Resource Type
Collection
Serial/Series Title
Atomic Energy Commission Reports
164
Hanford Works Reports
68
University of California Radiation Laboratory Reports
62
Oak Ridge National Laboratory Reports
46
HW (Series)
43
UCRL (Series)
24
Los Alamos National Laboratory Reports
22
AECU (Series)
15
General Electric Company Atomic Power Reports
13
NYO (Series) (New York)
13
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404 Matching Results
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Relative Cross Sections for Photo Fission and Photo Neutron Emission
Abstract: The yields of U²³⁷ and a fission product were measured as a function of maximum betatron energy, The ratio of the number of fissions divided by the number of U²³⁷ atoms increases with increasing maximum betatron energy. This is consistent with the picture that the higher-energy gammas leave the U²³⁷ atoms with enough excitation energy (above photofission and photoneutron thresholds) to also decay by fission or neutron emission. This secondary process increases the number of fissions and decreases the U²³⁷ yield, this increasing the above ratio.
Date:
May 20, 1952
Creator:
Duffield, Robert B. & Huizenga, John R.
Object Type:
Report
System:
The UNT Digital Library
The Absorption Spectrum of Hydrated Americium Chloride
The following document focuses on the study of the absorption spectra of americium chloride. Large samples and a spectrograph of great dispersion were used.
Date:
May 2, 1952
Creator:
Stover, Betsy Jones & Conway, John G.
Object Type:
Report
System:
The UNT Digital Library
Radiations of 6.7d U²³⁷
Abstract: The radiations of U²³⁷ have been studied using a magnetic lens beta ray spectrometer and scintillation spectrometers for betas and gammas singly and in coincidence. A beta with an end point energy of 245 keV was found along with evidence for the existence of lower energy components. Gammas of energy 27, 42, 49, 59, 166, 208, 269, 354, 431, and 467 keV were found, and probably a gamma of 102 keV. The decay scheme constructed gives a total decay energy for this isotope of 512 keV.
Date:
May 14, 1952
Creator:
Wagner, F., Jr.; Freedman, M. S.; Engelkemeir, D. W. & Huizenga, John R.
Object Type:
Report
System:
The UNT Digital Library
The Furnace Spectrum of Plutonium
Abstract: "The spectrum of plutonium has been observed over the temperature range of 2000 to 2600 C and a wavelength coverage of 3476 to 6888 A. The spectrum was excited in a modified King furnace."
Date:
May 12, 1953
Creator:
Conway, John G.
Object Type:
Report
System:
The UNT Digital Library
Liquid-Liquid Extraction
Abstract: "Extraction equipment of the multistage mixer-settler type has been found useful for providing the intensive contact between phases that is required in processes involving complex compounds of the heavy metals. In this report, the factors of mixer-settler design and operation are discussed with reference to the known types of mixer-settler units. Following this review, a detailed description is given of mixer-settler units constructed and installed in this laboratory."
Date:
May 1953
Creator:
Davis, Milton Wickers, Jr.; Hicks, Thomas E. & Vermeulen, Theodore
Object Type:
Report
System:
The UNT Digital Library
Boundary Disturbances in High Explosive Shock Tubes
From abstract: High velocity disturbances are observed to propagate along the walls of a high explosive operated shock tube in advance of the plane shock. Experiments are presented which determine the dependence of the geometry, energy, and velocity of the disturbance on such variables as the gas contained in the shock tube, the shock strength, and the roughness and composition of the supporting boundary. A model is constructed to explain the flow within the disturbance. Arguments are presented which show the disturbance to result from radiation originating in the luminous plane shock...The purpose of this paper is to present the results of initial investigations made in an effort to describe the phenomenon of strong shocks developed in a shock tube by the detonation of high explosive charge.
Date:
May 26, 1952
Creator:
Shreffler, R. G. & Christian, R. H.
Object Type:
Report
System:
The UNT Digital Library
Capture Cross Section of Si for Thermal Neutrons
The following report analyzes different values and measurements that give the same results for the captured cross section of thermal neutrons for Si.
Date:
May 6, 1942
Creator:
Coon, J. H.
Object Type:
Report
System:
The UNT Digital Library
Neutron Streaming in Steel: The Dependence of the Streaming on the Nickel Content of the Steel
The following report analyzes whether there is a difference between the neutron streaming in the "armor plate" and 347 stainless steel.
