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The Scattering of 31.8 Mev Protons by Protons Using Proportional Counter Detectors
The basic experiment consists of causing a beam of protons to impinge upon an accumulation of relatively stationary protons (hydrogen gas) and to measure the number of protons scattered as a function of the scattering angle. A description of the arrangement and alignment of equipment with the 32-Mev beam of the Berkeley linear accelerator is included. The data have been analyzed statistically and results have been indicated.
Date:
1950
Creator:
Johnston, Lawrence Harding
Object Type:
Report
System:
The UNT Digital Library
Production of Pi-Mesons in Lead by High Energy Proton Bombardment
Our knowledge of the properties of mesons and their interactions with nuclei has come from two sources. Studies of cosmic ray phenomena provided the earliest information. The discovery that mesons may be produced artificially by bombardment of nuclei with radiations from high energy accelerators has, on the other hand, made it feasible to undertake a wide variety of investigations under more controlled conditions than is possible in cosmic ray experiments. In such experiments mesons have been produced by high-energy protons, alpha-particles and neutrons.
Date:
January 10, 1950
Creator:
Weissbluth, Mitchel
Object Type:
Report
System:
The UNT Digital Library
Studies in Beta and Gamma Ray Spectroscopy
The study of artificial radioactive isotopes is at the present time one of the most important topics in nuclear research. It involves the establishment of a detailed term scheme for the disintegration in question. Not only are the energies of the components of the different beta and gamma radiations of interest, but also their intensities. These data give information concerning the probabilities of transitions between the different nuclear energy levels. From them it is possible to draw conclusions regarding the mechanism of the disintegration and to correlate the spina and parities of the levels.
Date:
January 26, 1950
Creator:
Hayward, Raymond Webster, Jr.
Object Type:
Report
System:
The UNT Digital Library
Alkyl Phosphoric Acids as Extraction Agents for Uranium
The recent interest in tributyl phosphate as an extracting solvent for uranium indicated that consideration of n-butyl phosphoric acid for this application might be of interest if some way could be devised to overcome the manipulation and miscibility difficulties. It was found that if the material was placed in any one of a number of carrier solvents, it had a remarkably strong extractive effect on uranyl ion out of acid solutions without a salting agent present.
Date:
January 27, 1950
Creator:
Stewart, D. C., (Donald Charles), 1912-1996
Object Type:
Report
System:
The UNT Digital Library
Physics Division Quarterly Report: November and December, 1949 and January, 1950
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:
February 7, 1950
Creator:
Lawrence Radiation Laboratory
Object Type:
Report
System:
The UNT Digital Library
The Higher Fluorides of Plutonium
A systematic set of thermodynamic data for most of the known compounds of plutonium is presented. From earlier data present, it is now possible to extend the tabulation of data for the compounds of plutonium to include PuF(4), PuF(5), and PuF(6).
Date:
March 20, 1950
Creator:
Brewer, Leo, 1919-2005; Bromley, LeRoy A.; Gilles, Paul W. & Lofgren, Norman L.
Object Type:
Report
System:
The UNT Digital Library
Summary of the Research Progress Meeting of March 9, 1950
The design of the present time of light mass spectrograph is similar to that of the isotron devised some time ago for isotope separation. The spectrograph will employ the time of flight principle only for the isotopic analysis of small samples.
Date:
March 23, 1950
Creator:
Kramer, Henry P.
Object Type:
Report
System:
The UNT Digital Library
The Use of Laboratory High Frequency Induction Furnaces
Equations are derived for the rates of heating of objects in induction furnaces and for the maximum temperatures attainable. The equations are primarily useful in designing conducting crucibles, shells, and cylinders so as to increase the power input and decrease heat losses. A very brief treatment is given of the factors which influence the current in the induction coil. The performances of various induction furnaces are compared.
Date:
April 3, 1950
Creator:
Brewer, Leo, 1919-2005
Object Type:
Report
System:
The UNT Digital Library
Radioactive Isotopes of Bismuth
Five isotopes of bismuth occur in nature. Using particle accelerators providing helium ions up to 40 Mev in energy and deuterons up to 20 Mev in energy, it was possible to produce and identify two artificial radioactive isotopes. With the advent of the 184-inch Berkeley syncho-cyclotron and its hundreds of Mev energies, it was possible to form highly neutron-deficient bismuth isotopes extending more than ten mass units below stable Bi(209).
Date:
April 6, 1950
Creator:
Neumann, H. M.
Object Type:
Report
System:
The UNT Digital Library
Present Status of the Bevatron R. F. System
The general method of controlling the radio frequency for the full scale Bevatron will be the same as that used on the 1/4 scale machine. The details of course will be modified to meet the requirements of greater range, higher output voltage and closer tracking tolerances. In addition, there is the added complication introduced by the current ripple.
Date:
April 26, 1950
Creator:
Riedel, J.
Object Type:
Report
System:
The UNT Digital Library
Chemistry Division Quarterly Report: March, April and May, 1950
A quarterly summary of reports that have been published on research being conducted at the University of California Radiation Laboratory
Date:
June 30, 1950
Creator:
University of California. Radiation Laboratory.
