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At the request of Lawrence Radiation Laboratory, four plutonium strips 0.050 inches thick, 0-50 inches in width and 6 inches in length have been examined by metallographic, chemical, X-ray, density and dilatometric methods. The data obtained will help calibrate high energy electrical discharge equipment used to rapidly heat plutonium.

Selective hydrocracking of total coolant was found to be an efficient and economic method for reconstitution of high boiler in the coolant to usable product. Such a process could eliminate the expense of vacuum distillation and disposal of high boilers produced in a nuclear reactor power plant. The selective conversion was possible since polyphenyls were found to be more susceptible towards hydrocracking as the phenyl chain length increased. Both cobalt molybdate on alumina and nickel oxide on alumina (50 to 80 square meters per gram) were found to be efficient catalysts at conditions of 900 deg F and 1000 psig with the latter giving more selective conversion to terphenyls. Continuous flow hydrocracking tests on OMRE Core II cool ant (containing 23% high boiler) resulted in 90 to 100% conversion of high boiler at product recoveries of 85 to 95 wt%. Average molecular weights of the products (biphenyl and heavier) were in the range 205 to 225 compared to 270 for Core II coolant. High boiler in Core III-A coolant which contained mainly first-generation polymers (hexaphenyls) was slightly more refractory toward hydrocracking than Core II high boiler, and conversion decreased slightly with increasing on-stream time. However, at optimum condition for processing …

A road test, performed on a SNAP 10A mass mockup system, indicated that shock and vibration inputs under actual conditions were not excessive. During the course of travel from the Santa Susana field laboratory to Edwards Air Force Base, and during field trials at Santa Susana, the test system was subjected to only two accelerations exceeding 2 g, and no inputs exceeded 2.4 g. It was concluded that shock and vibration to SNAP systems from highway transporation can be adequately controlled by: selecting the appropriate vehicie, providing proper packaging; specifying route and speed limits for various driving conditions; using ordinary care in loading and unloading; and including suitable shock monitoring instruments with the shipment, (P.C.H.)

The differential cross sections for elastic scattering of 14-Mev neutrons from nitrogen and oxygen were measured in the angular range from 17 to 140 deg , using liquid targets and annular ring geometry. Inelastic scattering to the 2.31 and 3.95-Mev levels in N/sup 14/ and to the levels near 6 and 7 Mev in O/sup 16/ was investigated over a more restricted angular range. The 2.31-Mev level in N/sup 14/ was not excited appreciably, in disagreement with previously reported results. For both elements, the elastic scattering cross sections (determined to an accuracy of 10%) were found to be appreciably higher than the optical model predictions by Rjorklund and Fernbach for scatterirg angles larger than 70 deg . The inelastic cross sections measured are, within experimental accuracy, the same as the corresponding (p,p') cross sections. (auth)

The problem of the bimolecular rate constant, alpha , for the mutual charge neutralization reaction (ion-ion recombination) for ions formed by the vacuum ultraviolet photolysis of nitric oxide is considered. The pressure dependence of alpha over a pressure range of 10 to 600 torr for mixtures of a few hundred microns of NO with He, Ar, Kr, Xe, H/sub 2/, D/sub 2/, and N/sub 2/ was measured. From the low-pressure limit of alpha , the rate constant for charge neutralization in the absence of a third body was found to be k/sub o/ = 2.1 plus or minus 0.4 x 10/sup -7/ cm/sup 3// sec. The high-pressure limit of alpha was estimated to be 2.0 plus or minus 0.5 x 10/sup -6/ cm/sup 3//sec. The third-body efficiencies for promoting the charge-neutralization reaction were measured. The results, relative to He as the third-body gas, are H/sub 2/= 1.4 plus or minus 0.4, D/sub 2/= 1.5 plus or minus 0.4, Ar =3.6 plus or minus 0.8, Kr =4.3 plus or min11.0, N/sub 2/ = 5.2 plus or minus 1.1, and Xe = 6.8 plus or minus 1.5. The average ionic mobility in the gas mixtures is estimated, and the mobilities indicate that …

Metals and alloys germane to thermionic energy converter usage were screened for embrittlement by liquid cesium. Techniques are described for more detailed studies of ceramics and susceptible metals. Definite reductions in tensile ductility were observed for 302 stainless steel and molybdenum. Bend ductility was lowered in titanium, titanium-8 aluminum-4 vanadium alloy, niobium, tantalum, and silver-- copper eutectic solder. Some difficulty in reproducibly wetting samples was evident. Slightly contaminating the cesium with oxygen (or water) was observed to increase cesium wettability. (auth)

