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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
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
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
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
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
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
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
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
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
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
General Reactor-Engineering Research Quarterly Progress Report [for] Period Ending August 31, 1950
Technical report describing results on work which cannot be ascribed to one reactor program. Outlines the results of miscellaneous corrosion testing, the development of new shielding materials, the testing of irradiated plastics, and general heat transfer investigation. [From Preface]
Date:
November 13, 1950
Creator:
Lyon, R. N.
Object Type:
Report
System:
The UNT Digital Library
Homogeneous Reactor Experiment Quarterly Progress Report [for] Period Ending August 31, 1950
Technical report containing the detailed design of the equipment within the reactor shield, reviewed in 1950. Contains various summaries on engineering design and development, reactor physics, chemical studies, and corrosion.
Date:
October 24, 1950
Creator:
Winters, C. E.; Gall, W. R.; Graham, C. B.; Quarles, L. R.; Stein, J. M.; Clewett, G. H. et al.
Object Type:
Report
System:
The UNT Digital Library
A Method for Evaluation of Multiple Scattering Effects in Charged Particle Experiments
Formulas, tables, graphs reviewing the multiple scattering theory of E. J. Williams.
Date:
December 1, 1950
Creator:
Dickinson, W. C. & Dodder, D. C.
Object Type:
Report
System:
The UNT Digital Library
The Effect of X Irradiation in Oxygen and in Hydrogen at Normal and Positive Pressures on Chromosome Aberration Frequency in Tradescantia Microspores
Effect of x irradiation in oxygen and in hydrogen on chromosome aberration frequency in tradescantia microspores.
Date:
September 15, 1950
Creator:
Giles, Norman H., Jr. & Beatty, Alvin V.
Object Type:
Report
System:
The UNT Digital Library
Fast Neutron Data
A report concerning fast neutrons including theory and compiled data.
Date:
January 25, 1950
Creator:
Feshbach, H.
Object Type:
Report
System:
The UNT Digital Library
Aluminum Titanate as a Ceramic Material
A report on using aluminum titanate as a ceramic materiel.
Date:
November 20, 1950
Creator:
Koch, W. J. & Harman, C. G.
Object Type:
Report
System:
The UNT Digital Library
The Relative Thermal Conductivities of Liquid Lithium, Sodium, and Eutectic NaK, and the Specific Heat of Liquid Lithium
Report discussing the relative thermal conductivities of liquid lithium, sodium, and eutectic NaK, and the specific heat of liquid lithium, as well as the methods and materials used to determine this information.
Date:
April 21, 1950
Creator:
Yaggee, F. L. & Untermyer, Samuel, 1912-
Object Type:
Report
System:
The UNT Digital Library
The Aircraft Nuclear Propulsion Project Quarterly Progress Report for Period Ending August 31, 1950
Technical report outlining various experiments that took place in the Oak Ridge Area Critical Mass Laboratory until August 31, 1950. Experiments took place in categories of critical experiments, experimental engineering, heat transfer, radiation damage, nuclear measurements, reactor physics, ARE reactor design, circulating fuel reactors, and circulating moderator reactors. [From Summary]
Date:
December 4, 1950
Creator:
Ellis, C. B. & Thompson, W. E.
Object Type:
Report
System:
The UNT Digital Library
Investigation of the radioactive minerals in the black sands of the Del Monte glass sand deposits, Pacific Grove, California
Discussing an investigation made of the radioactive materials in the Black Sands of the Del Monte Glass Sand Deposits, in Pacific Grove, California
Date:
July 1950
Creator:
Towle, Charles C.
Object Type:
Report
System:
The UNT Digital Library
The Counting Efficiency of Counter Tubes with Aluminum, Copper and Gold Cathodes for X-Rays in the Range 5 Kev to 60 Kev
The author's measurement using counting tubes were performed with an X-ray beam, produced by an X-ray tube. The X-ray beam impinges on only a very small part of the counting tube. In this work the counting efficiency of counting tubes with A1-Cu- and Au-cathodes is determined for X-radiation in the range 5 Kev to 60 Kev.
Date:
1950
Creator:
Moses, Alfred J. & Saurer, Hans
Object Type:
Report
System:
The UNT Digital Library