Object Type:
Report
System:
The UNT Digital Library
Studies of the Metabolism of Certain Fission Products and Plutonium
A short survey of some of the metabolic relationships of the elements, cerium, colurbium, plutonium, strontium, yttrium, and zirconium is presented. While the results of internally deposited radium have not been investigated in these experiments, they have been extensively studies by others. Because so much is known of its biological effects, it has been included in this historical survey.
Date:
August 7, 1950
Creator:
Kawin, Bergane; Copp, D. H. & Hamilton, J. G.
Object Type:
Report
System:
The UNT Digital Library
A Note on the Mechanism of the Formation of Alpha-Acylamino Ketones from Amino Acids
The reaction of alanine-1-C14 and phenylalanine-1-C14 with acetic anhydride in the presence of pyridine has been studied and the carboxyl group of the amino acid has been shown to be the exclusive source of carbon dioxide involved.
Date:
August 23, 1950
Creator:
Fry, Arthur & Rapoport, Henry
Object Type:
Report
System:
The UNT Digital Library
The Photoproduction of Mesons from Hydrogen
In an effort to gain information on the nature of the photon-meson and photon-nucleon interaction, a study of the artificial production of mesons by photons has been made at the Berkeley synchrotron. The major effort of this research was concentrated on a measurement of the energy and angular distribution of u+-mesons produced when the photons strike a target of liquid hydrogen. Detection of the mesons is accomplished electronically by the technique of delayed coincidence.
Date:
August 24, 1950
Creator:
Bishop, Amasa Stone
Object Type:
Report
System:
The UNT Digital Library
Evaluation of the Pentaether and Chelate Processes for the Chemical Separation of Plutonium and Uranium
Research at the University of California Radiation Laboratory has been directed toward the development of processes designed to recover plutonium and uranium from neutron-irradiated uranium. This report has been prepared in answer to requests for information by interested workers in the Atomic Energy programs. The material discussed herein represents the efforts of a sizable research group over several years, and summarizes both the current status of the investigation and the future program now contemplated.
Date:
September 18, 1950
Creator:
Hicks, T. E. & Crandall, Howard William, 1921-1990
Object Type:
Report
System:
The UNT Digital Library
Chemistry Division Quarterly Report: June, July and August, 1950
Quarterly progress report on various research projects conducted at the University of California Radiation Laboratory.
Date:
September 25, 1950
Creator:
Lawrence Berkeley National Laboratory
Object Type:
Report
System:
The UNT Digital Library
High Energy Excitation Functions in the Heavy Region
The electrostatically deflected beam of the 184-inch cyclotron has been used with the stacked foil and absorber technique to determine the excitation functions. The data are presented graphically and discussed individually for each of the reactions. The results are discussed in terms of compound nucleus formation, transparency effects, and other factors in order to arrive at a qualitative picture for the mechanism of high energy nuclear reactions with heavy nuclei.
Date:
September 26, 1950
Creator:
Meinke, W. W.; Wick, G. C. & Seaborg, G. T.
Object Type:
Report
System:
The UNT Digital Library
Neutron Yield in Uranium vs. Energy of Deuterons and Protons
The purpose of this note is to recalculate the semi-empirical curve of neutron yield vs. deuteron energy originally obtained by H. York in order to predict, using it and the best available data, what yields may be expected for deuterons on uranium in the extrapolated energy region.
Date:
October 11, 1950
Creator:
Brown, H.
Object Type:
Report
System:
The UNT Digital Library
Multiplying Lattices
The use of thermally fissionable material in the lattice adds a distributed source of fast neutrons which must be considered in evaluating the problem.
Date:
October 18, 1950
Creator:
Brown, H.
Object Type:
Report
System:
The UNT Digital Library
Lawrence Radiation Laboratory Medical and Health Physics Quarterly Report: July - September 1950
The following quarterly report covers the period of July through September of 1950, split into three reports discussing the metabolic properties of plutonium and allied materials, biological studies of radiation effects, and health chemistry and physics.
Date:
November 8, 1950
Creator:
Hamilton, J. G.; Lawrence, J. H. & Garden, N.
Object Type:
Report
System:
The UNT Digital Library
Thermal Conductivity of Metal Interfaces
The coefficients of thermal conductivity of aluminum-bismuth metal-to-metal bonds, and of aluminum and bismuth surfaces in contact under pressure, were measured.
Date:
November 30, 1950
Creator:
Heckman, R. A.
Object Type:
Report
System:
The UNT Digital Library
Ozone and Nitrogen Oxide Production by Irradiation of Air
In regard to the production of ozone and various nitrogen oxides in air by action of x-rays or gamma rays, thre seems to be no direct experimental data which can be used. There is some data on the action of alpha particles on air and some on the action of cathode rays.
Date:
December 21, 1950
Creator:
Newton, A. S.
Object Type:
Report
System:
The UNT Digital Library
The Chelate Process, IV. Process Flow Involving o-Dichlorobenzene as the Solvent for TTA
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.
Object Type:
Report
System:
The UNT Digital Library
The Production of the Light Rare Earths in the Massive Metallic State
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.
Object Type:
Report
System:
The UNT Digital Library