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The Metal-Dielectric Junction of High-Voltage Insulators in Vacuum and Magnetic Field

Description: From introduction: "This study is concerned with the shape of the electrodes of high-voltage insulator and with the method of joining them to the dielectric. The study is limited to insulators operating in vacuum, with special interest in the cases where strong magnetic fields are present. It is further limited to insulators with the high-voltage electrodes maintained at negative potential. The object of the study was to obtain information that would aid in improving the design of the insulators in two respects. First, to decrease to a minimum the number of charged particles set free which may directly or indirectly cause early failure of the insulator. Second, to increase the voltages at which partial or complete flashovers occur. Therefore, experiments were made to determine the principal phenomenon which have as their primary source the insulator under high electrical stress in vacuum."
Date: August 8, 1945
Creator: Kjofoid, M. J.; Alger, Raymond S. & Graves, D.
Partner: UNT Libraries Government Documents Department

The Effect of Geometry and Voltage Variations on the Operations of the Phillips Ion Gage

Description: Abstract: "The study of ten P.I.G. geometries with copper electrodes and d.c. voltage indicates that from a pressure of 0.1 to about 3.0 microns, depending upon the gage, there is a consistent change in the air pressure-current characteristics of a P.I.G. as the geometry and voltage are changed. At higher pressures discontinuities appear in the gage current and prohibit its use as a pressure gage. In all useful geometries, the greater the applied voltage above 1000 volts, the shorter the useful portion of the pressure-current curve became. Below 1000 volts the curve tended to be unstable. With other conditions constant, the pressure limit increased as the cathode separation decreased and as the anode diameter increased. The empirical equation for the current in certain Philips Ion Gages at certain pressures and voltages is I = a'Pe-p/b where I is the current, P the pressure, e the Naperian base and a' and b constants and dependent upon geometry and voltage."
Date: August 22, 1945
Creator: McKinney, C. R.; Eggen, Donald T.; Bishop, A.; Arnold, W. A. & Starr, C.
Partner: UNT Libraries Government Documents Department

High Voltage Rectification

Description: Introduction: "This meeting was called by Mr. S. H. Smiley in order to review progress made on the corrosion problem since the last meeting on September 5th, and to devise a definite program on the specific problem of the corrosion of the coolant coolers. The minutes of the last meeting were reviewed briefly and it was pointed out that neither the corrosion of the water piping nor the hot water tanks presented any immediate concern. The chief concern then is with the excessive pitting of the cooler shells as disclosed in E.T.4I's. reports on those coolers which were removed for inspection."
Date: 1945
Creator: Nelson, Walter H.
Partner: UNT Libraries Government Documents Department

Quantitative Analysis by X-Ray Spectroscopy for Small Amounts of T

Description: Report discussing experiments using an x-ray spectrograph to perform a quantitative analysis of small amounts of T. "The main question was 'What will be the lower limit of sensitivity?'"
Date: 1945
Creator: Hudson, R. L. & Burkhart, L. E.
Partner: UNT Libraries Government Documents Department

Qualitative Observations of the Characteristics of TCl₅

Description: Summary: The controlled decomposition of the TCl₅ was carried out in an electric furnace at furnace temperatures varying from 114° to 550°C. The results indicate that chlorine evolution is noticeable when the TCl₅ temperature is about 75°C. The rate of reaction increases rapidly at a TCl₅ temperature of 175°C. Thus the possibility of TCl₅ existing at a very high temperature becomes uncertain. The TCl₄ prepared at the low temperatures (up to 300°) was obtained as a micro crystalline powder while those products allowed to heat at 400°-500° had a characteristic crystalline appearance.
Date: 1945
Creator: Gavlin, Gilbert; Hubbard, J. V. & Clewett, O. H.
Partner: UNT Libraries Government Documents Department

Abrasive Blasting for Cleaning Parts

Description: Abstract: A demonstration on August 22, 1945, showed that Alpha or Beta M or K parts, including insulators, can be well cleaned with a pressure-feed abrasive blaster. The abrasive is a slurry of alumina and water mixed with high velocity air in a special feed nozzle. The slurry is continuously recycled.
Date: September 1945
Creator: McWherter, Jack R. & Yerazunis, Stephen
Partner: UNT Libraries Government Documents Department

The Preparation and Analysis of the Carbides of Ta, Be, Zr, and Th

Description: Summary: "Carbides of Th, Ta, Be, and Zr have been prepared from the oxides of these metals by reaction with graphite in the induction furnace. Methods for the analysis of these compounds are given."
Date: 1945
Creator: Boulger, E. W.; Sausville, J. W. & Larson, C. E.
Partner: UNT Libraries Government Documents Department

Interval Between Pulses of Counter or Scaler

Description: This paper is based off of an operation of a recording tape scaler, which records pulses from a counter or scaler upon a tape as a function of time. With the recording tape scaler, the interval between pulses of counter or scaler is measured in this report.
Date: 1945
Creator: Coveyou, R. R.
Partner: UNT Libraries Government Documents Department

Analytical methods and results

Description: Report detailing the analytical methods and results of a study designed to measure the total alpha particle activity of samples. The method being used was previously in use at Columbia University. The report recognizes potential for grave errors, but makes no effort to minimize the effect of the roughness of the sample.
Date: 1945
Creator: Thomas, Henry C. & Bither, Tom Allen
Partner: UNT Libraries Government Documents Department

