From abstract: "The mass spectrum of stannane, SnH4, has been studied. Ion fragmentation patterns for both the singly and doubly charged fragments were obtained employing 70-volt electrons. From appearance potential data, an estimation of the bond energies of the tin-hydrogen bond in the ion-species SnH+3-H, SnH+2-H, SnH+-H, Sn+-H has been made along with [delta]Hf for SnH4. The studies were first made with tin of normal isotopic abundance, and then the results were corroborated with SnH4 prepared with the separated isotope 120Sn."

Abstract: "Abnormally short interatomic distances are characteristic of aluminum-transition element compounds which occur at the aluminum-rich ends of the phase diagram." Summary: "The theoretical model assumed in this investigation was that of spherical distribution of electrons centered about atomic sites in the V4Al23 structure, represented by the theoretical scattering factors for the isolated atoms. ...It is evident from the (Fo-Fc)-synthesis maps that too much scattering power has been assumed in the immediate vicinity of each atomic site since the negative regions associated with these sties represent electron density differences which are generally two to three times greater than the estimated experimental errors. ...An estimate of the number of electrons associated with the positive regions in the (Fo-Fc)-synthesis maps, and presumably the number of electrons participating in the bonding, could be obtained by computing structure facts with theoretical scattering factors which account for the contributions of the core electrons only. An (Fo-Fc)-synthesis with these Fc values and the Fo values from this investigation should then approximate the actual distribution of the outer electrons."

This report provides a broad and in depth discussion of bismuth, discussing the properties of bismuth--including physical, electrochemical, and chemical properties. It then discusses the processes by which bismuth is detected and how bismuth can be separated and isolated, with discussions of dissolution, precipitation, and extraction.

This report undertakes research to study LiCuCl3-2H2O is from a structural standpoint, revealing the oxygen positions. The study uses the Levy-Bussing anisotropic temperature factor treatment and least squares program to determine a discrepancy factor for the visually determined intensities. The structure of the molecule is also found to have interesting magnetic properties which has inspired a new study at Brookhaven.

This report describes the method and research that led to the development of a "new type of mechanical seal for a high-voltage, vacuum pass-through...for use in a general utility 60º sector mass spectrometer." (From introductory paragraph)

From abstract: "The nuclide Be7 has been produced by photoactivation of Be9, B and C12 using the bremsstrahlung beam of an electron synchrotron operated at 45 Mev. Integrated cross sections for the formation of Be7 have been estimated by comparison with the Ta181([gamma],n)Ta180m reaction. The reaction C12([gamma],2p3n)Be7 has also been observed in irradiations at 30, 35 and 40 Mev maximum energy. Its yield has been compared with that of the C12([gamma],n) reaction at 45 Mev. The reaction A127([gamma],2p3n)Na22 was observed at 45 Mev."

From abstract: "Over-all mass transfer coefficients were determined by considering the operation of the pulse column to be a stage-wise process. The area for mass transfer was obtained by direct photographic measurements...The mass transfer coefficient was found to increase when the interfacial tension was reduced..."

From abstract: "The Hall mobilities of germanium single crystals were measured with a microwave frequence of 9000 Mc/sec over the temperature range 30°K to 300°K. A rectangular sample occupied the central part of the wall of a rectangular cavity, which was doubly generate in the TE101 mode and in the TE011 mode at a single resonance microwave frequency. The external magnetic field and microwave field associated with one of the two modes gave rise to the other mode of oscillation, owing to excitation by the microwave Hall field. The theoretical analysis was verified by measurements on an n-type sample having a room temperature resistivity of 0.40 ohm cm. The measured Hall mobility at microwave frequencies (with a size correction) was compared with the D.C. Hall mobility between 30°K to 300°K. The maximum discrepancy was 15%. The estimated experimental error in the microwave measurement was 16%. The magnetic field dependence of the microwave Hall mobility in a p-type sample, having a room temperature resistivity of a 0.77 ohm cm, was in qualitative agreement with the D.C. results obtained by Willardson et al."

From abstract: "The Seebeck coefficient (thermoelectric power) has been measured from 7°K to 1000°K for both n-type and p-type single crystals of Mg2Si...The phonon contribution, Sp, was obtained from the measured Seebeck coefficient by subtracting off the electron diffusion term, Se, which was calculated with the aid of the measured Hall coefficient. The magnitude of Sp was observed to be proportional to T-3 and to show the dependence on sample size and on carrier concentration predicted by the theory of C. Herring..."

This report provides a detailed discussion of the analytical chemistry of cobalt, including an introduction, the properties of cobalt, the sampling of cobalt-bearing materials, the separation and isolation of cobalt, the detection and identification of cobalt, the determination of cobalt, and the specific methods for determining cobalt.

This report discusses the structure of stannous chloride along with tables and figures detailing findings.

This technical report details a process by which ion exchange was used for separation of rare earth metals in a highly pure form. Two techniques for resolving mixtures are described: ion-exchange elution chromatography and ion-exchange displacement chromatography.

From introductory paragraph: "A study of the ionization efficiency of the positive ions derived from chromyl fluoride and chromyl chloride as a function of the electron energy has been reported."

From introductory paragraph: "The factors which control the properties, and hence the utility, of an alloy are microscopic in nature. These factors are controlled by controlling the composition and past history of the material. control of the composition of the alloy determines for the most part the number and types of phases which will be present, while control of the past history of the alloy determines the grain size and degree of crystalline perfection within the grains. Since the electrical, mechanical, and many of the physical properties of a metal are highly sensitive to the degree of crystalline perfection, it is worthwhile to explore the nature and role of crystalline imperfections."

From summary: "A proposed metallurgical procedure for reporocessing Th-U233 fuel has been outlined. Some basic experimental data pertinent to the proposed process which has been published elsewhere has been reviewed and some new data presented. In the dissolution of thorium-uranium alloy in magnesium the data show that protactinium precipitates with the uranium and cerium remains in the magnesium-rich solution. It is expected that yttrium, other light rare earth elements, the alkali and alkaline earth metals will also concentrate in the magnesium-rich solution while iron, chromium, zirconium, molybdenum, niobium and the more noble metals will concentrate in the uranium-rich phase."

From abstract: "The beta spectrum of Na22 has been examined using an intermediate-image beta-ray spectrometer operating at 2 1/2% transmission and 2.4% resolution. Five separate determinations of the maximum energy and of the slope of the form-factor plot were made. One determination was made using a charge-discriminating baffle inserted in the spectrometer. The unweighted mean of the five values for the maximum energy is 547.4 ± 1.0 kev. The unweighted mean of the five values for the form-factor slope is 0.023 ± 0.006 1/mc2."

This report discusses the experiments undertaken to determine the crystal structures of the intermediate phases Ni10Zr7 and Ni10Hf7. The report looks at structural determinations, a comparison observed and calculated structure factors for the refined zirconium-rich structure, the refined structural parameters for the stoichiometric Ni10Zr7 phase, a comparison of observed and calculated structure factors for the refined stoichiometric Ni10Zr7 structure, a comparison of observed intensity data and calculated structure factors for the stoichimetric Ni10Hf7 phase, and a comparison of interatomic distances in the zirconium-rich and stoichiometric Ni10Zr7 structures.

From abstract: "The thorium-hydrogen-carbon system was studied by measuring hydrogen equilibrium pressures at various compositions and temperatures. Two compounds, ThC·ThH2 and ThC·2ThH2, were found and characterized. ThC·ThH2 has a hexagonal closest-packed lattice with ao=3.816Å and co=6.302Å. ThC·2ThH2 has a monoclinic lattice with ao=6.50Å, bo=3.80Å, co=10.91Å and β = 119°. The enthalpies of formation for each compound were determined."

From introduction: "...This investigation was originated to explore the possibility of vapor transport of VCl3 by chemical reaction. The reaction first considered was that of VCl3 and bromine which gave a rapid vapor transport of VCl3. Other work on solid solution formation in the system VCl3-VBr3 and transport of VBr3 in bromine developed thereafter."

From abstract: "Bis(di-n-hexylphosphinyl)methane, HDPM, [(C6H13)2P(O)]2CH2, has been studied as an extractant for a variety of metals. HDPM was evaluated as an extractant for uranium(VI) and compared with tri-n-octylphosphine oxide, TOPO, (C8H13)3PO. In nonpolar solvents, HDPM forms a polymeric-like substance with compounds of uranium(VI). Viscosity measurements indicate that the molecular weight of this polymeric-like substance is about 100 times greater than the corresponding complex with TOPO. Polymer formation occurs only when nonpolar solvents are used as diluents for HDPM and is easily avoided by using polar solvents such as 1,2-aichlorobenzene. HDPM forms 1:1 and 2:1 complexes with uranium(VI) nitrate. Equilibrium constants for these complexes as well as that for the 2:1 TOPO complex were calculated and it was shown that the over-all constant is at least ten times larger for the HDPM complex than for the TOPO complex. The effect of concentration of various mineral acids, extractant concentration, temperature, and diluents on the extraction of uranium are discussed."

From abstract: "To investigate the deviation of the internal conversion coefficients of E2 transitions from theoretical computations and their dependence on nuclear deformation, the total internal conversion coefficient of the 121.8-kev 2+-0+ transition in ellipsoidal Sm152[over]90 was measured to be 1.135 ± 0.010 with a high accuracy coincidence-sum method. The K-shell to total internal conversion ratio was determined to be 0.588 ± 0.003 with a [beta] spectrometer...The experiment revealed no deviation from theory nor indications of strong dependence on nuclear deformation; it therefore did not confirm recent beliefs in this regard. The details of the coincidence-sum method were described. The K electron to total electron capture ratio, from Eu152 to the 1.53 Mev state in Sm152 was also measured to be 0.79±0.02."

Technical report describing and evaluating the the three experimental methods for obtaining equation of state data at low temperatures; (1) approximate measurement of the PVT relationship by a piston-displacement technique, (2) the measurement of a heat capacity at constant volume as a function of molar volume and temperature, and (3) direct measurement of the pressure variation of the elastic constants using ultrasonic techniques. X-ray methods also might be applicable.

From abstract: "Recently a general chemical method for the analysis of mixtures of alcohols appeared, using pyridine catalyzed acetylation and second order kinetics to determine the amount of the faster reacting component. The use of 0.25M isobutyric anhydride in pyridine containing 0.0025M perchloric acid as catalyst promotes the rate of the reaction and diminishes the time necessary to perform an analysis. A mathematical treatment of the data and kinetic plot reduces the number of kinetic points to only four or five. The mixtures are primarily composed of isomers."

From abstract: "Isotopic assays have been made on the chromium in samples from fourteen different chrominiferous minerals from different geographic and meteoritic sources. The results of the assays indicate that it is not possible to unequivocally state that variations in isotopic compositions have been observed."