Technical drawing of an amplifier for a nuclear reactor.

1 technical drawing of a regulated supply of 300-400 volts for nuclear reactors.

From introduction: Complete removal of fluorine iron waste gases also containing uranium hexaflouride was the object of researches described in this chapter.

From abstract: Test results indicate that the hydrofluorination method for the analysis of tuballoy in solid salvage residues yields sufficient results with a high degree of accuracy; while a modification of the procedure gives good results in approximately half the time.

From abstract: "This report is concerned with various methods of bonding tuballoy to aluminum using various commercially available adhesives."

Technical drawing of cloud chamber and ionization chamber for use in a nuclear reactor.

Technical drawing of a cloud chamber and ionization chamber for use in nuclear reactors.

The following report follows an investigation conducted to compare some physical and chemical properties of Brush beryllium bars made by their process "Q" and with those of extruded bars made from cast metal, from compressed Clifton flake metal, and from compressed turnings resulting from machining of previously extruded cast metal.

From introduction: "These insoluble residues have also been subjected to a continuous fusion process with sodium bisulfate being used as the flux. The results obtained with this method and a detailed description of the procedure employed have been recorded in two reports."

Technical drawing of counting circuits and electronic circuits for use in nuclear reactors.

From abstract: "An apparatus for analysis of metal samples for oxygen content is described. Vasuum [sic] fusion in a graphite crucible which is insulated by porous carbon in an all pyrex glass apparatus is used to remove the oxygen as carbon monoxide. Temperatures over 2000°C. are attainable with a 6 K.V.A. Ajax converter for induction heating. Successful operation depended upon a preliminary vacuum heating of the carbon parts at 2100°C. to remove hydrocarbon tars so that cracking of the pyrex glass will not occur due to deposit of tar. An operating temperature of 1750°C. - 1800°C. has been found satisfactory for uranium when using a platinum bath. The platinum bath is the most suitable bath because of its low volatility, its satisfactory carbon solubility, and because of the decrease of 'getting errors' due to volatility of reactive metals. Most metals form stable compounds with platinum and are therefore strongly held by the platinum bath and can not vaporize and thus react with the excaping [sic] CO gas..."

Abstract: "A method for the determination of small quantities of thorium in the presence of large quantities of uranium is presented. Solid samples are dissolved in an appropriate acid. Reducible metals are removed by means of a mercury cathode. Excess acid is removed by fuming to dryness. The residue is dissolved in water and made alkaline with saturated ammonium carbonate solution, thus complexing the uranium and permitting the precipitation of thorium hydroxide with the aid of an aluminum hydroxide carrier. Thorium is determined colorimetrically with thoron."

Introduction: "The product of a special run made in XAX was submitted to the Assay Department for a determination of the residual content of the 235 isotope. The charge material on this run was impoverished, with a ratio of approximately 1:2,000. The sample was submitted in the form of purified T3O8."

"In consideration of the known high efficiency of penta-ether on the extraction of [Uranium] from aqueous solution without particularly affecting most other cations in the solution, it was felt that a TNU (total non-U cation) determination could be based upon the use of pents-ether to remove the U from non-U cations. After such separation, the non-U cations could then be determined in essentially the same manner as in the present TNU method (Method 50, CD-3801). The use of the penta-ether separation would have the advantage of reducing the amount of handling of the sample required in the present procedure and of reducing the time required to complete a TNU determination."

This report deals solely with the systematic diagnosis and location of the cause of instability of an assay mass spectrometer. It is based around a chart that illustrates the general practices followed in the laboratory.

Development of certain liquid and solid fluorocarbon compounds with special properties.

Abstract: "Estimation of the intensity of the uranyl fluorescence furnishes a method for the determination of quantities of uranium as low as one-half microgram of uranium in one-half illilitor of glassy phosphoric acid. The test has been used to detect directly three parts of uranium in one million parts of thorium" (p. 1).

From abstract: "An adaptation of a colorimeter for the rapid estimation of small amounts of uranium to ± 5% by fluorescence of a sodium fluoride bead or fluoride-carbonate melt is described. Solutions containing from 0.1 to 1000 micrograms per milliliter may be tested directly. The limit of visual detection on a 20 mg. bead is about 0.0003 microgram of uranium. A periodic chart of interferences is presented. The strangest interferences center around the latter parts of each transition series of elements."

From abstract: "This is a review, with annotated bibliography, of the mode of occurrence of the element germanium. It is not a list of specific ore deposits, but a summary of the types of minerals and rocks in which germanium has been reported to occur. Best sources for germanium are indicated, based on the data in the literature and on the unpublished spectrographic studies of the Geological Survey on mill and smelter products. Suggestions are made for further investigations."

From introduction and acknowledgements: This report is written to supplement and complete the record contained in some fifty district and special reports already submitted, and duplication of material in district reports has been studiously avoided. The data herein contained are largely of a regional type, inclusion of which was not wholly appropriate to the district reports.

A brief history of the development of the atomic bomb in the United States and Germany during World War II.

From introduction: "The first part deals with stationary detonation waves...the second part is concerned with the structure of detonation waves of finite age...the third part deals with the steady state motion attained by a detonation wave in certain cases of two-dimensional flow."

Report describing improvements upon the design of a 8 and 32 inch diffusion pump combination. Design specifications and functionality data are included in the report.

Report describing the design and performance of an 8 inch and 32 inch diffusion pump and measurements of their capacity.