An Attempt to Detect Small Amounts of Irradiation Injury

Description: The following document analyzes data on blood changes, sterility, emaciation and lassitude to detect small amounts of irradiation injury.
Date: September 1945
Creator: Cupp, M. B.
Partner: UNT Libraries Government Documents Department

100-Ton Test : Measurement of the Velocity of Sound

Description: Abstract: The velocity of sound at the time of 100-ton shot at Trinity was measured to be 1116.1 ft/sec. Values of blast pressure computed from the excess velocity are given, but are not considered as reliable.
Date: June 15, 1945
Creator: Barschall, H. H. & Martin, G.
Partner: UNT Libraries Government Documents Department

Application of Conductivity Measurements to a Study of (a) Complex Formation Between F[ Gamma] + and F- and Al+ + + and F- (b) Titration of F- Ion with H + Ion

Description: From introduction: This report describes some preliminary electro-conductometric titrations which were made in order to ascertain whether the method [for selecting the best complexing agent for any problem that may arise] gave interpretable results.
Date: 1945
Creator: Tober, Frank W., 1919-1995 & Larson, Clarence E.
Partner: UNT Libraries Government Documents Department

Tuballoy Peroxide

Description: The following report determines the solubility of tuballoy peroxide over a fairly wide range of sulphate, hydrogen ion and hydrogen peroxide concentrations.
Date: 1945
Creator: Grieger, P. F.; Christopherson, E. W.; Oringer, Roy & Gates, J. W.
Partner: UNT Libraries Government Documents Department

Tuballoy Oxides in the Reduction of TO₃

Description: Introduction: "This investigation was undertaken because of the importance of the reduction of TO3 to TO2 by hydrogen gas in the conversion of TO3 to TF4. We hoped to discover what factors affect the rate of reduction and the quantitativeness of the yield."
Date: 1945
Creator: Tanford, Charles; Tichenor, R. L. & Larson, C. E.
Partner: UNT Libraries Government Documents Department

TO₃ Reduction and Chlorination in the Experimental Glass Fluidizer

Description: Abstract: "Temperatures above 400 C are required before reduction will take place with AH3. Above 500 C, a pyrophoric product was obtained. The chlorination temperature should be about 350 C initially and above 450 C at the end of the reaction to achieve 99% chlorination."
Date: December 20, 1945
Creator: Lowrie, Robert Sydney & Hubbard, J. V.
Partner: UNT Libraries Government Documents Department

Tuballoy Peroxide

Description: The following report is the third in a series of reports discussing tuballoy peroxide. This report in particular discusses the solubility of tuballoy peroxide in sulphate solutions based on the tubanyl sulphate association hypothesis discussed in previous reports.
Date: 1945
Creator: Grieger, P. F. & Gates, J. W.
Partner: UNT Libraries Government Documents Department

Tolerance values for thorium

Description: A report about thorium and the tolerance concentrations of this element.
Date: 1945
Creator: Morgan, K. Z.
Partner: UNT Libraries Government Documents Department

The Solubility of Uranyl Oxalate and the Existence of Undissociated Uranyl Oxalate in Solution

Description: Abstract: "The solubility of the solid, UO2C2O4 x rH2O, was measured at various acid and uranyl nitrate concentrations. The results of the measurements prove the existence of the uranyl oxalate complex - UO2C2O4, in solutions containing excess UO2^2."
Date: September 8, 1945
Creator: Pimentel, George C. & Stevenson, F. R.
Partner: UNT Libraries Government Documents Department

Separation of Tuballoy From Gunk Solutions by Sulfite Precipitation

Description: Summary: A method is presented for the precipitation of tuballoy, apparently as a tubanyl ammonium sulfite, from gunk solutions containing the contaminants encountered in the recovery cycle. The impurities are not precipitated under the conditions employed, and their amounts in the product are reduced to values which can be attributed to occlusion. The recovery of tuballoy on one precipitation ranges from 99.5% to 99.9%.
Date: April 18, 1945
Creator: Ryon, A. D. & Armstrong, E. C.
Partner: UNT Libraries Government Documents Department

Equations Used for Calculation of Data by the Feedback Method

Description: The following report studies a method of assay where an unknown sample is determined by comparison with a standard sample of known isotopic ratio. The purpose is to acquaint the technical personnel with the fundamentals of the feedback method of assaying samples of TF6.
Date: October 26, 1945
Creator: Happ, G. P. & Cameron, A. E.
Partner: UNT Libraries Government Documents Department

Progress Report - Project 31: Vapor Phase Chlorination of TO₃

Description: "This work is a continuation of an investigation begun in January, 1945, on a laboratory study of various methods for the chlorination of TO3. The work carried out this month deals entirely with gas phase chlorination, the liquid phase chlorination of TO3 having been turned over to Miss Hubbard. Gas phase chlorination of TO3 by means of CCl4, S2Cl2, SOCl2, SO2Cl2, and Cl2 have been carried out under varying conditions in the several different types of reactors."
Date: April 2, 1945
Creator: Parsons, George S.; McCabe, Charles L.; Engle, G. F. & Larson, C. B.
Partner: UNT Libraries Government Documents Department