Date:
May 25, 1953
Creator:
Schamberger, Robert D. & Shore, Ferdinand J.
Object Type:
Report
System:
The UNT Digital Library
Tentative Procedures for Analysis of HCP Process Materials
Abstract: The procedures recommended for analysis in Department 190 Laboratories, in the Limits Control Laboratory, and in the Analytical Development Laboratories, of all process materials from the HCP cycle are presented in a stepwise manner. A description of the characteristics of each sample type along with a brief description of factors involved in the Analytical Quality Control program is included.
Date:
May 28, 1947
Creator:
Belknap, Herbert J.; Nessle, G. J. & Grimes, W. R.
Object Type:
Report
System:
The UNT Digital Library
Removing Traces of Boron From Beryllium Oxide by Means of Methyl Alcohol
Report discussing tests that were carried out to determine if a few parts per million of boron can be removed directly from beryllium oxide powder without chemically changing the BeO during the process.
Date:
May 12, 1947
Creator:
Sweeton, F. H. & Rogers, Lockhard Burgess
Object Type:
Report
System:
The UNT Digital Library
Thermal Test Unit
Report discussing a performance evaluation of the Thermal Test Unit, a piece of test equipment fabricated to "aid the Hanford Works in experimentally determining heat transfer characteristics for a particular application."
Date:
May 31, 1950
Creator:
Cohen, A. & Rede, G. R.
Object Type:
Report
System:
The UNT Digital Library
Fundamental Equations Describing Neutron Behavior in a Cavity
This report provides fundamental equations and maps to calculate neutron behavior in a spherical cavity.
Date:
May 22, 1951
Creator:
Willmer, D. B. & Imhoff, D. H.
Object Type:
Report
System:
The UNT Digital Library
Uranium - Zirconium Explosion in Nitric Acid
The following report analyzes several reported incidents of uranium-rich zirconium-uranium explosions. This report offers notes designed to describe conditions sufficient to cause an explosion with an 80% wt. uranium alloy.
Date:
May 11, 1953
Creator:
Russell, R. B.
Object Type:
Report
System:
The UNT Digital Library
Crystallography of Some of the Transition Element Beryllides
A crystallographic study of the transition element beryllides was undertaken in support of phase diagram work. These beryllides are very high melting, and the use of ordinary methods make it difficult to determine stoichiometry. We have succeeded in establishing the compositions and complete crystal structure description of all of the room temperature stable or metastable compounds of the beryllides of niobium, tantalum, titanium zirconium, hafnium, vanadium, chromium and molybdenum. Since some of the structures found were not previously reported, complete structure determinations had to be done.
Date:
May 24, 1960
Creator:
Zalkin, Allan, 1926- & Sands, Donald, 1929-
Object Type:
Report
System:
The UNT Digital Library
Project Hobo : Densities and Velocities Measured on Specimens from Instrument and Shot Holes
Abstracts. Results are given for bulk-density and pulse-velocity measurements performed on specimens of the Project Hobo medium. Test techniques, sample handling, and specimen preparation are described. Values are tabulated in terms of sample origin and geological identity.
Date:
May 2, 1960
Creator:
Guido, Raymond S. & Warner, Stanley E.
Object Type:
Report
System:
The UNT Digital Library
Project Hobo : Shear and Compressional Velocity Measurements
Abstract. Three groups of 100 foot holes were drilled vertically downward from the floor of U 12e main tunnel and U 123.03 drift at the Nevada Test Site. Distances between holes in each group varied from 13 to 375 feet. One hole in each group was used a a 'shot hole'; the others for seismometers to records the energy generated in the 'shot hole'. Two types of recordings were made. One for dilatational or longitudinal "P" waves and one for transverse or shear "S" waves. Simultaneous recordings were made on photographic paper and on magnetic belts with a minimum of three "specimen" records at each hole, for each type of recording. The magnetic belts were transcribed to 1/2 inch IRIG tape for computer use. Rock density measurements were also made in the holes. From these data Poisson's Ratio, Bulk Modulus, Rigidity Modulus, and Young's Modulus were computed. Elastic constant values obtained 'in sltu' are much higher than those determined by soils laboratory tests on small rock samples. The data obtained are considered to be of exceptionally high accuracy.
Date:
May 1960
Creator:
Swain, R. J.; Heald, C. L. & Snodgrass, D. T.
