13 Matching Results

Search Results

Results: 1 - 13
open access

Preliminary Report on Thermal and Electrical Conductivities of Some Plutonium-Aluminum Alloys

Description: Abstract: "The thermal and electrical conductivities of a series of Pu-Al alloys have been determined in the range 0.12 atomic percent Pu. The conductivities are approximately proportional to the volume of free aluminum."
Date: March 15, 1950
Creator: Gibney, Robert B. & Sandenaw, Thomas A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Inhour Equation for the Tuballoy Tamped Oralloy sphere

Description: Exponential rise times, T, of neutron flux in an Oy-Tu assembly have been measured for a set of points essentially equally spaced reactivity-wise in the interval between delayed and prompt critical corresponding to [infinity] > T > 5 seconds. The relationship between positive period and reactivity thus obtained is used to decide (preferentially) between two currently used but divergent collections of delayed neutron data, specifically with respect to the relative abundances of delayed neutrons … more
Date: July 15, 1951
Creator: Hansen, Gordon E. (Edward), 1920-
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Neutron Energy Distributions Inside the Fast Reactor

Description: This technical report presents results of nuclear plate work carried out to determine the neutron energy distribution inside the Los Alamos fast reactor. Most of the distributions which were investigated are valid over the energy region from 0.4 to 6 Mev. The results show that at the center of the reactor pot about 65% of the neutrons are located below 1 Mev in a rather narrow energy region which has a maximum in the neighborhood of 0.5 to 0.6 Mev. Above 2 Mev the energy distribution is similar… more
Date: December 15, 1950
Creator: Nereson, Norris G., 1918-2007
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Spectrophotometric Determination of Uranium

Description: Measurement of the color intensity of the uranium thiocyanate complex is discussed as a method for the quantitative determination of uranium. Two procedures for amounts from 1 microgram to 1 milligram are described, and standard curves are shown. The effects of numerous foreign ions are shown, and methods of removal for some of these are discussed.
Date: March 15, 1952
Creator: Henicksman, Arthur L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Neutron Distribution Measurements at Pajarito by Means of Photographic Emulsion

Description: A method using photographic emulsions for the study of neutron distributions is described. The construction of a simple machine for producing experimental critical assemblies in which the method has been used is reported. Sources of error are discussed. Curves of the perturbations when small spheres of various materials are placed in the center of the assembly are shown.
Date: May 15, 1952
Creator: Young, Dwight S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Determination of Bismuth in Plutonium-Bismuth Solutions

Description: Bismuth analytical methods were investigated for the purpose of selecting procedures which are satisfactory for the analysis of solutions containing plutonium and bismuth. The gravimetric procedure which is recommended for samples containing these two elements includes removal of the plutonium by peroxide precipitation, separation of the bismuth by precipitation with sodium carbonate, and final ignition of the bismuth as a phosphate. Necessary equipment and experimental technique are described.… more
Date: September 15, 1951
Creator: Bergstresser, K. S. (Karl Samuel), 1909-2004
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Determination of Cadmium in Plutonium-Cadmium Solutions

Description: Determination of cadmium in plutonium-cadmium solutions was successfully accomplished by separating the plutonium as an insoluble peroxide, evaporating the solution containing the cadmium, and weighing the latter as a sulfate. with 5 t0 20 mg of cadmium and similar amounts of plutonium, the 95% confidence limits for the average of triplicate determinations was to be +- 0.3 percent of the cadmium in the sample. When samples contained as little as 5 mg of cadmium, it was necessary to correct the … more
Date: September 15, 1951
Creator: Bergstresser, K. S. (Karl Samuel), 1909-2004 & Rex, Elgin H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Relative Physiological and Toxicological Prosperities of Americium and Plutonium

Description: The relative physiological and toxicological properties of americium and plutonium have been studied following their intravenous administration to rats. The urinary and fecal excretion of americium was similar to that of plutonium administered as Pu(N03)4. The deposition of americium the tissues and organs of the rat was also similar to that observed for plutonium. The liver and the skeleton were the major sites of deposition. Zirconium citrate administered 15 minutes after injection of americi… more
Date: November 15, 1951
Creator: Langham, Wright H. (Wright Haskell), 1911-1972 & Carter, Robert E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

On the Conductivity of ionized Gas

Description: The conductivity of ionized gases is treated by a method similar to that used by Alfven in his book "Cosmical Electrodynamics". The results differ from those of Alfven. In particular, it is shown that Alfven's conclusion, that whenever the Hall current disappears the conductivity becomes independent of the magnetic field, is not true in general. Moreover, it is not true under just the conditions of interest for the "Pinch Effect". The main conclusions of the present paper are (1) of currents do… more
Date: September 15, 1954
Creator: Konopinski, Emil Jan, 1911-
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Short Period Gamma-Rays from U235 Fission Products

Description: A search for gamma-ray activities with period 1-100 msec from thermal neutron fission of U235 gave negative results. 0.43 +- 0.03 sec was the shortest observed. The period of B12 was found to be 27 +- 3 msec. The cyclotron beam was pulsed to supply 1-10 msec neutron bursts. coincidence scintillation deters were employed.
Date: January 15, 1951
Creator: Brolley, John Edward, 1919- & Livingston, M. Stanley (Milton Stanley)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development for Techniques for Rolling Uranium Metal

Description: Uranium can be rolled from cast metal or forged ingot to sheet satisfactory for cupping, deep drawing, and similar fabrication procedures by a combination of hot breakdown in the neighborhood of 600 deg C and warm finishing at 225 to 325 deg C. Sheet may also be obtained by hot rolling alone and by warm rolling alone. However, it is difficult to secure a uniform, controlled grain size by hot rolling only and warm rolling is time consuming because of the limited reduction per pass obtainable. Th… more
Date: November 15, 1950
Creator: Deutsch, D. E.; Hanks, G. S.; Taub, J. M. & Doll, D. T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Energy Distribution of Fast Neutron Beam

Description: Experimental techniques are described for the spectral measurement of a collimated fast neutron beam. A hydrogen filled cloud chamber, proton recording nuclear plates, and threshold fission foils were used as neutron detectors in the measurements. As an application of the above technique, the energy distribution and absolute flux of the fast neutron beam emerging from port 5W of the Los Alamos fast rector has been measured from 0.1 Mev to 18 Mev. The result show a spectral curve possessing a ma… more
Date: February 15, 1951
Creator: Nereson, Norris G., 1918-2007
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Fabrication Procedure For RaLa Source Fuel Rods

Description: A new method to procure RaLa sources was proposed by Group CMR-10, Los Alamos Scientific Laboratory. This method depended upon irradiation of small-diameter U235 wire in the Materials Testing Reactor, Arco, Idaho. A procedure for cladding and sealing U235 wire in stainless steel tubing, by drawing, plugging the tube ends, and welding, was developed, tested, and proved to be satisfactory.
Date: February 15, 1956
Creator: Hockett, J. E.; Duncan, J. D.; Doll, D. T. & Taub, J. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen