From abstract: An electromechanical automatic count and control unit for a beta-ray spectrometer is described. The count control unit provides for constant or time limited recording of data and actuates an automatic stepping system which sweeps a well regulated motor generator power supply over 100 increments of focusing magnet current.

From abstract: A sweep unit for automatic control of single channel pulse height analyzer bias is described. The unit is linear, stable, and compact enough to be included in most single channel pulse height analyzers. Several applications of the sweep unit to scintillation spectroscopy are described.

Introduction: The investigation of monazite deposits in the southeastern states by the Bureau of Mines and the Geological Survey on behalf on the U.S. Atomic Energy Commission was prompted by the history of past production and the many communications reporting the occurrence of monazite in this area.

From abstract: "The preceding article describes the preparation of a number of alkali carbonates of pentavalent neptunium, plutonium, or americium. The results of x-ray diffraction studies of some of these carbonate precipitates are presented in the present paper. The preparations to be dealt with are the K-Pu(V) (at low pH), NH4-Pu(V) and Rb-Am(V) precipitates which form one iso-structural series. In the case of the other preparations discussed in the preceding article, the x-ray work did not lead to reliable conclusions as to chemical formula and crystal structure."

"In the course of an ultracentrifugal investigation of uranyl fluoride solutions, their densities and refractive indices were measured as a function of concentration. The measurements were carried out near 25 and 30 C and if necessary extrapolated to 25.0 and 30.0 C from the observed temperature coefficients. Most density data were obtained pycnometrically (25 cc samples) and a few gradient tubes. The refractive index measurements were carried out with a Bausch and Lomb dipping refractometer (calibrated with "known" solutions) using sodium-D light. The materials used and the analytical procedures were described earlier. Although the accuracy of the density measurements was approximately one part in 10,000, the accuracy of the determinations at high UO2F2 concentration is considerably less, in view of the uncertainty in the uranium analyses."

The following report examines a conventional grinded ion chamber that is used to measure the energy distribution of fission fragments slowed by a UO2 absorber.

The following report describes and experimental method used to determine equation of state of materials under strong shock. The method was devised of simultaneously measuring the velocity of the shock through a plate, and the velocity of the free surface after the shock has traversed the plate. Further analysis is presented.

From abstract: Experimental simulation of Colorado Plateau type uranium deposits is divided into seven parts. The first three summarize the essential features of geological occurrence for the ores. The last four parts outline the results of experimental investigation arranged according to each geological group of features influencing mode of occurrence.

This report calculates the alpha half-life of americium-243 and reporting a measurement error.

From abstract: The area comprising the first flood plain downstream from the headwaters of Knob Creek was one of three monazite placer deposits near Shelby, N. C., recommended by the Geological Survey for investigation by the Bureau of Mines as a joint effort by the above two agencies. Past production of monazite from the headwaters of this stream and its drainage of an area of known source rocks were factors influencing this selection. Drilling of the deposit was started on November 26, 1951, and completed December 29, 1951. Twenty-two churn-drill holes were completed to bed-rock on 112 acres of this flood plain for a total depth of 433 feet of vertical drilling.

Abstract: "An appropriate method has been applied to predict fast neutron dosimeter data from thermal neutron measurements. Results are compared with actual dosimeter data and it is concluded that the method presented gives a good approximation for fast neutron dose. This is important since in many previous experiments fast neutron dosimeter data had not been taken, but thermal neutron data had been obtained."

The following report analyzes the studies made by Glendenin on the distribution of nuclear charge in slow neutron fission of U-235 ad Pu-239.

The following report discusses the design for the stellarator of Project Matterhorn, including data on its field winding, the vacuum chamber and supporting frame.

From abstract: "The properties of beryllium carbide were studied to determine its suitability as a high-temperature refractory. Various methods of preparing it were tried and a number of the physical and chemical properties of the resulting products were determined."

From abstract: "A compound that is shown to be KAmO₂F₂ is prepared by the addition of a saturated solution of KF to an acid solution of pentavalent americium." The report further discusses the crystal structure, lattice parameters, number of molecules per unit cell, space group, and atomic positions for the compound.

"The objective of the Waste Processing Development Project is to investigate the feasibility of concentrating high-level waste streams to their minimum volume and packaging such waste in containers that are primarily safe and transferable...This report describes experimental and pilot plant development work and enlarges upon two schemes: (1) the concentration of dilute waste solutions to 60 or 70 percent solids slurries in a batch slurry evaporator, removal of the residual water from the waste by evaporation, and fusion in the final waste container; (2) accomplishment of the complete concentration and fusion cycle in one piece of equipment on a continuous basis."

Report discussing the properties of the Hugoniot function, which the author defines by setting the Hugoniot relation equal to zero.

Report discussing the analysis of beta and gamma radiations of U²⁴⁰ and Np²⁴⁰ with a magnetic lens and scintillation spectrometers.

"Hydrodynamic theory predicts that if a shock wave in a metal is not too strong it will separate into two waves." This report discusses a modification of the contactor technique to determine the velocities of the two waves simultaneously for samples of steel and tungsten alloy.

A report about copper-based cladding alloys and the alloying reactions based on these metals. Experiments are done to minimize the risk of melting extrusion billets.

From abstract: "A study is presented of the surface temperature distribution of spherical pellets in a fixed-bed, pellet-type reactor. The temperature near a point of contact is determined experimentally by means of an electrolytic tank analogue. An analytical approach involving the use of the IBM (CPC) calculator is described. Suggestions for further study are included."

A report about Ta-W, Ta-Mo, and W-Mk thermocouples calibrated in a vacuo against a Pt-Pt, 10% Rd couples at temperatures up to 1500°C.

A report about a study of the methods of melting and fabricating the dilute alloys of carbon in thorium. The results of the study are reported here.

Abstract: "The total neutron cross section of normal uranium has been measured for neutron energies from 20 kev to 7.6 Mev and at 17, 19 and 20 Mev. When combined with other published work in the 7-14 Mev range, the result is a smooth cross section curve up to 20 Mev. The curve fits smoothly on the surface showing total neutron cross section as a function of both atomic weight and neutron energy."