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Atomic Energy Commission Reports
2,863
Hanford Works Reports
844
University of California Radiation Laboratory Reports
719
HW (Series)
599
Brookhaven National Laboratory Reports
520
BNL (Series)
519
Oak Ridge National Laboratory Reports
479
UCRL (Series)
300
AECU (Series)
288
NP (U.S. Atomic Energy Commission)
224
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6,023 Matching Results
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A Study of the Effects of Some Spray Column Variables on Radiant-Heat Transfer in Spray Calcination
Calcination of liquid radioactive wastes, the process of converting metal nitrates and sulfates to oxides by heat, is under development at Hanford as a means of reducing these liquids to a dry powder or solid which can be stored safely. Radiant-heat spray calcination, one of the methods under study, was first investigated at the Oak Ridge K-25 Plant (1) as a possible method of calcining uranyl nitrate to uranium trioxide. The process has also been under extensive development at the Pulp and Paper Research Institute of Canada (2) and is designated by them as the Atomized Suspension Technique.
Date:
April 28, 1960
Creator:
Allemann, Rudolph Theodore
Object Type:
Report
System:
The UNT Digital Library
Metallurgical Laboratory, Chemical Research - Radiation Chemistry, the Effect of Radiation on Water and Aqueous Solutions of Inorganic Substances
Technical report summarizing our knowledge of the chemical effects of ionizing radiation upon water and upon aqueous solutions of inorganic compounds. The types of radiation considered are beta rays, gamma and X rays, and heavy particles, notably neutrons, deuterons, alpha rays and fission recoils.
Date:
February 22, 1944
Creator:
Allen, A. O.
Object Type:
Report
System:
The UNT Digital Library
Radiation Damage to Water
Water may decompose under radiation to give hydrogen and oxygen gases and small amounts of hydrogen peroxide. The amount of decomposition depends critically on the nature of the radiation, the kind and amount of dissolved materials present, and the temperature. Destruction of dissolved material may proceed to a greater extent than that of the water itself. The basic theory of these effects is briefly outlined. Engineering problems resulting from radiation chemical effects in water are discussed for various cases in which ordinary or heavy water is used in reactors as moderator, coolant or shielding material.
Date:
unknown
Creator:
Allen, A. O.
Object Type:
Report
System:
The UNT Digital Library
The Effect of Radiation on the Corrosion of Metals by Water
Technical report. Long-time tests have been made on the effect of various types of radiation on the corrosion of 2S aluminum in simulated W water. In no case was any acceleration of corrosion by the radiation observed; the effect of radiation, if any, appeared to be a protective one. Deuteron irradiation did accelerate the corrosion of mild steel at low flow rates in hot water of pH 6 to 7, but no appreciable effect was observed with copper, stainless steel, or tuballoy. The general theory of the effect of radiation on corrosion is discussed, with the conclusion that no acceleration of corrosion by radiation is to be expected in most cases of practical interest.
Date:
July 6, 1944
Creator:
Allen, A. O. (Augustine O.); Bowman, M. C.; Goldowski, Nathalie; Larson, R. G. & Treiman, L.
Object Type:
Report
System:
The UNT Digital Library
Apparent viscosity of simulated underground metal waste slurries
From introduction: "This report presents the apparent viscosities of supernate-sludge slurries prepared synthetically to simulate the conditions known to exist in the waste storage tanks, but with fission products and plutonium absent."
Date:
June 20, 1950
Creator:
Allen, A. W.
Object Type:
Report
System:
The UNT Digital Library
Clarification of Redox Dissolver Solution by Centrifugation with Scavenger
From statement of objectives: The purposes of the work described in this report are to provide data useful for designing and operating the dissolver solution clarification equipment to be installed in the Redox production plant.
Date:
June 6, 1950
Creator:
Allen, A. W.
Object Type:
Report
System:
The UNT Digital Library
Apparent viscosity of neutralized and concentrated raw slurry : TBP HW-no. 4 and HW flowsheet
Report describing how the neutralized aqueous waste from the TBP Metal Recovery Process will be concentrated by evaporation to minimize the requirements for underground storage tank capacity.
Date:
August 15, 1950
Creator:
Allen, A. W. & Harmon, M. K.
Object Type:
Report
System:
The UNT Digital Library
Completion Report An Automatic Fuel Element Stamping Machine
This document will be concerned with the design, operation and maintenance of an automatic fuel element stamping machine. In order to take advantage of automatic unloading and length checking at the Acme-Gridley lathes in the 313 Building, automatic stamping of fuel elements is desirable. This, along with the need for a permanent canning line identification, resulted in a request for a machine to automatically stamp HAPO fuel elements on a production basis.
