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Theoretical Study of a Source of Intermediate Energy Neutrons
Abstract. An analysis is made of a proposal to obtain neutrons of 15-25 Kev energy by moderating fast neutrons in aluminum and then reflecting off titanium. The fluxes calculated do not significantly exceed those obtainable from a standard antimony-beryllium photoneutron source. Two appendices treat aspects of the transport of neutrons through a slab of finite thickness.
Date:
January 7, 1954
Creator:
Bludman, Sidney A.
Object Type:
Report
System:
The UNT Digital Library
Behavior, a Balanced Network of Chemical Transformations (Biokinetics)
Abstract. While the concept of a biological system as a balanced network of chemical transformations is not a new one, experimental definition of specific systems has been lacking. This paper defines theoretically and experimentally a number of such networks and their behavior and response to some limited environmental changes.
Date:
January 13, 1954
Creator:
Bradley, D.F. & Calvin, M.
Object Type:
Report
System:
The UNT Digital Library
Theory of Alpha Decay of Spheroidal Nuclei
Abstract. Various effects of spheroidal nuclear distortion on the alpha decay process are considered theoretically. Differential equations governing alpha decay in the region beyond the maximum nuclear radius are derived. They consist of ordinary radial Schrodinger equations for alpha decay to various nuclear states with the addition of quadrupole interaction terms coupling the various equations. The significance of wave amplitudes of various angular momentum alpha groups as Fourier components of the total wave function is pointed out, and experimental alpha decay rate data for even-even nuclei are discussed in these terms.
Date:
December 10, 1953
Creator:
Rasmussen, John O., Jr.
Object Type:
Report
System:
The UNT Digital Library
Angular Distribution of 30.6 Mev Protons Elastically Scattered by Be, C, and Al
The motivation for the measurement of the angular distribution of elastic scattering of medium energy protons and neutrons has been clearly presented by others. They have also listed the results obtained prior to their experiments at 31.5 Mev. This is a report on some results obtained with 30.6 Mev protons scattered from Be, C, and Al.
Date:
November 1953
Creator:
Wright, Byron T.
Object Type:
Report
System:
The UNT Digital Library
Medical and Health Physics Quarterly Report July, August, September, 1953
Quarterly report on the metabolic properties of various materials, biological studies of radiation effects, health chemistry, health physics.
Date:
November 27, 1953
Creator:
University of California Radiation Laboratory
Object Type:
Report
System:
The UNT Digital Library
Convergence and Summability of Orthogonal Series
Consider an orthogonal series [formula] where [formula] is an arbitrary orthonormal system for the interval (a, b) and [formula] is a sequence of real numbers. This report is a collection of theorems which give sufficient conditions for the convergence almost everywhere in (a, b) and summability a. e. in (a, b) of the above series.
Date:
October 6, 1953
Creator:
Killeen, John, 1925-
Object Type:
Report
System:
The UNT Digital Library
Pile Neutron Production Field Curves Calculated Using the UCRL Differential Analyzer
A set of 69 pile yield curves for the production of plutonium, americium, and curium isotopes in a neutron flux of 5 x 10<sup>14 cm<sup>-2 sec<sup>-1 is given. The differential analyzer of the University of California Radiation Laboratory was used in obtaining the curves. The curves are given also on log-log plots for comparison.
Date:
October 30, 1953
Creator:
Barrett, R. J.; Killeen, John, 1925-; Rasmussen, J. O. & Thompson, Stanley Gerald, 1912-1976
Object Type:
Report
System:
The UNT Digital Library
The Bevatron 9.9-Mev Proton Linear Accelerator
The Bevatron requires an intense source of high energy protons. The machine should accept monoenergetic protons for a duration of approximately 500 microseconds once every 6 seconds. To satisfy the requirements of small loss due to scattering by the gas in the accelerating chamber, a 9.9-Mev linear accelerator has been built and operated.
Date:
July 1954
Creator:
Cork, Bruce
Object Type:
Report
System:
The UNT Digital Library
Interaction of Heparin Active Factor and Egg-Yolk Lipoprotein
There is an active principle in heparinized plasma that may be studied in vitro with a prescribed lipoprotein-containing medium. To this end the interaction of this active principle or factor was studied with lipoprotein species isolated from egg yolk.
Date:
October 1953
Creator:
Nichols, Alex V.; Rubin, L. & Lindgren, Frank T.
Object Type:
Report
System:
The UNT Digital Library
Meson-Mass Measurements II - On the Measurement of the Masses of Charged Pions
This paper describes the method developed and the results obtained in an extensive program of measurement of the masses of charged pions. Measurements were made of the total ranges in nuclear track emulsion and the momenta (obtained from the curving of the particle trajectory in the magnetic field of the 184-inch cyclotron) of pions and protons of nearly the same velocity.
Date:
February 2, 1954
Creator:
Smith, Frances M.
Object Type:
Report
System:
The UNT Digital Library
Chemistry Division Quarterly Report: June, July, August, 1953
Quarterly updates on nuclear chemistry, bio-organic chemistry, general chemistry, chemical engineering (process chemistry).
Date:
September 30, 1953
Creator:
University of California Radiation Laboratory
Object Type:
Report
System:
The UNT Digital Library
Medical and Health Physics Quarterly Report: May, June, July, 1953. Aerosol Studies.
Our aerosol program employing monkeys has been initiated. A plutonium oxilate solution was introduced into the trachea. Preliminary results of the fecal and urinary determinations appear here.
Date:
September 21, 1953
Creator:
Hamilton, J. G. & Wallace, Patricia
Object Type:
Report
System:
The UNT Digital Library
Medical and Health Physics Quarterly Report: April, May, June, 1953
Progress report on biological studies of radiation effects, metabolic properties of various materials, health chemistry, health physics.
