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Uranium Hydrogeochemical and Stream Sediment Reconnaissance of the Shiprock NTMS Quadrangle, New Mexico/Arizona, Including Concentrations of Forty-Two Additional Elements

Description: From introduction: This report presents uranium and other elemental data resulting from the Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) of the Shiprock National Topographic Map Series (NTMS) quadrangle, New Mexico/Arizona, by the Los Alamos Scientific Laboratory (LASL).
Date: May 1980
Creator: Morgan, Terrance L. & Purson, John D.
Partner: UNT Libraries Government Documents Department

Survey of Los Alamos and Pueblo Canyon for Radioactive Contamination and Radio Assay Tests Run on Sewer-Water Samples and Water and Soil Samples Taken From Los Alamos and Pueblo Canyons

Description: "Report of the Survey of Los Alamos and Pueblo Canyon for radioactive contamination and radioassay tests run on sewer water samples and water and soil samples taken from Los Alamos and Pueblo Canyons." The objective of this report was to determine the extent and sources of radioactive contamination in the areas studied.
Date: February 20, 1947
Creator: Kingsley, William H.; Fox, Alvin; Tribby, J. F. & Doner, Elmer
Partner: UNT Libraries Government Documents Department

Safety Tests on Hand Stacking of U-235 Cubes

Description: From abstract: "Critical assembly tests have been made on the Pajarito Universal Machine to determine the safety limits of handstacking cubes of 95% U-235 in spherical geometries preparatory to making critical assemblies of U-235 in an "infinite" tuballoy tamper. The U-235 cubes were stacked as pseudospheres in a cavity at the top of a tuballoy block 12" high and 8" on a side, and the assembly tamped by locating it inside a doughnut shaped water tank whose tamping effect is equivalent to the tamping caused by personnel necessary for hand stacking."
Date: October 11, 1948
Creator: Josephson, V.; Young, D. S. & Dike, R. S.
Partner: UNT Libraries Government Documents Department

Spontaneous Fission of 48

Description: Report discussing an experiment to reinvestigate the spontaneous fission of 48 (Pu-238) in an effort to determine a more accurate value for the spontaneous fission constant that was found in a previous experiment.
Date: December 19, 1949
Creator: Jungerman, John A.
Partner: UNT Libraries Government Documents Department

Some Reactor Physics in the Rover Project

Description: From abstract: "A general and systematic development of reactor computing methods and detailed application given in Report LAMS-2255 separately is supplemented in this report for a few specific systems of interest to the Rover program. Neutron cross sections, reactor description, and computed results are given for a reactor required to have a constant (radially) power distribution at high temperatures."
Date: September 1958
Creator: Mills, C. B.
Partner: UNT Libraries Government Documents Department

Simple Critical Mass Calculations

Description: Abstract: "This report gives (1) a simple empirical equation which should yield critical mass values of homogeneous, partially moderated, unreflected spherical assemblies with an accuracy of a factor two, and (2) critical mass estimates obtained from from (1) for Oy-C-H and Oy-W-CH2 systems."
Date: October 1955
Creator: Hansen, Gordon Edward
Partner: UNT Libraries Government Documents Department

Preliminary Investigation of a Five-Crystal Scintillation Gamma-Ray Spectrometer

Description: Abstract: A five-crystal scintillation gamma-ray spectrometer was constructed for use as a Compton coincidence spectrometer or as a pair coincidence spectrometer. Preliminary tests are discussed. The efficiency in either mode of operation was found to be low; however, the backgrounds were favorable and good definition of characteristic lines was achieved...Future tests and plans for improvements are discussed."
Date: September 1958
Creator: Mills, Roger E. & Kloepper, Robert M.
Partner: UNT Libraries Government Documents Department

Pressure Balance in a Toroidal Pinch

Description: Abstract: In the study of a linear pinch, use of the equation of pressure balance has proven to be a powerful method of analyzing data taken with a magnetic probe. The toroidal pinch, however, is a geometrically more complicated object, and the use of the pressure balance equations is not so clean cut. It is the object of this note to analyze the pressure balance equations for a torus to the point where they might prove useful in interpreting probe data.
Date: December 1958
Creator: Suydam, Bergen R.
Partner: UNT Libraries Government Documents Department

Process Development of 2,2-Dinitropropyl Acrylate

Description: Abstract: Developmental production of approximately 500 pounds of 2,2-dinitropropanol and 250 pounds of 2,2-dinitropropyl acrylate was carried out in a 50-gallon capacity stainless-steel reactor system. The intermediate alcohol was produced in a yield of 73%. The ester was made with a yield of 78%. Cost studies show that the manufacturing cost for DNPA monomer should approximate $2.70 per pound on a production basis of 30,000 pounds, with an indicated plant cost of $4.60 per pound for the polymeric form.
Date: October 1955
Creator: Benziger, T. M.; Rohwer, R. K. & Stein, W. H.
Partner: UNT Libraries Government Documents Department

