32 Matching Results

Search Results

Results: 1 - 24 next
open access

Recent Total Neutron Yield Measurements

Description: The report summarizes results obtained since September, 1951, by total neutron yield experiments using 190 Mev deuterons and the MnSo4 tank method (UCRL-1375 and UCRL-1480). A new method of beam monitoring has resulted in establishing firmly the absolute yield for solid uranium and thorium primary targets backed by a solid uranium secondary. The beam monitoring was done by using a primary target built into a faraday cup. This method circumvents errors caused by recombination in the ionizatio… more
Date: January 21, 1951
Creator: Crandall, W. & Millburn, G.
Partner: UNT Libraries Government Documents Department
open access

Summary of Research on Experimental Refractory Bodies of High-Melting Nitrides, Carbides, and Uranium Dioxide

Description: First 31 pages of a quarterly report discussing the progress made on research projects during the period from October 1950 to December 1950. This section of the report discusses progress on studies of the metabolic properties of various elements.
Date: February 27, 1951
Creator: Chiotti, P. & Hamilton, J. G.
Partner: UNT Libraries Government Documents Department
open access

The Production of the Light Rare Earths in the Massive Metallic State

Description: This report discusses experiments that study 15 irradiated rats that were given B80 r at the same rate and used to study the fate of potassium following x-ray.
Date: 1951
Creator: Spedding, F. H.; Wilhelm, Harley A. & Keller, W. H.
Partner: UNT Libraries Government Documents Department
open access

Tests on a High Current R.F. Joint in Vacuum

Description: An R.F. joint tester was designed to determine the relative heating and tendency toward arching at high RF current density (100 amps/linear inch) of a 12 inch diameter circular copper butt joint in vacuum with several types of inserts and at various amounts of axial loading, ranging from a very small contact pressure to one of 1400 pounds per linear inch of joint.
Date: July 25, 1951
Creator: Wharton, Charles B.
Partner: UNT Libraries Government Documents Department
open access

An Ion Exchange Study of Possible Hybridized 5f Bonding in the Actinides

Description: A study was conducted on the elution behavior of curium (III), americium (III), plutonium (III), actinium (III), plutonium (IV), neptunium (IV), uranium (IV), thorium (IV), neptunium (V), plutonium (VI), uranium (VI), lanthanum (III), cerium (III), europium (III), ytterbium (III), ytterium (III), strontium (II), barium (II), radium (II), cesium (I) with 3.2 M, 6.2 M, and 12.2 M HCI solutions from Dower-50 cation exchange resin columns. These elutions show that in high concentrations of hydroch… more
Date: August 28, 1951
Creator: Diamond, R. M.; Street, K., Jr. & Seaborg, Glenn T. (Glenn Theodore), 1912-1999
Partner: UNT Libraries Government Documents Department
open access

Energy and Ionization of Light Particles as a Function of H(P)

Description: Energy values are generally accurate to 5%, except in the low energy region and except for He(3) and He(4) for which a non-relativistic conversion was made.
Date: August 1951
Creator: Johnson, Donald
Partner: UNT Libraries Government Documents Department
open access

300-KV Pulser Transformer and Pulser.

Description: Photographs and working drawings are presented for a small (approximately 4.25 X 7 X 9 inch) 300Kv pulse transformer having double-conical secondaries each with a corona ring at its greatest diameter. The pulser circuit is shown but no text is included.
Date: November 1951
Creator: Heller, R. E.
Partner: UNT Libraries Government Documents Department
open access

Discriminator Calibrator

Description: To calibrate a pulse height discriminator, the amplitude of the calibrating pulse must be known. If the amplitude is known, the discriminator dial may be calibrated in terms of the input signal required to just trip it. This is the purpose for which the Discriminator Calibrator was designed. It produces pulses of variable but known amplitude with a rep. rate variable from 3 pps to 4000 pps. The main use of this unit at the UCRL is in conjunction with scalers at fixed counting locations.
Date: November 27, 1951
Creator: Stripeika, Alex J. & Newton, Gene B.
Partner: UNT Libraries Government Documents Department
open access

Fixation of Carbon Dioxide by Barley Roots

Description: The uptake of carbon dioxide by plant roots preparations has been demonstrated by various authors. In addition to confirming the fact of fixation, I have investigated the effect of a number of factors involved and the compounds in which the absorbed carbon appears, using carbon-14.
Date: November 30, 1951
Creator: Poel, L. W.
Partner: UNT Libraries Government Documents Department
open access

Preliminary Considerations Regarding Stability of MTA Mark I as a Closed-Loop System

