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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.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Proposed R.F. Buncher for A-12

Description: A buncher and pre-accelerator for A-12 is described that has 360 degree acceptance and could handle a current of one ampere from a low voltage source.
Date: June 25, 1952
Creator: Colgate, S. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Convergence and Summability of Orthogonal Series

Description: 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-
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Neutron Dosimetry in and Around Human Phantoms By Use of Nuclear Track Emulsion

Description: The validity of the nuclear track emulsion technique for fast-neutron dosimetry is examined in the exposure of a human phantom to PuBe neutrons, Semiautomatic track scanning and high-speed data analysis obviate the major disadvantages of emulsion dosimetry, and allow the absolute differential proton track energy spectrum at various locations in the phantom to be obtained without a serious cost in time. From this are calculated the total absorbed local tissue dose due to proton recoils and the l… more
Date: April 1962
Creator: Akagi, Hiroaki & Lehman, Richard L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Neutron Dosimetry in and Around Human Phantoms By Use of Nuclear Track Emulsion

Description: The power of nuclear track research emulsion as a fast neutron dosimeter is examined in the exposure of a human phantom to PuBe neutrons. Semiautomatic track scanning and high-speed data analysis obviate the major disadvantages of this dosimeter, and allow the following basic information to be obtained without a serious cost in time: the rulative proton recoil energy spectrum, the absolute differential proton track den sity spectrum, and the average proton recoil energy at various locations in … more
Date: November 30, 1961
Creator: Akagi, Hiroaki & Lehman, Richard L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Angular Distribution of 30.6 Mev Protons Elastically Scattered by Be, C, and Al

Description: 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.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Hydromagnetic Ionizing Waves

Description: One of the techniques by which highly ionized plasmas can be generated in the laboratory makes use of strong, electromagnetically driven shock waves propagating into a cold gas. In this paper the phenomenon is analyzed as a one-dimensional single-fluid hydromagnetic problem, neglecting dissipation behind the wave.
Date: December 26, 1961
Creator: Kunkel, Wulf B. & Gross, Robert A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Evidence For a T = 0 Resonance in the Z[ ] System

Description: In previous letters we have reported a Av resonance, called Y*1, observed through the study of the interaction of 1.15-Bev/c K* mesons in hydrogen in the Lawrence Radiation Laboratory 15-in. bubble chamber. We now wish to report the results of the study of the three reactions [formula](1), [formula](2) and [formula](3).
Date: April 28, 1961
Creator: Alston, Margaret H.; Alvarez, Luis W., 1911-1988; Eberhard, Phillippe; Good, Myron L.; Graziano, William; Ticho, Harold K., 1921-2020 et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Interaction of Heparin Active Factor and Egg-Yolk Lipoprotein

Description: 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.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Meson-Mass Measurements II - On the Measurement of the Masses of Charged Pions

Description: 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.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Bevatron 9.9-Mev Proton Linear Accelerator

Description: 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
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Pile Neutron Production Field Curves Calculated Using the UCRL Differential Analyzer

Description: 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
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Dependence of Positive Pion Production Cross Sections on Atomic Number at Low Energies

Description: 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 chan… more
Date: September 8, 1953
Creator: Sagane, Ryokichi, 1905-1969 & Dudziak, Walter F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Criterion For Vacuum Sparking Designed to Include Both R. F. and D. C.

Description: 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 pro… more
Date: September 4, 1953
Creator: Kilpatrick, W. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Distributions in Energy and in Number of Electrons and Photons in Cascade: Derived With Energy-Dependent Bremsstrahlung, Materialization, Collision Loss and Multiple Scattering

Description: 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
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Orbital Electron Capture in the Heaviest Elements

Description: 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
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Passage of Electrons Through Matter

Description: 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
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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