Resource Type

Meson Mass Measurements III : The Pi-Mu Mass Ratio and Energy Balance in Pion Decay (open access)

Meson Mass Measurements III : The Pi-Mu Mass Ratio and Energy Balance in Pion Decay

From introduction: "This article constitutes the third of a series of three papers on the "direct" measurements of the meson masses by the "Hp vs. Range" mass ratio method...The study here reported is a logical extension of the pion-proton mass ratio technique."
Date: March 23, 1954
Creator: Birnbaum, Wallace
System: The UNT Digital Library
Preliminary Report on the Ultrasonic Properties of Uranium (open access)

Preliminary Report on the Ultrasonic Properties of Uranium

This report discusses preliminary results acquired from investigations made on the ultrasonic properties of uranium, such as sonic vibrations in the megacycle frequency range.
Date: October 22, 1952
Creator: Worlton, D. C. & Wood, E. C.
System: The UNT Digital Library
Microwave Diagnostic Systems and Techniques for Use in Controlled Fusion Research (open access)

Microwave Diagnostic Systems and Techniques for Use in Controlled Fusion Research

Abstract: "Microwaves have been used for several years at Lawrence Radiation Laboratory to study conditions in the magnetically contained plasmas of controlled fusion research. There are two basic microwave techniques. One gives information on electron density and distribution in the plasma, the other provides data on electron temperature. This paper briefly summarizes the established techniques, discusses engineering requirements and limitations, and describes some further applications of microwaves presently being considered."
Date: June 1960
Creator: Bunn, Harlin L.
System: The UNT Digital Library
Ionization in Crossed Electric and Magnetic Fields (open access)

Ionization in Crossed Electric and Magnetic Fields

Both in magnetohydrodynamic shocks and in accelerated partially ionized gas flow across a magnetic field, space charge separation occurs that establishes very large electric fields in the direction of motion. The width of the current layers associated with the acceleration is never less than the electron Larmor radius with no collisions and is broadened by electron collisions to a width solely determined by the effective resistivity. The electrons gain an energy regardless of collisions equal to the electric potential difference across the layer. This potential corresponds to the change in kinetic energy of mass motion per ion. For slightly ionized gases, the additional stress of neutral ion collisions within the layer can make the electric potential and hence gain in electron energy very large for only modest changes in mass velocity. Hence ionization may occur when the change in kinetic energy of the ions is small compared to the ionization potential.
Date: March 15, 1961
Creator: Colgate, Stirling A.
System: The UNT Digital Library
Lawrence Radiation Laboratory Physcis Division Quarterly Report: February - May 1948 (open access)

Lawrence Radiation Laboratory Physcis Division Quarterly Report: February - May 1948

The following report is a quarterly report done by the Physics Division of the University of California's Radiation Laboratory, covering the period of February 1, 1948 to May 1, 1948. This report discusses general physics research and the development and operation of the accelerator.
Date: June 30, 1948
Creator: University of California. Radiation Laboratory.
System: The UNT Digital Library
Biology Division Semi-Annual Progress Report for Period Ending February 15, 1964 (open access)

Biology Division Semi-Annual Progress Report for Period Ending February 15, 1964

Technical report on the activities of the Oak Ridge National Laboratory Biology Division for the report period including a list of 346 publication and lectures and 205 short articles by members of the division on their research and activities.
Date: May 1964
Creator: Hollaender, Alexander, 1898-1986 & Carson, Stanley F.
System: The UNT Digital Library
The structural design of perforated plates : a review with annotated bibliography (open access)

The structural design of perforated plates : a review with annotated bibliography

A report about the stress analysis and elasticity literature that reveals considerable progress has been made in providing an analytical procedure for the structural design of components in the form of perforated plates.
Date: 1959
Creator: Rowley, John C.
System: The UNT Digital Library
Sherwood progress report no. 4, July 1959 - December 1960 (open access)

Sherwood progress report no. 4, July 1959 - December 1960

"Activities related to Project Sherwood are summarized under the following topics: propagation of waves, macroscopic magneto-fluid dynamics, stability, particle orbits, cusped geometries, collisionless shock theory, and other subjects."
Date: March 1, 1961
Creator: Grad, Harold, 1923-
System: The UNT Digital Library
Meson-Mass Measurements II - On the Measurement of the Masses of Charged Pions (open access)

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.
System: The UNT Digital Library
Electrical Properties of the Tungsten Bronzes (open access)

Electrical Properties of the Tungsten Bronzes

From abstract: "The electrical resistivity of NaxWO3, LixWO3, and KxWO3 has been measured at 300°K. The range of x-values was 0.25 < x < 0.9. All resistivities were characteristic of a metal and lie on a single curve. An extrapolation of the conductivity curve to zero conductivity indicated that the tungsten bronzes should be semiconductors for x < 0.25. The resistivities that have been measured for tungsten bronzes with x < 0.25 showed semiconducting behavior. The resistivity of LixWO3 exhibited an anomalous peak in the ρ vs Τ cuve. The Hall coefficient of Li0.37WO3 indicated one free electron per alkali atom as was previously found for NaxWO3. The Seebeck coefficient of NaxWO3 depended linearly on x[superscript]-2/3 as expected from free electron theory. The implications of these and some other data are discussed."
Date: March 21, 1962
Creator: Shanks, H. R.; Sidles, Paul Howard & Danielson, G. C.
System: The UNT Digital Library
The Canonical Theory of Motion of a Charged Particle in a Slowly Varying Electromagnetic Field (open access)

The Canonical Theory of Motion of a Charged Particle in a Slowly Varying Electromagnetic Field

"The canonical theory of motion of a charged particle in a slowly varying, static electromagnetic field is formulated. The Hamiltonian is written down explicitly in terms of the coordinates of the gyration and the drift. The method of approach is analogous to that of the canonical formalism with subsidiary condition as used in theories of collective motion in many-body systems, such as the motion of the center of gravity. In the lowest order of the perturbation, it is shown that the Hamiltonian for the drift motion averaged over the gyration phase is given by adding to the original Hamiltonian a potential term equal to the product of the magnetic moment and the magnetic field strength."
Date: June 15, 1961
Creator: Taniuti, Tosiya
System: The UNT Digital Library
Bibliography of Reports Relating to Project Sherwood (Controlled Thermonuclear Reactions) Written at University of California Radiation Laboratory, Livermore and Berkeley : 1953-1957 (open access)

Bibliography of Reports Relating to Project Sherwood (Controlled Thermonuclear Reactions) Written at University of California Radiation Laboratory, Livermore and Berkeley : 1953-1957

"This bibliography is a compilation of titles to unclassified reports, journal articles and conference papers written by members of the University of California Radiation Laboratory, Livermore and Berkeley, relating to Project Sherwood (Controlled Thermonuclear Reactions) from 1953 through 1957."
Date: May 1, 1958
Creator: Frost, Frederick E.
System: The UNT Digital Library
An Adiabatic Motion Of Charged Particles In Electromagnetic Fields (open access)

An Adiabatic Motion Of Charged Particles In Electromagnetic Fields

The guiding center motion and the adiabatic invariants of charged particle trajectories in electromagnetic fields are treated in this review. General and specific theories of charged particle motion are also reviewed.
Date: January 1961
Creator: Northrop, Theodore G.
System: The UNT Digital Library
The Numerical Solution of a Parabolic System of Differential Equations Arising in Shallow Water Theory (open access)

The Numerical Solution of a Parabolic System of Differential Equations Arising in Shallow Water Theory

"A finite difference approximation to a non-linear set of parabolic differential equations arising in shallow water theory is given. These difference equations were used to determine the shape and rate of propagation of a hum of fluid down a channel of constant depth. The hump of fluid was found to spread instead of steepen, as is the case in the usual shallow water theory."
Date: October 15, 1960
Creator: Heller, Jack & Isaacson, Eugene
System: The UNT Digital Library
An Alternate Interpretation of the Results on then p-Meson Decay Electron Spectrum (open access)

An Alternate Interpretation of the Results on then p-Meson Decay Electron Spectrum

We have preliminarily reported the interpretation of our experimental results that the intensity of the spectrum at the maximum energy was zero. But, as reported in the second paper UCRL-1261 we found that the results may also be fitted to a different spectrum with finite intensity at the maximum energy. Quite recently, however, the most probable value for the mass of the p-meson has been revised by two independent groups based on two different experiments.
Date: July 1953
Creator: Sagane, Ryokiche, 1905-1969
System: The UNT Digital Library
Polarographic Theory, Instrumentation, and Methodology (open access)

Polarographic Theory, Instrumentation, and Methodology

Classical polarography and voltammetry with other electrodes are discussed . 189 references taken from literature between mid-1957 and mid-to-late 1959 is surveyed.
Date: 1959
Creator: Hume, David N.
System: The UNT Digital Library
Mirror Machine Program : ARC Research Progress Report (open access)

Mirror Machine Program : ARC Research Progress Report

This report follows experiments concerned with a particular proposal or set of related proposals of means for the production of plasma with density above 10-11 particles per cm-3 with a temperature of the order of a few electron volts.
Date: October 15, 1956
Creator: Post, Richard F.
System: The UNT Digital Library
On the Crystal Chemistry of Salt Hydrates, III. The Determination of the Crystal Structure of FeSO4·7H2O (Melanterite)* (open access)

On the Crystal Chemistry of Salt Hydrates, III. The Determination of the Crystal Structure of FeSO4·7H2O (Melanterite)*

Monoclinic FeSO4·7H2O is the stable solid phase between -1.82° and 56.6° C in contact with a saturated water solution of FeSO4. It occurs in nature as an oxidation product of Fe-containing sulfides an is called melanterite. FeSO4·7H2O belongs to a series of compounds Me2+SO4·nH2O, where Mn2+ is a cation with an approximate ionic radius of 0.7Å. The 1-, 4- and 5-hydrates are known to crystalize each in only one form, whereas the hexa- and the heptahydrates occur both in two different forms. The crystal structure of the tetragonal NiSO4·6H2O; Zalkin, Ruben and Templeton reported the structure of the monoclinic CoSO·6H2O. Of the structure of the heptahydrates but one was described: the orthorhombic form of NiSO4·7H2O. No details were known about one of the monoclinic heptahydrates, though Leonhardt and Ness published the cell constants and the space group of FeSO4·7H2O.. In addition they stated essentially correct positional parameters for the sulfur atom and gave the correct positions of the iron atoms. The present investigation has been undertaken as part of an extensive study of salt hydrates. A preliminary account has been published before.
Date: October 15, 1963
Creator: Baur, Werner H.
System: The UNT Digital Library
Nonadiabatic Effects in Single-Particle Orbits (open access)

Nonadiabatic Effects in Single-Particle Orbits

From introduction: "The containment of a charged particle in a mirror field has been studied analytically and numerically. Formulas are presented which give the change in the magnetic moment as it passes from one end of the machine to the other."
Date: March 1957
Creator: Garren, Alper; Henrich, L.; Northrop, Theodore G.; Riddell, R. & Smith, L.
System: The UNT Digital Library
A Simple Analogue Instrument For Summing Angles in the Root Locus Method of Solving Ordinary Equations and Stability Problems (open access)

A Simple Analogue Instrument For Summing Angles in the Root Locus Method of Solving Ordinary Equations and Stability Problems

The root locus method of the treatment of stability problems in the field of servomechanisms is briefly summarized. A simple mechanical instrument of the analogue type (a summing device) containing no gear mechanisms, and designed to do most of the numerical work of the root locus method, is also described.
Date: July 10, 1953
Creator: Harris, Arnold H.
System: The UNT Digital Library
One Million Frame per Second Camera (open access)

One Million Frame per Second Camera

The design and construction of a 1,000,000 fps rotating mirror frame camera is described. Twenty five consecutive pictures 20 mm in diameter can be obtained on a strip of 35 mm film. A resolution of at least 20 lines/mm is obtained on a moderately fast film like Linagraph Shellburst. Accurate synchronization of the event to be photographed is required. The camera has been most useful in the investigation of explosive and related phenomena.
Date: 1954
Creator: Brixner, Berlyn
System: The UNT Digital Library
The Effect of Finite Conductivity on the Propagation of Hydromagnetic Slow Waves (open access)

The Effect of Finite Conductivity on the Propagation of Hydromagnetic Slow Waves

"The one-dimensional propagation of disturbances in an inviscid conducting fluid of finite magnetic Reynolds number is investigated. The basic equations are not hyperbolic but nevertheless the slow wave has a domain of dependence determined by the sound velocity."
Date: September 15, 1961
Creator: Taniuti, Tosiya
System: The UNT Digital Library
Meson Production By High-Energy Neutrons (open access)

Meson Production By High-Energy Neutrons

The angular distribution of charged x mesons produced by 300 <x> 30 Mev neutrons on C12 and Be9 have been studied. An analysis of the kinematics for meson production in a nucleon-nucleon collision indicates a fairly well defined center-of-mass system.
Date: April 23, 1953
Creator: Neher, Leland K.
System: The UNT Digital Library
Equilibrium Configuration of a Plasma in the Guiding Center Limit (open access)

Equilibrium Configuration of a Plasma in the Guiding Center Limit

"We compute the equilibrium configuration of a collision-free plasma contained in an axially symmetric magnetic field. The plasma is characterized by a non-scalar pressure tensor which is obtained from a microscopic distribution function in a form suggested b the guiding center approximation. The solution is calculated in the limit where the ratio of the width to the length of the plasma region and the ratio of the gas to the magnetic pressure are both small. Boundary values at the midplane as well as the shape of the plasma appear as arbitrary parameters in the solution. We give the solution to a corresponding scalar pressure problem for comparison."
Date: September 15, 1960
Creator: Oppenheim, Alan
System: The UNT Digital Library