: : 7 : ; : = : : 9 ; 8 : ; / he use of organic liquids as reactor moderator-coolants is presented. A major part of the study was devoted to the mechanism of radiolytic damage to coolants. A mathematical treatment for handling information on the relative reactivity of different positions on an aromatic ring was developed in some detail. Determinations on products from the radiolysis of terphenyls, biphenyl, and mixtures of these with benzene indicate that free radicals may be the main reactive species generated but that others are present. Comparison of the data with reactions of chemically or photochemically generated free radicals shows that the radiolysis is not random, especially at 300 deg C, but that meta radicals are more frequently formed. Attack by the active species on another molecule is favored in the para position and repressed at the ortho position compared to the meta. The distribution of isomers found indicates that H/sub 2/ abstraction by the free radicals and isomerization reactions do not occur to an appreciable extent. New analytical methods were developed. Chromatography on a solid salt column using LiCl proved to be a very satisfactory method for quaterphenyls and most hexaphenyls. …

From 19th International Union of Pure and Applied Chemistry Congress, London. A systematic introduction is presented to the subject of the variation with pH of the polarographic half-wave potential, which is probably the most readily measured electrochemical energetic parameter of organic compounds. Emphasis is placed on (a) the types of relationships observed for both reversible and irreversible electrode processes, (b) the mathematical formulation of these relationships, (c) the structural, mechanistic, kinetic, and environmental factors influencing such relationships, and (d) the presumptive physical causes for such relationships, e.g., the effect of pH on the electrochemical kinetics. Although the discussion is primarily concerned with behavior in aqueous solution, the conclusions drawn are equally valid for nonaqueous media in which hydrogen ion or some other Lewis acid can play a significant role. The half-wave potential for an organic electrode process may be independent of pH, or may vary lineanly or sigmoidally; other types of relationships observed are likely to be combinations of such effects. These variations may be due (a) to direct participation of hydrogen ion in the transition state involving the electroactive site in the organic molecule and the electron source, e.g., polarization of the bond to be broken, (b) to control …

Nonlinear vibration is discussed and compared with linear vibration. Nonlinear vibration phenomena are described, and methods for testing a nonlinear system, collecting and analyzing the data, and interpreting the results are suggested. (D.L.C.)

Report issued by the Bureau of Mines on the clay-silica deposits found in Bovill, Idaho. As stated in the abstract, "the geology, mineralogy, beneficiation, and potential uses of the clay and quartz fractions of the Bovill deposit are described" (p. 1). This report includes tables, graphs, photographs, and maps.

Report issued by the Bureau of Mines over studies conducted on the compounds of coal carbonization. Descriptions of these compounds are discussed. This report includes tables.

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Progress in health physics is reported under 20 topics. Separate abstracts were prepared for 19 topics. Education, training, and consultation are also discussed (M.C.G.)

From Introduction Statement of Objectives: "The purpose of this publication is to provide assistance to the practicing engineer who is faced with the problem of making dynamic measurements of rapidly changing pressures."

ABS>Progress in nuclear safety research and development is reported. Topics covered include: reactivity effects of small fuel displacements in a pool- type reactor; studies in nuclear safety of fuels outside reactors; release of fission products from out-of-pile reactor fuels; release of fission products in in-pile melting or burning of reactor fuels; characterization and control of accident-released fission products; fission-product evaluation; I/sub 2/ removal from oxidizing gases at high temperatures; attenuation of fissionproduct escape by intrinsic processes; nuclear safety pilot plant; nuclear safety information center; radiochemicalplant safety studies; and space safety. (J.R.D.)

A total of 553 references are listed on the SNAP program and related topics. The references were taken from Nuclear Science Abstracts to Dec. 31, 1962. The contents are arranged in sections on radioisotope-fueled units, reactorfueled units, direct energy conversion, and general topics on nuclear auxiliary power. (J.R.D.)

Report regarding an airborne radioactivity survey that took place in the 7,000 square mile area around the GNOME test site near Carlsbad, New Mexico. Topics include the types of bedrock noted in the area as well as their levels of radioactivity.

Annual report submitted by the Boy Scouts of America to Congress describing highlights from 1962, activities, finance, service organizational leadership, and other information about scouting programs.

The Journal contains the proceedings of the Senate of Texas including legislation, reports, discussions, votes, and points-of-order. Some volumes also contain supplementary materials. The index begins on page 1739.

Progress in solid state physics is reported in the following areas: theory, crystals, metals and nonmetals, radiation effects, and other subjects. Separate abstracts were prepared for the fifteen sections of the report. A list of 70 papers and publications is included. (D.C.W.)

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The Journal contains the proceedings of the House of Representatives of Texas including legislation, reports, discussions, votes, and points-of-order. Some volumes also contain supplementary materials. The index begins on page 2981.

The Journal contains the proceedings of the House of Representatives of Texas including legislation, reports, discussions, votes, and points-of-order. Some volumes also contain supplementary materials. The index begins in Volume 2.