Date:
January 12, 1960
Creator:
Allen, C. H.
Object Type:
Report
System:
The UNT Digital Library
Steady-State Recirculated Reactor Stability and Operational Characteristics - Water and Metal Temperature Coefficients
It is desirable that a reactor exhibit a self-regulating effect. If this were not true any disturbance to the reactor would result in a continual increase in the magnitude of the disturbance and the reactor would be unstable. In this investigation the reactor is considered to have two reactivity feed-backs: metal temperature and water temperature reactivity effects. These two variables through a metal temperature coefficient and water temperature coefficient determine not only the reactor stability but also determine many operational characteristics.
Date:
December 23, 1959
Creator:
Allen, C. W.
Object Type:
Report
System:
The UNT Digital Library
Theory of the Pinch Effect
Five Langmuir-Tonks equations given in Section V of LA-1432 were modified to give a clearer picture of the pinch effect.
Date:
unknown
Creator:
Allis, William P. (William Phelps), 1901-1999
Object Type:
Report
System:
The UNT Digital Library
Gas Discharges : Lecture Series
Most books on the subject of gas discharges describe the multiple banded structure which appears in the flow between two electrodes. This structure is actually due to the difficulty in getting electrons out of the cathode to support the discharge. These electrons are obtained by having a large enough potential drop near the cathode so that the positive ions may strike it hard enough to product secondary electrons. If one substitutes a hot cathode to produce a copious quantity of electrons, the banded structure will be radially changed. Hence the banding is not a pure property of the discharge, but is a complication brought on by the presence of electrodes.
Date:
August 1951
Creator:
Allis, William P. (William Phelps), 1901-1999 & Arnold, Wayne
Object Type:
Report
System:
The UNT Digital Library
Ceramic Investigations of UO₂
This report covers the progress made on an intensive program to develop and evaluate UO2 as a possible fuel element for the PWR.
Date:
June 16, 1955
Creator:
Allison, Adrian G. & Duckworth, Winston H.
Object Type:
Report
System:
The UNT Digital Library
Kinetics of the Los Alamos Power Reactor Experiment (LAPRE)
A theoretical study of the kinetics of a model of the Los Alamos Power Reactor Experiment (LAPRE) was made through integration of the dynamic equations with the IBM 701 computer. The stability is investigated under various conditions of power demand, rod-induced reactivity changes, and other conditions especially applicable to LAPRE. The results are given in graphical form, along with conclusions as to appropriate conditions of operation.
Date:
December 1953
Creator:
Allred, John C. & Carter, David S., 1926-
Object Type:
Report
System:
The UNT Digital Library
Neutron Diffraction Studies at the Puerto Rico Nuclear Center
A neutron diffraction program was initiated recently at the Puerto Rico Nuclear Center. The two double crystal spectrometers in use were assembled with the aid of staff members of the Brookhaven National Laboratory. The first research problem to be completed was a single crystal structure analysis of CaWO4. Choosing the origin at the 4(a) tungsten site in the tetragonal I41/a cell. the 16(f) oxygen parameters were found to be as follows: x=0.2413 ± 0.0005, y=0.1511 ± 0.0006, z=0.0861 ± 0.0001. Anisotropic temperature parameters were also determined for all atoms in the least squares analysis of the structure. The magnetic structure of CuSO4 has been determined in a continuation of a study started at Brookhaven in collaboration with Dr. P.J. Brown. Using the Wollan-Koehler-Bertaut notation, the antiferromagnetic spin ordering mode in the orthorhombic Pbnm cell is Ax, with the spin axis parallel to a. A moment of approximately 1 μB was found for the Cu2_ ion. The crystal structure of BaNiO2 was re-examined in a neutron powder diffraction study, and it was found that the earlier x-ray study of Lander is essentially correct. An alternative oxygen arrangement, for which x-rays would not have been very sensitive, had been suspected. BaNiO2 was …
Date:
October 15, 1963
Creator:
Almodovar, I; Bielen, H. J. & Frazer, B. C.
Object Type:
Report
System:
The UNT Digital Library
Thorium Isotopes Method for Dating Marine Sediments
This thesis is concerned with a possible method of improving the well-known ionium method of age determination of deep-sea sediment sections (Pet-53, Zou-58, Kul-55, Ran-54) both with respect to accuracy of individual determinations and with respect to the range of applicability of the method.
Date:
May 31, 1960
Creator:
Almodóvar, Ismael
Object Type:
Report
System:
The UNT Digital Library
On the Theory of the Compton Effect on a Meson
The equations of Proka in the field of the plane wave are considered in this paper. When the energies of the incident quantum are large, a solution is reached in a closed form. On the basis of the solutions obtained, the diffusion of light on a meson is evaluated by the method of delayed potentials.