Object Type:
Report
System:
The UNT Digital Library
Analysis of Six-Bar Linkage Using Digital Computer
Summary. The analysis of the motion of a six-bar linkage is difficult because of the large number of variables involved and the large number of calculations that have to be made for each position of the linkage. If a digital computer is used to make the calculations required for a multi-position analysis of a mechanism, it is feasible to design by analyzing a large numbers of similar linkages and selecting the optimum configuration. In this paper expressions have been derived for the output angle as a function of the input angle and the transmission angle as a function of the input angle for any single-degree-of-freedom six-bar linkage for which the parameters are known An example showing the usefulness of a six-bar computer program as a mechanism design tool is discussed.
Date:
May 20, 1960
Creator:
Dunk, A. C. & Hanson, C. L.
Object Type:
Report
System:
The UNT Digital Library
Some Potential Uses of Nuclear Explosives in the Conservation and Development of Water Resources
Abstract. The peacetime application of nuclear explosives to the conservation and development of our national water resources is, at this time, of sufficient promise to present some of the possibilities publicly. In nuclear explosives man has at his disposal and service, a powerful source of energy - a new tool - that we believe can be utilized safely to excavate channels and lake basins, or to create conduits of broken permeable material and underground reservoirs. In surveying the possible applications of nuclear explosives, the following ideas are among those worthy of serious consideration: (a) the use of nuclear explosives for the economic movement of large volumes of earth in the construction of earth fill dames, (b) the use of nuclear explosives for the diversion of a stream from a river system, whose flow is largely lost to the sea, into another stream channel leading to an arid section or a closed basin, (c) the use of nuclear explosives to create a recharge basin or a conduit to a subsurface aquifer for fresh water recharge, and (d) the use of nuclear explosives to create off-channel reservoirs for the elimination of saline waters through recharge to a mineralized aquifer and by evaporation.
Date:
May 24, 1960
Creator:
{{{name}}}
Object Type:
Report
System:
The UNT Digital Library
Materials Testing Reactor Project : Site Plan, Design Report No. 36
The following report is meant to record the premises upon which the site plan for the NTR is already established.
Date:
May 3, 1950
Creator:
Guzik, R. F. & Link, L. E.
Object Type:
Report
System:
The UNT Digital Library
The Development of a Melting Method for Conversion of Zirconium Sponge to Corrosion Resistant Ingot
This report covers an investigation meant to find the feasibility of producing corrosion resistant zirconium from sponge by special melting techniques. The zirconium metal has certain required specifications, such as: the metal must be free from bafnium, and it must be free from other impurities of undesirable neutron cross section.
Date:
May 4, 1950
Creator:
National Research Corporation (U.S.)
Object Type:
Report
System:
The UNT Digital Library
Radioassay Techniques for Low-Grade Uranium Ores and Mineral-Dressing Products: Progress Report A-28
Report discussing assaying techniques used in the Department of Metallurgy at the Massachusetts Institute of Technology, as well as the equipment used for the techniques.
Date:
May 12, 1947
Creator:
Pannell, James H.
Object Type:
Report
System:
The UNT Digital Library
Elementary Theory of Neutron Sources in Reactors
The following report discusses neutron sources in reactors, discussing general conditions of the study using a flux reactor.
Date:
May 18, 1951
Creator:
Masket, Albert Victor Hugo, 1914-
Object Type:
Report
System:
The UNT Digital Library
Preparation of Ductile Zirconium: Progress Report for April 1949
Report discussing the progress made on a research project for the preparation of ductile zirconium during April 1949.
Date:
May 13, 1949
Creator:
DiPietro, W. O.; Findlay, G. R. & Mellen, G. L.
Object Type:
Report
System:
The UNT Digital Library
The Surface Reaction Between Oxygen and Thorium
Abstract: The rate of reaction of oxygen with arc-melted and rolled iodide thorium has been found to obey the parabolic rate law in the temperature range of 850 to 1415 C at 1 atmosphere pressure. The rate constant can be expressed as k = 6 x 10⁷ x e⁻⁶³³⁰⁰/RT cm²/sec. The energy of activation, 63,300 cal/mole, has a probable error of 2,100 cal/mole.
Date:
May 26, 1953
Creator:
Gerds, A. F. & Mallett, Manley William, 1909-
Object Type:
Report
System:
The UNT Digital Library