Date:
September 21, 1953
Creator:
University of California Radiation Laboratory
Object Type:
Report
System:
The UNT Digital Library
Orbital Electron Capture in the Heaviest Elements
Certain isotopes in the region of the heaviest elements have been produced by cyclotron and pile bombardment techniques, and their nuclear decay properties have been investigated. The orbital electron capture decay of At210, At211, Np234, Np235, Pu234, Pu237, and Am242m has been studied and decay schemes have been proposed. In addition, the alpha spectra of Po211, At210, and At211 have been observed.
Date:
September 1953
Creator:
Hoff, Richard William
Object Type:
Report
System:
The UNT Digital Library
Passage of Electrons Through Matter
One of the oldest properties of electrons is their emission of x-rays (discrete and continuous spectra) when impinging on matter. Cloud-chamber tracks show light ionization, and considerable multiple scattering, except for fast electrons. Tracks are long and range indefinite.
Date:
September 9, 1953
Creator:
Vaughan, Edward
Object Type:
Report
System:
The UNT Digital Library
The Distributions in Energy and in Number of Electrons and Photons in Cascade: Derived With Energy-Dependent Bremsstrahlung, Materialization, Collision Loss and Multiple Scattering
Diffusion equations for a cascade shower which include an energy cutoff and energy parameters for each particle have not previously been studied. In this paper it is found that an inclusion of both permits collision loss to be represented as a discrete process by modifying the differential radiation cross section.
Date:
September 17, 1953
Creator:
Rankin, Bayard
Object Type:
Report
System:
The UNT Digital Library
A Criterion For Vacuum Sparking Designed to Include Both R. F. and D. C.
An empirical relation is presented which represents a boundary between no vacuum sparking and possible vacuum sparking. Metal electrodes and r.f. or d.c. voltages are used. The criterion fits several orders of surface gradient, voltage, gap, and frequency. Current due to field emission is considered necessary for sparking but in addition, energetic particles are required to initiate a cascade process which increases the field emission currents to the point of sparking. An elementary cascade process is outlined, but the data upon which it is based is not fully stated.
Date:
September 4, 1953
Creator:
Kilpatrick, W. D.
Object Type:
Report
System:
The UNT Digital Library
The Production of 320 Mev Deuterons By He3 Stripping
The purpose of this report is to describe a method of obtaining deuterons from the 184-inch cyclotron of higher energy than can be achieved from direct acceleration.
Date:
August 31, 1953
Creator:
Ise, John, Jr.; Pyle, Robert V.; Hicks, Donald A. & Main, Robert M.
Object Type:
Report
System:
The UNT Digital Library
MTA Quarterly Progress Report: March, April, May, 1953
Progress report on programs in target research and in accelerator research.
Date:
August 28, 1953
Creator:
University of California Radiation Laboratory
Object Type:
Report
System:
The UNT Digital Library
Dependence of Positive Pion Production Cross Sections on Atomic Number at Low Energies
A preliminary study of positive pion production from proton-nucleus collisions revealed that positive pion production cross sections agree more favorably with a Z 2/3 variation than with a variation proportional to the atomic number. A similar study on negative pion production has shown that negative pion yields from proton-nucleus collisions tend to vary in proportion to the number of neutrons in the nucleus. As a result an experiment was performed to investigate if there is a significant change in positive pion production with changing atomic number at two lower pion energies.
Date:
September 8, 1953
Creator:
Sagane, Ryokichi, 1905-1969 & Dudziak, Walter F.
Object Type:
Report
System:
The UNT Digital Library
The Dependence of Negative Pion Production on Neutron Number
The existing data on positive pion production resulting from the interaction of 340 Mev protons with complex nuclei indicate that the production cross-sections agree more closely with a 2/3 variation than with a variation proportional to z. A preliminary survey of negative pion production at two pion energies has been made for Be, C, Al, Cu, Ag and Po, using the externally deflected 340 Mev synchro-cyclotron proton beam.
Date:
unknown
Creator:
Dudziak, Walter F. & Sagane, Ryokichi, 1905-1969
Object Type:
Report
System:
The UNT Digital Library
Separation of Iron and Cobalt on Synthetic Resin
Recent studies on the separation of cobalt and nickel and on the behavior of iron in hydrochloric acid on Dowex-1 resin in relation to the selective adsorption of chloride complexes of these elements have suggested the use of resin for the separation of iron and cobalt.
Date:
August 5, 1953
Creator:
Helwig, Harold L.; Ashikawa, James K.; Clokie, Hugh & Smith, Elmer R.
Object Type:
Report
System:
The UNT Digital Library
Dynamics of Stagewise Extraction Columns
A calculation method has been developed in order to correlate continuous-flow extraction results in mixer-settlers with rate data for batch experiments. This correlation utilizes dynamic extraction coefficients (E's) that are calculated from the rate data and the equilibrium extraction coefficients. The dynamic coefficients may then be used in stage-by-stage calculations, or their average values used in equations derived herein from the overall performance of center-fed columns.
Date:
August 10, 1953
Creator:
Hicks, T. E.; Rubin, B. & Vermeulen, Theodore
Object Type:
Report
System:
The UNT Digital Library
The Effect of Highly Ionizing Radiations on Cell Survival: a Study of the Relative Biological Effect on Yeast Cells
An apparatus is described that permits the use of highly ionizing radiations of the Berkeley 60-inch Cyclotron for radiobiological experimentation (ie., deuterons, alpha particles and carbon nuclei).
Date:
April 1954
Creator:
Sayeg, J. A. (Joseph A.)
Object Type:
Report
System:
The UNT Digital Library