Date:
September 11, 1944
Creator:
Alperin, M.
Object Type:
Report
System:
The UNT Digital Library
Occurrence of Technetium-98 in Nature
The non-existence of technetium in nature, long considered a fact of axiomatic validity, has become subject to considerable doubt in recent years due to the discovery of technetium in the sun and in S-type stars.
Date:
unknown
Creator:
Alperovitch, Edward A. & Miller, J. Malcolm
Object Type:
Report
System:
The UNT Digital Library
The Nuclear Spin Of Neodymium-141
The spin of neodymium-141 was measured by the method of atomic beams and found to be 3/2. A lower limit placed on the hyperfine separation of the states with total angular momentum [formula] by second-order perturbation theory shows [formula]. A prerequisite for the determination of the nuclear spin from hyperfine-structure measurements is the knowledge of the electronic structure. The ground-state configuration of neodymium is known and the value is used throughout this work.
Date:
July 3, 1961
Creator:
Alpert, Seymour S.; Budick, Burton; Lipworth, Edgar & Marrus, Richard
Object Type:
Report
System:
The UNT Digital Library
Evidence For a T = 0 Resonance in the Z[ ] System
In previous letters we have reported a Av resonance, called Y*1, observed through the study of the interaction of 1.15-Bev/c K* mesons in hydrogen in the Lawrence Radiation Laboratory 15-in. bubble chamber. We now wish to report the results of the study of the three reactions [formula](1), [formula](2) and [formula](3).
Date:
April 28, 1961
Creator:
Alston, Margaret H.; Alvarez, Luis W., 1911-1988; Eberhard, Phillippe; Good, Myron L.; Graziano, William; Ticho, Harold K., 1921-2020 et al.
Object Type:
Report
System:
The UNT Digital Library
The [Sigma/Alpha] Branching Ratio Of [Y*1]
Recently a T=1 resonance in the [Alpha w] system called [Y*1] has been observed with a mass of 1385 Mev. Two types of resonances have been predicted that might relate this observation to other elementary-particle interactions: (1) P 3/2 resonances in the Alpha w and Sigma w systems predicted by global symmetry corresponding to the (3/2, 3/2) resonance of the wN system, (2) a spin-1/2 Y-w resonance resulting from a bound state in the KN system. The position and width of the observed [Y*1] resonance agree with both theories but since the spin and parity have not yet been determined, it is impossible at present to distinguish between the two theoretical interpretations.
Date:
April 25, 1961
Creator:
Alston, Margaret H.; Alvarez, Luis W., 1911-1988; Eberhard, Phillippe; Good, Myron L.; Graziano, William; Ticho, Harold K., 1921-2020 et al.
Object Type:
Report
System:
The UNT Digital Library
Sodium Mass Transfer: III - The Application of Liquid Ammonia as a Sodium Leaching Agent
A technique is presented for liquid ammonia leaching of metallic sodium from corrosion coupons, filter elements, and sodium samples to reveal contaminants and impurities.
Date:
April 1962
Creator:
Alter, H. W. & McManus, P. A.
Object Type:
Report
System:
The UNT Digital Library
Limits of Inflammability and Ignition Temperatures of Hexone in Air and in Other Gaseous Atmospheres
The following report summarizes the data taken from a series of measurements on the combustion and ignition properties of hexone. The experiments were taken at the Bureau of Mines Central Experiment Station by their personnel, and the samples were given to them by KAPL and Hanford.
Date:
September 9, 1949
Creator:
Alter, H. Ward
Object Type:
Report
System:
The UNT Digital Library
Some Comments on the Selection of Operating Temperatures for DPR
The results of this investigation indicate that maximum electric power generation can be obtained by selecting the turbine steam temperature within a range of plus/minus 30 degrees C. from an "idealized" steam temperature. This "idealized" steam temperature is shown to depend primarily on the maximum permissible uranium temperature. The minimum available condenser temperature and the temperature rise of the coolant in the pile effect the selection of the turbine steam temperature to lesser extent.
Date:
November 16, 1953
Creator:
Altmann, Manfred.
Object Type:
Report
System:
The UNT Digital Library
The Interactions Of Strange Particles
This report is a corrected copy of the authors "rapporteur talk" at the 1959 Kiev Conference on High Energy Physics. It contains data on the rapporteur system and on interactions of strange particles with protons and neutrons, using data from bubble chambers, counters, and emulsions.
Date:
August 11, 1960
Creator:
Alvarez, Luis W.
Object Type:
Report
System:
The UNT Digital Library