Description: The basic scheme under consideration in this research on stability of closed-loop of the Mark I machine is one in which a voltage proportional to the magnitude of the rf fields in the cavity acts to control rectifier voltage output. It is recognized that such is not the only scheme for maximization of output which may be conceived, but only what seems to be a logical and direct way of attaining such an objective.
Date: November 1, 1951
Creator: Waddell, J. F.
Partner: UNT Libraries Government Documents Department
open access

Physics Division Quarterly Report: August, September and October, 1951

Description: Quarterly summary report of studies conducted through the Radiation Laboratory, University of California. Some results reported in the report may be of a preliminary or incomplete nature.
Date: December 12, 1951
Creator: University of California. Radiation Laboratory.
Partner: UNT Libraries Government Documents Department
open access

Diffusion Equation Green's Functions for Box Problems

Description: The use of diffusion theory to attempt to reproduce the chemical data of Hicks and Stevenson for the spatial distribution of neutrons in a solid block of uranium that is bombarded by 190 Mev neutrons is described.
Date: December 27, 1951
Creator: Adelman, F.; Lepore, J. & Rosenblum, M.
Partner: UNT Libraries Government Documents Department
open access

The Chelate Process, IV. Process Flow Involving o-Dichlorobenzene as the Solvent for TTA

Description: Comparative studies of a series of halogenated solvents, as carriers for TTA in the chelate process for plutonium extraction, indicate that ortho-dichlorobenzene most nearly satisfies the requirements that are set forth. A complete process design is presented for use with this solvent, and flow data and equipment capacities are given for dissolver solution and for uranium-free fission product solution as alternate feeds to the process.
Date: January 1951
Creator: Davis, M. W., Jr.; Hicks, T. E. & Vermeulen, T.
Partner: UNT Libraries Government Documents Department
open access

Calculation of k-o in a Uranium-Graphite Lattice

Description: Since the 25 content of the uranium to be used in a MTA multiplying lattice is quite uncertain at present, it is necessary to assume various degrees of depletion in order to estimate the multiplication constant K-o and the production of 49 in an infinite uranium-graphite lattice
Date: February 8, 1951
Creator: Adelman, F.
Partner: UNT Libraries Government Documents Department
open access

III: Two-Group Approximation to Absorbing Lattices

Description: The mathematics of the approximation is developed for the case of a H2O-cooled, graphite-moderated matrix
Date: February 12, 1951
Creator: Brown, Harold
Partner: UNT Libraries Government Documents Department
open access

IV. Production and Heating

Description: Calculations are developed which indicate the Pu production is an infinite lattice
Date: February 13, 1951
Creator: Brown, Harold
Partner: UNT Libraries Government Documents Department
open access

Square Wave Testing of Air Dielectric Coaxial Transmission Line Components

Description: An outline is given for mismatch and delay measurements methods on air dielectric transmission line components, and techniques for square wave testing are outlined. Equipment design of the needed pulsers, attenuation and delay sections, and high speed oscilloscopes is disclosed. The final section of this report is devoted to measurements and how to analyze results
Date: June 1951
Creator: Heller, Robert E.
Partner: UNT Libraries Government Documents Department
open access

V. Multiplying Lattices of the Hollow Type

Description: A two-group approximation of the fission ratios and Pu production in an infinite hollow matrix is developed
Date: February 14, 1951
Creator: Brown, Harold
Partner: UNT Libraries Government Documents Department
open access

RF Field Investigations on the 1/10 Scale Mark I Cavity

Description: A complete investigation was made of the r-f field in the 1/10-scale Materials Testing Accelerator (Mark I) cavity
Date: March 13, 1951
Creator: Dazey, Mitchell; Nielsen, Dale; Robertson, Raymond & Sewell, Duane
Partner: UNT Libraries Government Documents Department
open access

Transient Temperatures in Flat Plates

Description: Calculations presented were done to determine what maximum temperature gradients and stresses would be in typical designs of flat thorium plates, 100 mils thick and coolled on both sides by NaK.
Date: April 6, 1951
Creator: Hanson, Donald N.
Partner: UNT Libraries Government Documents Department
open access

High Energy Proton Spallation--Fission of Uranium

Description: The fission and spallation reactions caused in uranium by bombardment with high energy protons (340 to 350 Mev) were investigated. The reaction products were separated from the target by chemical processes and identified by their radioactive properties. The relative yields of the observed fission products were measured, and the results plotted as a function of mass number. Several of the spallation products were identified and their yields estimated.
Date: May 28, 1951
Creator: Folger, R. L.; Stevenson, P. C. & Seaborg, Glenn T. (Glenn Theodore), 1912-1999
Partner: UNT Libraries Government Documents Department
open access

Gap Splitter Radiofrequency Power Loss

Description: Calculations indicative of the power loss for 75 in.radius gap splitters are given.
Date: April 9, 1951
Creator: Robertson, R. D.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen