Resource Type
Serial/Series Title
Country
States
330 Matching Results
Results open in a new window/tab.
Results:
1 - 24 of
330
next
Transient Beam Loading In Linear Electron Accelerators
"The subject of beam loading in linear electron accelerators has been discussed. With suitable design it is possible to place the equilibrium electron phase angle well ahead of the crest of the traveling wave in the accelerator. With beam loading the equilibrium position will move toward the crest, but the electron energy will remain constant or nearly so over a considerable range of loading. Some loss in energy will result from moving the equilibrium phase angle off the wave crest but the spread in energies due to beam loading should be reduced.
Date:
May 1957
Creator:
Neal, R.B.
Object Type:
Report
System:
The UNT Digital Library
Theory Of The Constant Gradient Linear Electron Accelerator
"The effect of beam loading upon the design and performance of the accelerator is examined. Results are given in dimensionless form so that the various equations and grams can be used at any operating frequency. The constant gradient accelerator is somewhat less subject to beam loading than the uniform accelerator structure. For an accelerator of given filling time and 20% more."
Date:
May 1958
Creator:
Neal, R.B.
Object Type:
Report
System:
The UNT Digital Library
A Report on the Kinematics of High Energy Electron Scattering
"A convenient summary is given of useful formulas on the kinematics of high energy electron scattering together with a derivation of the relevant formulas for transforming from the center of mass to the laboratory system such parameters as scattering cross sections. The formulas derived hold for any two- body collision: the approximation (m = 0) employed for the electron scattering calculations is rigorously true for the elastic scattering of photons."
Date:
May 23, 1957
Creator:
Bernstein, Jeremy
Object Type:
Report
System:
The UNT Digital Library
Amplitude and Phase Functions for the Revised Parameters of the Cambridge Electron Accelerator
"The phase and amplitude functions describing the betatron oscillations in the synchrotron are calculated using the revised parameters of the Cambridge Electron Accelerator. The results are given numerically and plotted in a graph for one machine period."
Date:
May 27, 1957
Creator:
Lanza, G.
Object Type:
Report
System:
The UNT Digital Library
A Survey of Non-Fuel-Bearing Materials for the Marine Gas-Cooled Reactor
Results of an initial examination of non-fuel-bearing materials for the Marine Gas Cooled Reactor are presented. Areas given specific attention include structural and cladding materials and graphite moderator. Other areas not included because of classification include zirconium hydride moderator and control materials. In each report section, available pertinent information is summarized and a plan for future work is given.
Date:
May 1, 1958
Creator:
Bokros, J. C.; Dijkstra, L; & Merten, U.
Object Type:
Report
System:
The UNT Digital Library
Progress Report No. 54 for the Period through April 30, 1959
This is the fifty-fourth progress report of the Laboratory for Nuclear Science at the Massachusetts Institute of Technology. Progress reported covers the period for Physics and Chemistry through April 30,1959. Progress is reported on: (1) Chemistry of the fission elements group, (2) Nuclear chemistry (inorganic) group, (3) Nuclear chemistry (organic) group, (4) Cosmic ray group, (5) High energy accelerator physics group, (6) Bubble chamber group, (7) Liner acceleratory group, (8) Rockefeller generator group, (9) ONR generator group, (8) Radioactivity group, (9) Cyclotron group, (10) Theoretical group, (11) Personnel listing.
Date:
May 1, 1959
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
A Transistorized Binary Counter for Extreme Environments
A transistorized binary counter circuit is described that operates over a temperature range of -65 degree F to +165 degree F. the supply voltage is 28 + 4 volts and the maximum trigger repetition rate is 5 kilocycles. the binary circuit is pre-settable and resettable by means of a switching arrangement that can be mechanized. Texas Instrument type 904 silicon transistors whose large signal current gain is 2.8 or greater at a -65 degree F can be used in this circuit.
Date:
May 27, 1955
Creator:
Marceau, J. E.
Object Type:
Report
System:
The UNT Digital Library
Counting Room Equipment and Procedures and Sample Preparation
The following are some of the equipment currently used in the Health Physics counting rooms at the Laboratory: scintillation counters, end window beta-gamma counters, precipitcon beta-gamma counter, autoscaler beta-gamma counter, and continuous flow proportional counter. This technical report describes the equipment, supporting equipment, procedures, and sample preparation in use at the Laboratory.
Date:
May 1954
Creator:
Weiss, M. M. & Marshall, J. B.
Object Type:
Report
System:
The UNT Digital Library
A Study of Location Times for Positions Arranged on a Panel in a Random and an Ordered Manner
The results of an experimental pilot study on the location time, for a sequence of N specified positions on a panel, are given for 1 <_ N <_ 30. The positions to be located were randomly arranged on one set of panels and arranged according to an ordering scheme on a second set of panels. Th location time for N positions randomly arranged on a panel varies approximately as N(2). In the case of an order arrangement the location time is essentially proportional to N. Even for as few as 30 positions, the location time for an random arrangement was twelve times greater than for an order panel. For 60 positions the ratio would be 19, and for 90 positions the ratio would be 26.
Date:
May 25, 1955
Creator:
Beeler, J. R.
Object Type:
Report
System:
The UNT Digital Library
Frequency Components of a Step Function and a Sinusoid
Fourier analyses are made on two functions. The first is a step function forward from periodic samples of a sinusoid. If the frequency of the sinusoid is less than one-half of the sampling frequency, it is shown that the step function has no frequency components less than one-half of the sampling frequency other than that of phase, and duration with respect to the interval of the analysis. It is shown that the insertion of a blank space in the period of analysis reduces greatly the uncertainty of the amplitude of the initial sinusoid as estimated from the results of the Fourier analysis. The results of the analyses are useful in the design and evaluation of certain analog data-analyzing systems.
Date:
May 10, 1955
Creator:
McGehee, R. M.
Object Type:
Report
System:
The UNT Digital Library
Principles and Techniques of Ultrasonic Inspection
Ultrasonic inspection for subsurface flaws is widely used in American industry. This report reviews the general principles and specific techniques of ultrasonic testing. The information is based on a review of the technical literature plus the experience of the Quality Assurance Department at Sandia Corporation in applying this nondestructive testing technique to quality evaluation programs.
Date:
May 23, 1955
Creator:
Psillas, Harold C.
Object Type:
Report
System:
The UNT Digital Library
The Propagation of Spherical Shock Waves
This technical report is a summary of unclassified theoretical work on propagation of one-dimensional shock waves and on the propagation of spherical shock waves in gases.
Date:
May 4, 1953
Creator:
Ungar, Eric E.
Object Type:
Report
System:
The UNT Digital Library
The Equation of the Fusion Curve
A generalization of the Lindemann law is used in connection with the Murnaghan equation of state for a solid to derive theoretically the empirical Simon equation for the fusion curve. For the alkali metals it is shown that experimental values of the temperature exponent in the Simon equation are quantitatively compatible with the theoretical evaluation given, and, furthermore, that the theory can predict approximate values of the experiment, in practice.
Date:
May 24, 1955
Creator:
Gilvarry, J. J. (John James), 1917-
Object Type:
Report
System:
The UNT Digital Library
Equipment and Preliminary Results for the Leaching of UO2 in a Basic Carbonate Circuit
Equipment has been designed and constructed for the purpose of leaching pure uranium minerals in both acidic and basic circuits. This equipment provides a means for removal of a series of samples during any one run, control over speed of agitation, indication of gas over pressure, and automatic temperature control. These units may be operated up to 1500 p.s.i. Solid UO2 samples were prepared by sintering under hydrogen to 1800 degree C. Preliminary results of the leaching of sintered UO2 in a basic Na2CO3-NaHCO3 circuit resulted in the formation of an insoluble yellow precipitate (probably Na2UO4) for low concentrations of Na2-NaHCO3. At higher carbonate concentrations no insoluble precipitate was formed and the rate of leaching was found to increase vary rapidly above 300 p.s.i. oxygen over pressure.
Date:
May 1955
Creator:
Pearson, Ray L.; Mackay, Theron L.; Wadsworth, Milton E. & Fassell, W. Martin, Jr.
Object Type:
Report
System:
The UNT Digital Library
Equation of State of Water
A generalization of the Fermi-Thomas model for application of mixtures. This study attempts to determine the equation of state of water up to pressure of 10,000 megabars and temperatures of several thousand electron-volts.
Date:
May 23, 1955
Creator:
Latter, Albert L. & Latter, Richard
Object Type:
Report
System:
The UNT Digital Library
Line Broadening by Electrons : the Validity of Simple Theories
A comparison of the simple impact theories of line broadening by electrons with the detailed computations of Kivel, Bloom, and Margenau.
Date:
May 9, 1955
Creator:
Meyerott, Roland Edward & Margenau, Henry, 1901-1997.
Object Type:
Report
System:
The UNT Digital Library
Preliminary Leaching Investigation of Babrosco and Afrikander Lease Residues
Leaching and filtration tests were conducted on dump samples and current residues from Afrikander Lease and Babrosco properties on the Witwatersrand, South Africa.
Date:
May 12, 1952
Creator:
Hollis, R. F. & Lynch, J. T.
Object Type:
Report
System:
The UNT Digital Library
Possible Substitutes For Glue in South African Ore Treatment
We investigate the possibilities of using another reagent than glue as a filtration aid in South African ore treatment.
Date:
May 14, 1951
Creator:
Woody, R. J.
Object Type:
Report
System:
The UNT Digital Library
Remark on the Radiative Muon Decay in the Theory With an Intermediate Vector Meson
"The problem of explaining the lack of radiative muon decay in an intermediate charged vector meson theory is discussed. A possible way of introducing the charged vector meson to the theory of weak interactions is outlined in which renormalization is retained. However, if this way is used, the anomalous magnetic moment is calculated to be large, which is in contradiction with expectation."
Date:
May 16, 1961
Creator:
Bialynicka-Birula, Z
Object Type:
Report
System:
The UNT Digital Library
Development of a Gas Injector System for Homogeneously Labeling Gas Storage Reservoirs
"The laboratory experiments and field testing which were carried out in the development of a homogeneous gas labeling device are described. Detailed drawings of the injector and its most critical components are included. Recommendations are made for a production model of the device along with estimated costs of construction."
Date:
May 1, 1961
Creator:
Sewell, Curtis & Schulz, Isidor
Object Type:
Report
System:
The UNT Digital Library
Development of Techniques for Power Production From Mixed Fission Products
"Progress is reported on Phase II of a program for the development of a mixed fission product fueled thermoelectric generator. Materials studies are described in which bonded assemblies of bismuth telluride were life tested up to 3000 hours at 350 to 400 deg F hot junction temperature. Data were too inconsistent to define any satisfactory long-life bonding process. Further work is needed to eliminate the process variables. Insulation studies aimed at determining the thermal conductivity of various insulations with different fill gases under reduced pressures are described. Opacified aerogel powder appears to be very promising as an insulation medium for a diffuse heat source. A full- scale simulated test generator aimed at proving out the concept of a diffuse heat source for power generation is described. Progress on the construction of this electrically heated generator and its thermoelectric power converter is related.
Date:
May 21, 1962
Creator:
Lemanski, E. J.
Object Type:
Report
System:
The UNT Digital Library
The Influence of Isotopic Composition on the Maximum in the Cosmic Ray Energy Spectra
"The previously found maximum in the cosmic radiation energy spectrum is discussed, and the possibility that it arises in part from a misinterpretation of the data due to oversimplifying assumptions about the composition of the beam is examined. The importance that lack of recognition of isotopic composition may have is pointed out, and it is clear that this importance is strongly dependent on the measurements made and on the cut-off rigidity."
Date:
May 8, 1961
Creator:
Appa Rao, M.V.K. &
Object Type:
Report
System:
The UNT Digital Library
Radium and Mesothorium Poisoning and Dosimetry and Instrumentation Techniques in Applied Radioactivity
"The study of the toxicity of Ra and MsTh(Ra/sup 228/) in humans was continued. Several Thorotrast cases were also examined. Physical and clinical studies were made on 151 persons. In all cases possible gamma ray measurements were made of Ra and MsTh decay products retained in the body, alpha -ray measurements of Rn and Rn/sup 220/ in breath, a complete medical history was taken, a complete x-ray examination was made of the skeleton, and urinalysis, hematological, and blood chemistry studies were made."
Date:
May 1963
Creator:
Evans, Robley D.
Object Type:
Report
System:
The UNT Digital Library
Radium and Mesothorium Poisoning and Dosimetry and Instrumentation Techniques in Applied Radioactivity
"The study of the toxicity of Ra and MsTh(Ra/sup 228/) in humans was continued. Several Thorotrast cases were also examined. Physical and clinical studies were made on 151 persons. In all cases possible gamma ray measurements were made of Ra and MsTh decay products retained in the body, alpha -ray measurements of Rn and Rn/sup 220/ in breath, a complete medical history was taken, a complete x-ray examination was made of the skeleton, and urinalysis, hematological, and blood chemistry studies were made."
Date:
May 1960
Creator:
Evans, Robley D.
Object Type:
Report
System:
The UNT Digital Library