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Accelerator Beam Pulsing System With Extremely Wide Range of Pulse Lengths and Pulse Repetition Rates (open access)

Accelerator Beam Pulsing System With Extremely Wide Range of Pulse Lengths and Pulse Repetition Rates

The following document describes the usage and results of sending pulsed beams of electrically charged particles with electrically wide range of pulse lengths and pulse repetition rates.
Date: June 28, 1960
Creator: Aaland, Kristian
Object Type: Report
System: The UNT Digital Library
The Theory and Operation of Shock-Load Ferroelectric Transducers (open access)

The Theory and Operation of Shock-Load Ferroelectric Transducers

A report discussing "an explosive ferroelectric power supply and the experimental approach followed in determining its operating characteristics."
Date: November 1959
Creator: Abegg, M. T.; Kuenning, R. W.; Phelps, P. L., Jr. & Graham, H. M.
Object Type: Report
System: The UNT Digital Library
The Sideband Technique In A Variable Frequency NMR Spectrometer (open access)

The Sideband Technique In A Variable Frequency NMR Spectrometer

The purpose of this Note is to point out the advantages of the sideband technique over the derivative method in wideline NMR spectroscopy. In the sideband technique the absorption spectrum is recorded directly and the modulation amplitude is no longer a determining factor in the resolution.
Date: August 1961
Creator: Acrivos, J. V., 1928-
Object Type: Report
System: The UNT Digital Library
A Solution of the Distributional Error Problem in Cytophotometry (open access)

A Solution of the Distributional Error Problem in Cytophotometry

Use of that portion of the characteristic curve of photographic film in which transmission is linear with log exposure eliminates the distributional error and thus makes possible the assessment of total mass of an inhomogeneously distributed cell consistent without scanning or measuring the cell's projected area. Measurement consists of obtaining the difference in output of a photocell receiving the total light transmitted by a photomicrograph of the cell, and a photomicrograph of the microscope field illumination against which the cell was photographed. A method of making such measurements is given, and its basis is described.
Date: December 19, 1961
Creator: Adams, Lawrence R. & Sondhaus, Charles A.
Object Type: Report
System: The UNT Digital Library
Project Cowboy : Final Report : Seismic Decoupling for Explosions in Spherical Cavities (open access)

Project Cowboy : Final Report : Seismic Decoupling for Explosions in Spherical Cavities

A series paired explosions in a salt mine near Winnfield, Louisiana, has been conducted to test a theory by A.L. Latter concerning seismic decoupling by underground cavities. The theory predicted a decoupling of 132 Free-field and surface measurements from an explosion in either a 6-ft- or a 15-ft-radius spherical cavity were compared with similar measurements from a completely tamped explosion of equal size. Shot sizes were from 20 pounds up to a ton. Surface measurements were made out to 100 km and covered the frequency range from 0.05 to 100 cps. The experiments confirmed that decoupling does occur. For explosions that produce an average cavity pressure up to one-fifth and possible more of the lithostatic overburden pressure, seismic waves were decoupled by the 100, i.e., two order of magnitude. Even for explosions producing an average cavity pressure of six times the lithostatic overburden pressure, the seismic waves were decoupled by 20 -- more than a full order of magnitude. Minimum decoupling factors as a function of frequency are presented.
Date: August 1960
Creator: Adams, William M. & Allen, DeWitt C.
Object Type: Report
System: The UNT Digital Library
Seismic Decoupling for Explosions in Spherical Cavities (open access)

Seismic Decoupling for Explosions in Spherical Cavities

Abstract. A series of paired explosions in a salt mine near Winnfield, Louisiana, has been conducted to test a theory by Dr. A. L. Latter concerning seismic decoupling by underground cavities. The theory predicted a decoupling of about 100. Free-field and surface measurements from an explosion in either a 6-ft- or a 15-ft-radius spherical cavity were compared with similar measurements from a completely tamped explosion. Shot sixes were from a 10 lb up to a few tons. Surface measurements were made out to 100 km and covered the frequency range from 0.05 to 100 cpa. The experiment confirmed that decoupling does occur. The actual decoupling factor as a function of frequency is presented and compared with the Latter theory.
Date: September 30, 1960
Creator: Adams, William M. & Carder, Dean S.
Object Type: Report
System: The UNT Digital Library
Calculation of k-o in a Uranium-Graphite Lattice (open access)

Calculation of k-o in a Uranium-Graphite Lattice

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.
Object Type: Report
System: The UNT Digital Library
Energy Spectrum of Deuterons Stripped From He3 and the Resultant Neutron Yield (open access)

Energy Spectrum of Deuterons Stripped From He3 and the Resultant Neutron Yield

The attenuation curve of the deuterons stripped from He3 has been measured with a Faraday cup. The corresponding curve at 190 Mev was fit by assuming that the deuterons were monoenergetic, with three processes taking place.
Date: March 10, 1953
Creator: Adelman, F. L.
Object Type: Report
System: The UNT Digital Library
Three Group Equations for a Multiplying Medium (open access)

Three Group Equations for a Multiplying Medium

In the past it was felt that the easiest way to treat a three group equation for a MTA lattice was to solve it without certain terms. This iterative procedure converged rapidly for a medium with depleted uranium fuel, and in fact, a second iteration was not needed.
Date: June 11, 1952
Creator: Adelman, F. L.
Object Type: Report
System: The UNT Digital Library
Diffusion Equation Green's Functions for Box Problems (open access)

Diffusion Equation Green's Functions for Box Problems

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.
Object Type: Report
System: The UNT Digital Library
Energy Spectrum of Neutrons from 3-10 MEV (open access)

Energy Spectrum of Neutrons from 3-10 MEV

The energy distributions of neutrons in the 3-10 Mev energy range resulting from the bombardment of thin U targets are being investigated by the measurement of proton recoils in photographic plates.
Date: February 11, 1952
Creator: Adelman, Frank
Object Type: Report
System: The UNT Digital Library
On Neutron Evaporation From Excited Nuclei (open access)

On Neutron Evaporation From Excited Nuclei

At high excitation energies, competition of proton and c-particle emission with neutron emission becomes important. For low excitation, the competition between Y-emission, neutron emission, and fission should be taken into account. To aid in the evaluation of this competition an experiment has been performed to measure the number and energy spectrum of the protons and c-particles emitted in the high energy bombardment of uranium with protons, deuterons, and c-particles.
Date: June 18, 1953
Creator: Adelman, Frank L.
Object Type: Report
System: The UNT Digital Library
Neutron Dosimetry in and Around Human Phantoms By Use of Nuclear Track Emulsion (open access)

Neutron Dosimetry in and Around Human Phantoms By Use of Nuclear Track Emulsion

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 local thermal neutron intensity during irradiation.
Date: April 1962
Creator: Akagi, Hiroaki & Lehman, Richard L.
Object Type: Report
System: The UNT Digital Library
Neutron Dosimetry in and Around Human Phantoms By Use of Nuclear Track Emulsion (open access)

Neutron Dosimetry in and Around Human Phantoms By Use of Nuclear Track Emulsion

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 the phantom. From this are calculated the total absorbed local tissue doze due is proton recoils, the local thermal neutron intensity, and that portion of the tissue doze due to thermal [formula] tracks.
Date: November 30, 1961
Creator: Akagi, Hiroaki & Lehman, Richard L.
Object Type: Report
System: The UNT Digital Library
State of Matter at High Pressure (open access)

State of Matter at High Pressure

Abstract. The region where exact thermodynamic description of the state of matter at high pressure and high temperature is possible is located. In the remaining region various approximate theories and empirical relations are discussed. These considerations are applied to hydrogen to locate the density and pressure at which the diatomic bond collapses. Also the approximate conditions are determined at which no bound electron states exist.
Date: March 31, 1960
Creator: Alder, Berni J.
Object Type: Report
System: The UNT Digital Library
The Nuclear Spin Of Neodymium-141 (open access)

The Nuclear Spin Of Neodymium-141

The spin of neodymium-141 was measured by the method of atomic beams and found to be 3/2. A lower limit placed on the hyperfine separation of the states with total angular momentum [formula] by second-order perturbation theory shows [formula]. A prerequisite for the determination of the nuclear spin from hyperfine-structure measurements is the knowledge of the electronic structure. The ground-state configuration of neodymium is known and the value is used throughout this work.
Date: July 3, 1961
Creator: Alpert, Seymour S.; Budick, Burton; Lipworth, Edgar & Marrus, Richard
Object Type: Report
System: The UNT Digital Library
Evidence For a T = 0 Resonance in the Z[ ] System (open access)

Evidence For a T = 0 Resonance in the Z[ ] System

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.
Object Type: Report
System: The UNT Digital Library
The [Sigma/Alpha] Branching Ratio Of [Y*1] (open access)

The [Sigma/Alpha] Branching Ratio Of [Y*1]

Recently a T=1 resonance in the [Alpha w] system called [Y*1] has been observed with a mass of 1385 Mev. Two types of resonances have been predicted that might relate this observation to other elementary-particle interactions: (1) P 3/2 resonances in the Alpha w and Sigma w systems predicted by global symmetry corresponding to the (3/2, 3/2) resonance of the wN system, (2) a spin-1/2 Y-w resonance resulting from a bound state in the KN system. The position and width of the observed [Y*1] resonance agree with both theories but since the spin and parity have not yet been determined, it is impossible at present to distinguish between the two theoretical interpretations.
Date: April 25, 1961
Creator: Alston, Margaret H.; Alvarez, Luis W., 1911-1988; Eberhard, Phillippe; Good, Myron L.; Graziano, William; Ticho, Harold K., 1921-2020 et al.
Object Type: Report
System: The UNT Digital Library
The Interactions Of Strange Particles (open access)

The Interactions Of Strange Particles

This report is a corrected copy of the authors "rapporteur talk" at the 1959 Kiev Conference on High Energy Physics. It contains data on the rapporteur system and on interactions of strange particles with protons and neutrons, using data from bubble chambers, counters, and emulsions.
Date: August 11, 1960
Creator: Alvarez, Luis W.
Object Type: Report
System: The UNT Digital Library
LRL-Nevada Drill Hole Survey Technique (open access)

LRL-Nevada Drill Hole Survey Technique

The demands of the scientific programs of the Lawrence Radiation Laboratory at the Nevada Test Site have necessitated the development of special drill hole survey techniques. These techniques, in general, have made possible the attainment of greater survey accuracies than are ordinarily obtained by the drilling industry in the course of normal survey work. For drill holes requiring a moderately high degree of location accuracy, standard survey equipment, manufactured by Eastman Oil Well Survey Company was adapted by LRL to meet this need. Where an extremely high degree of survey accuracy and control of drilling effort is necessary, such as in the drilling and survey of line-of-sight holes, special optical equipment was developed. The modifications of equipment, refinements in procedures, and special techniques necessary to adapt this equipment to meet the more demanding accuracy requirements of scientific programs are discussed. The overall techniques of survey, equipment used, and the accuracies obtained together with results of completed surveys showing a comparison with standard land survey methods are also discussed and illustrated in some detail.
Date: December 1960
Creator: Anderson, Arthur L.; Skousen, Lester P. & Bennett, Walter P.
Object Type: Report
System: The UNT Digital Library
Photoproduction Of Neutral Pions As A Function Of Mass Number (open access)

Photoproduction Of Neutral Pions As A Function Of Mass Number

The relative yield of neutral photopions from various elements was determined as a function of the quantum limit energy of the Berkeley synchrotron. Single decay photons from neutral pions were observed at 45, 90, and 135 deg to the incident bremsstrahlung in the laboratory system. Mean free paths for neutral pions in nuclear matter were obtained, an optical model prediction of the photopion yields based upon pion-nucleus scattering data was confirmed, and the presence of coherent pion production in the forward direction was detected.
Date: November 4, 1960
Creator: Anderson, John D.; Goodwin, Lester K. & Kenney, Robert W.
Object Type: Report
System: The UNT Digital Library
Production of Neutral Photopions as a Function of Atomic Weight (open access)

Production of Neutral Photopions as a Function of Atomic Weight

Thesis discussing the relative yield of neutral pions from elements in a reaction "as a function of the quantum-limit energy (the maximum energy of the quanta in the bremsstrahlung beam) of the Berkeley synchrotron." Interpretation of the results leads to values for the mean free path for absorption of the neutral pions in nuclear matter.
Date: May 28, 1956
Creator: Anderson, John David
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Linear Pinch Work in Berkeley (open access)

Linear Pinch Work in Berkeley

The following report discusses the data of the Z-field pick-up loop, an effective diagnostic tool introduced to help experiments with the linear pinch.
Date: July 1956
Creator: Anderson, O. A. & Baker, W. R.
Object Type: Report
System: The UNT Digital Library
The Homopolar Device (open access)

The Homopolar Device

This paper is intended as a preliminary report on the Homopolar configuration (axial magnetic field with radial electric field), which is the rotating configuration most thoroughly studied thus far. The analysis presented in this paper applies principally to the "ideal" Homopolar, that is, the configuration free from electrode-sheath drops and other disturbing but remediable phenomena. Design considerations for various interesting plasma appliances are derived and documented with preliminary experimental results. The experiments have been carried out under high-density (pinch-type) conditions which favor the creation of a totally rotating plasma and the actual physical measurement of the characteristics of such a plasma. When larger models of the Homopolar are built, it will be possible to use the present pinch-type technique of plasma formation at much lower density, just as has been done in the case of the toroidal stabilized pinch.
Date: January 1958
Creator: Anderson, O. A.; Baker, W. R.; Bratenahl, A.; Furth, H. P.; Ise, J., Jr.; Kunkel, Wulf B. et al.
Object Type: Report
System: The UNT Digital Library