This report is about The Chemistry of Uranium(VI) Orthophosphate Solutions. a series of reports describing an investigation of the Uranium(VI) Orthophosphate system.

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The elastic differential scattering cross section of 190 MeV deuterons by protons has been measured from 15 degrees to 170 degrees in the center of mass system. The cross sections were obtained by subtracting the carbon counts from those received with a polyethylene target. Part I presents a description of the experiments. Results are shown in Table IV and Fig. 3. Part II compares these results with those expected from theory by making use of a method developed by Chew. A summary of this comparison is given in Table VII.

Our hypothetical Trustee recognizes that the economic and social pressures directed at finding new sources of abundant low-cost energy are about to become compelling. As a prudent Trustee, he would say the time for action has come. He would urge that the nation's talents, public and private, be released for the development of nuclear furnaces (reactors) capable of furnishing heat for the generation of electricity, for district central heating and for industrial process heating. He would urge that we continue to explore nuclear reactions other than the fission of uranium and thorium. There is hope of domesticating the fusion reaction that makes the hydrogen bomb go. Economical fusion of the hydrogen contained in a cubic mile of sea water would be a source of capital energy equal to all conceivable needs for many hundreds of years. He would be concerned about the vast quantities of metals, some of them already in short supply, that would be required by very large nuclear power programs. He would suggest that we search for these metals by methods yet to be developed, and in novel places, including the sea. Finally, as our ultimate anchor to windward, he would urge the exploration of all ways …

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The general program established at Argonne National Laboratory in connection with the Fast Power Breeder Reactor (P BR) includes performance of exponential experiments on assemblies having compositions which may exist in the reactor core. This report deals with that phase of the program known as the Fast Exponential Experiment which may be described very briefly as follows: An assembly of fissile U/sup 235/ and fertile material (too small to be self- critical) intermixed with poisons (such as are encountered in the mechanical structure and coolant system of a self-sustaining reactor) is fed with neutr ons from an auxiliary source. By measurements of the neutron flux within the assembly, important parameters can be calculated which are necessary to the proper design of an actual critical reactor of the same composition. (auth)

Pile temperature control is normally maintained by using four horizontal rods, two ``long`` rods extending to the far side of the pile and two ``short`` rods whose tips are on the near side. (1) This procedure prevents cycling of ``hot spots`` about the pile, but does not achieve symmetrical horizontal temperature distribution. Prior to pile operation the cadmium-containing cans were removed from the near ends of the two ``long`` control rods, numbers 5 and 11, at C pile, so that when these rods were in the ``full in`` position their poisoning effect outside the flattened region at the near side of the pile would be small. By using these ``half rods`` in conjunction with ``short`` rods it was expected that a nearly symmetrical horizontal temperature distribution could be maintained. A comparison of near-to- far temperature distribution at C-pile with other piles indicates that gains in production of 4% during early operation of a pile and 3% during later equilibrium operation can be realized by using the half-rods. On the basis of these observations ``half-rods`` are to be incorporated in the K-piles currently under construction. It is recommended that the ``long`` control rods in existing piles be replaced by rods altered …

Between June and August, 1952, a series of leaking process tubes were discovered in F and D Piles. All of the tubes, six from F and two from D, were removed and found to be leaking from a pitting attack that progressed from inside the tube walls. During this same period a serious slug pitting attack, not previously observed, was found on many slugs discharged at F Pile. Two hypotheses were presented that were considered that most likely explanations of the observed corrosion effects. The first mechanism-presented involved the process of cavitation. Briefly this hypothesis proposed that an obstruction to the water flow in the slug-tube annulus, such as a cocked slug or partially plugged annulus, caused the formation of a low pressure area capable of sustaining water vapor formation. The water vapor thus formed moved into the undisturbed, or higher pressure, regions of the annulus with the subsequent collapse of the vapor bubbles. This mechanism weakened or destroyed the protective oxide coat on the slugs and tubes, producing a localized corrosion phenomenon. The second hypothesis proposed to explain the observed effects was the erosion-corrosion hypothesis. This hypothesis presented the mechanism of protective aluminum oxide coat removal by the abrasive …

This document presents a summary of work and progress at the Hanford Engineer Works for May 1953. The report is divided into sections by department. A plant wide general summary is included at the beginning of the report, after which the departmental summaries begin. The Manufacturing Department reports plant statistics, and summaries for the Metal Preparation, Reactor and Separation sections. The Engineering Department`s section summaries work for the Technical, Design, and Project Sections. Costs for the various departments are presented in the Financial Department`s summary. The Medical, Radiological Sciences, Utilities and General Services, Employee and Public Relations, and Community Real Estate and Services departments have sections presenting their monthly statistics, work, progress, and summaries.

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Analysis indicates that, in order to achieve supersonic flight with nuclear powered aircraft, a reactor -power plant combination capable of operating at temperatures considerably in excess of current practice must be developed. It is pointed out that there exist two general avenues of approach toward the goal of attaining high temperature reactors and power plants. The first approach involves the continuation and augmentation of research along the lines pursued by the conventional turbo-jet engine manufacturer, namely a search for material coatings or materials that will retain structural strength in high temperature oxidizing atmospheres. The second approach seeks to take advantage of the peculiar characteristics of the compressor-jet engine that permit the operation of the high temperature components in a non-oxidizing atmosphere. The results of a preliminary design study of a supersonic aircraft powered by a high temperature sodium, liquid vapor compressor -jet engine are summarized. The analysis considered, in as much detail as was warranted by the limited experimental information available, the characteristics of the reactor, power plant and airframe involved in determining performance. This study has been conducted for the purpose of guiding future, long -t e r rn , research work along the lines of high temperature reactors …

Searches for methods of sterilization of foods so as to overcome changes in flavor, texture and color caused by customary sterilization procedures.

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