Fraunhofer Diffraction Pattern Produced by a Slit of Varying Width and its Application to High Speed Cameras

Description: Abstract: "A theoretical and experimental investigation is made of the diffraction pattern produced by a slit, whose aperture varies uniformly from a constant value A to zero. The results of this investigation are applied to a proposed high speed camera. It is shown that diffraction effects are very serious and cannot be neglected. It seems, unless the suggested design of this high speed camera is changed, the camera will be of little use for accurate measurements, and photographs will show too much blue to give details."
Date: November 11, 1947
Creator: Geiger, F. E. & Brixner, Berlyn
Partner: UNT Libraries Government Documents Department

Heat Treatment and Machinability of Beryllium Rod

Description: Purpose: "The purpose of this investigation was to determine whether or not the machinability of extruded beryllium rod could be improved by appropriate heat treatment. It was thought that this could be accomplished in the extruded Be rod by recrystallization without further growth of these grains. This should impart a certain degree of ductility to the metal. The investigations was divided into two parts: Part I - Heat Treatment of Beryllium Rod; Part II - Machinability of Beryllium Rod."
Date: February 19, 1946
Creator: Norhaft, P. C.
Partner: UNT Libraries Government Documents Department

The Wind Variability of Fall-Out Patterns

Description: The following report investigates part of the variability of the computed fall-out intensity patterns due to the variability of the winds, on the basis of winds from four Pacific shot days. An extreme case from Operation Sandstone is also considered.
Date: March 1956
Creator: Sherman, Leon
Partner: UNT Libraries Government Documents Department

Fabrication of Uranium Wire

Description: From abstract: "The present report describes experimental work performed to establish a procedure for the production of uranium metal wire. In all cases, the size of the initial rod was 1/2 inch diameter. Three materials were used: hot extruded tuballoy rod, high purity cast tuballoy rod, and cast U-235 rod."
Date: October 25, 1949
Creator: Anderson, R. E.; Taub, J. M. & Doll, D. T.
Partner: UNT Libraries Government Documents Department

Equations Representing Reactor System with Emphasis on KIB Digital Program

Description: "This report is written as a supplement to LAMS 2539. It is hoped that one will be able to read LAMS 2539, with emphasis on the fourth part (Memorandum N-4-79OU by 0. Farmer), with this memorandum to bridge the gaps and understand more about the model used and what the KIB Program can be used for. The system is defined by subsystems or subprograms: Thrust System, Heat Exchanger, Neutron Dynamics, Rod Actuator Dynamics, and Thermocouple Dynamics. The original Kiwi-B Flow System is included in the first part of LAMS 2539. This has been replaced by the newer system which includes a turbo-pump (per R, Bohl & E. Wheatley). This system will not be included here. Recommendations are made for improvement and more work in certain areas."
Date: August 29, 1961
Creator: Mohler, Ronald R.
Partner: UNT Libraries Government Documents Department

Effect of Temperature and Reactivity Changes in Operation of the Los Alamos Plutonium Reactor

Description: The operation of the Fast Reactor is considered in terms of normal equilibrium conditions and normal shut-down. The proposed loading, control rod adjustment and subsequent "floating" operation are discussed. Safety devices and interlocks are described. Temperature and reactivity changes are examined with respect to various system failures, phase changes, and "flashing" of the reactor. Slow changes due to faulty slug cooling are also considered. The calculations were initially based upon 10 kw operation. Performance tests of the mercury system now indicate that 20-kw operation may be feasible.
Date: May 28, 1948
Creator: Hall, David B. & Hall, Jane H.
Partner: UNT Libraries Government Documents Department

Estimated Upper Bounds to the Half-Life of Thermal Decomposition of Ammonia, Hydrogen, Methane, and Propane

Description: An estimate was made of the upper bound for the half-time of dissociation at 100 atm for ammonia, methane, and propane at 2500 deg K and hydrogen at 5000 deg K. In each case a unimolecular reactron in the homogeneous gas phase was chosen as most suitable for this purpose. Slater's theory has been used to estimate the necessary frequency factors. The upper bounds to the half- time for dissociation range from 3 x 10⁻⁷ to 6 x 10⁻⁶ sec. Extrapolation of decomposition rate data obtained at --1000 deg C and 1 atm pressure gives smaller values for the half-time of dissociation.
Date: August 1955
Creator: Herschbach, Dudley R.
Partner: UNT Libraries Government Documents Department

A Method for Rolling Uranium Foil

Description: "This report gives briefly a rather simple method for fabricating foils from uranium buttons. Two log sheets one of a U-238 run and one of a U-255 run are given."
Date: October 21, 1947
Creator: Bernard, George L., (Jr.)
Partner: UNT Libraries Government Documents Department