, C. V. & Land, J. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Summary of Operating Experience with Decelerating Ion Receivers

Description: From abstract: "The following report presents a summary of operating experience with decelerating receivers for ion beam reception. Sample calculations for design of such a receiver for the isotopes of lithium are presented. Estimates of maximum production and requirements to attain such production are given. The maximum ion beam envisioned is 17 amperes obtained from extrapolation of experimental results."
Date: April 1, 1952
Creator: Wilkinson, P. E. & Keim, C. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Recovery of Nitrogen Oxides and Rare Gas Fission Products From the Nitric Acid Dissolution of Irradiated Uranium

Description: From abstract: "Data obtained in laboratory studies of the 'fumelses dissolving' of irradiated uranium are presented. Procedures for handling dissolver off-gases are proposed."
Date: April 30, 1952
Creator: Gresky, A. T.; Snyder, M. D.; Blair, J. A.; Lovelace, R. C.; Corbin, L. T. & Tyson, W. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Metallurgy Division Quarterly Progress Report: Period Ending October 31, 1951

Description: This quarterly progress report discusses ongoing research and experiments at Oak Ridge National Laboratory in the Metallurgy Division. This report discusses thorium research, the mechanical properties of metals including thorium, uranium, inconel, and z-nickel, the ANP program (including the following topics: the physical chemistry of liquid metals, and welding research), and the materials testing reactor program.
Date: April 21, 1952
Creator: Frye, John H., Jr., 1908-2001 & Bridges, W. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Homogeneous Reactor Project Quarterly Progress Report: November 15, 1951

Description: From summary: "Construction of the HRE facility was essentially complete on November 15, 1951 except for minor revisions and final testing. A program of engineering and nuclear tests of the system hasbeen drawn up, and the tests will be started early in the next quarter. The only major HRE items for which design is not complete are the samplers for the fuel, [gas], and reflector systems. These will be completed in time to be installed before critical experiments begin; meanwhile, temporary samp… more
Date: April 1, 1952
Creator: Swartout, J. A.; Secoy, C. H.; Welton, T. A.; Winters, C. E. & Thompson, W. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen