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Ames Lab. Studies of Nb--U alloys, phase studies of the U----Z--system and the solubility of U in Zn, are summarized. Argonne National Lab. Phase studies of C -- U systems and Nb--U alloys, the effects of radiation on Mo--U alloys, corrosion and irradiatron of Sr--U systems and Nb--U--Zr alloys are reported. Battelle Memorial lnst. The stabrlit.v and existence range of the intermediate epsilon phase, heat treatment, and radiation damage of U--Zr alloys were investigated. A study of the physrcal properties of Mo--U alloys, U alloys for slug-type fuel elements, low-melting U alloys for reactor fuels is presented. The preparation of Al--U alloys is outlined, and corrosion studies of U--Zr alloys were made. Hanford Atomic Products Operation. A series of experiments covering the testing of irradiated U alloys and the transformation kinetics of Si- -U systems were initiated. Knolls Atomic Power Lab. Irradiation stability and the equilibrium phase diagram of U--Zr alloys, and fission gas diffusion in Al--U alloys are being investigated. National Bureau of Standards. A brief summary of the work on Pt--U alloys is given. Nuclear Metals, Inc. Cladding of unalloyed U with either Zr or zircaloy by coextrusion and the preparation of Si--U systems were reported. Sylvania Electric …

Argonne National Lab. Annealing experiments of highpurity C --U alloys in the gamma region in an Ar atmosphere show that the metal is subject to decarbinization. Fourteen binary U--Pd alloys were prepared and examined. Pd solubility in gamma U is less than 1 wt.% at 890 deg C. Seventeen binary alloys of U-Ru were prepared and examined in the as-cast condition. The corrosion resistance after irradiation of U--Si alloys was tested. Homogeneous U- -Ta alloys have not been obtained. Th-rich U alloys were found to be more stable under irradiation than the best U alloys. The effect of heat treatment on microstructure is being studied as part of the effort to understand the effect of alloying on corrosion resistance in Ti--U alloys. Crystal and corrosion studies on U--Zr alloys are reported. Armour Research Foundation. Small ternary additions were found to greatly affect the transformation characteristics of U-- Nb alloys, and a hardness change was noted for this alloy. Preliminary data for U--Nb--Zr alloy demonstrated a relationship between the strained matrix and the physical properties of the alloy. Battelle Memorial Institute. Phase relationships between the intermediate delta phases of the U--Mo and U--Ti systems were conducted. U--Zr, U--Mo, and U--Nb alloys …

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This is a personal letter to Kenneth Davis, AEC, concerning ORNL reactor activities. Topics covered include: HRP status; the gas-cooled system; molten fluorides; the ANP project; and maritime work.

This issue of the Computer Program Newsletter updates an earlier newsletter (Number 2, September 1979) and focuses on electrical network analysis computer programs. In particular, five network analysis programs (SCEPTRE, SPICE2, NET2, CALAHAN, and EMTP) will be described. The objective of this newsletter will be to provide a very brief description of the input syntax and semantics for each program, highlight their strong and weak points, illustrate how the programs are run at Lawrence Livermore National Laboratory using the Octopus computer network, and present examples of input for each of the programs to illustrate some of the features of each program. In a sense, this newsletter can be used as a quick reference guide to the programs.

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The main goal for the month of June was the characterization of neutral beam heated discharges with the beryllium limiter. The beam injection experiments were begun with 0.53 MW of beam power yielding a total of 0.7 MW with the ohmic power included. At this power level the maximum limiter load was 1.4 kW/cm/sup 2/, and the surface temperature rise was about 300/sup 0/C. In the next step the injected power was raised to 0.83 MW so that the total heating power was about 1 MW. The plasma parameters were I/sub p/ = 116 kA, anti n/sub e/ = 4.10/sup 13/ cm/sup -3/, and B/sub T/ = 1.4 T. The resulting maximum heat flux on the limiters was 2.2 kW/cm/sup 2/, and the corresponding surface temperature rise was 470/sup 0/C. These conditions came very close to the design load of 2.5 kW/cm/sup 2/. At this point the plasma behavior was extensively characterized and documented in terms of density and temperature profiles, impurity content, parameter space, and limiter loads. It was found that the global plasma behavior was very similar to the reference case with the TiC-coated graphite limiters. In both cases the impurity content was dominated by oxygen and carbon, …

Activities at the 88-Inch Cyclotron are discussed. Increased beam time demand and operation of the ECR source and cyclotron are reported. Experimental facility improvements are reported, including improvements to the High Energy Resolution Array and to the Recoil Atom Mass Analyzer, a new capture beamline, development of a low background counting facility. Other general improvements are reported that relate to the facility computer network and electronics pool. Approved heavy nuclei research is briefly highlighted. Also listed are the beams accelerated by the cyclotron. (LEW)

Four individual papers have been cataloged separately. (WRF)

This report discusses the two-stage light-gas gun which was developed by the Super-High-Altitude Research Project (SHARP) is a step toward realizing a launcher that can do this at a fraction of the cost of rockets. The SHARP gun is different from other two-stage designs because it is larger and its launch and pump tube are joined at right angles. This configuration allows the launch tube to point at any angle toward the sky while the pump tube remains horizontal. We have demonstrated that this gun can fire projectiles when the launch tube is in the horizontal position. Dr. Michael M. May who was the Laboratory`s fifth Director (1965--71) and is now a Director Emeritus. Under his directorship, the groundwork was laid for the Laboratory`s Energy Program, environmental science programs, and Laser Program. May remains active in research on arms control, nonproliferation, and cooperative security, and he is doing research and teaching at UC San Diego and at Stanford University. As part of the Laboratory`s 40th anniversary celebration, May was invited to lecture on his views of the changing world and the role of LLNL. In 1992, he participated in an influential National Academy of Sciences study on the reduction of …

The Lawrence Livermore National Laboratory was established in 1952 to do research on nuclear weapons and magnetic fusion energy. Since then, we other major programs have been added including laser fusion, and laser isotope separation, biomedical and environmental science, strategic defense and applied energy technology. These programs, in turn, require research in basic scientific disciplines, including chemistry and materials science, computer science and technology, engineering and physics. In this issue, Herald Brown, the Laboratory`s third director and now counselor at the Center for Strategic and International Studies, reminisces about his years at Livermore and comments about the Laboratory`s role in the future. Also an article on visualizing dynamic systems in three dimensions is presented. Researchers can use our interactive algorithms to translate massive quantities of numerical data into visual form and can assign the visual markers of their choice to represent three- dimensional phenomena in a two-dimensional setting, such as a monitor screen. Major work has been done in the visualization of climate modeling, but the algorithms can be used for visualizing virtually any phenomena.

For the 40-plus years of the Cold War, both the United States and the Soviet Union built up nuclear stockpiles of tens of thousands of weapons. Now, as the Cold War has ended and tensions between the superpowers have subsided, the US faces the task of significantly reducing its nuclear arsenal. Many thousands of nuclear weapons are being removed from the stockpile as a result of recent treaties and unilateral decisions. This issue of Energy and Technology Review describes the Laboratory`s role in the nation`s effort to dismantle these weapons safely and rapidly. The dismantlement of the United States` nuclear weapons takes place at the Department of Energy`s Pantex facility near Amarillo, Texas. The first article in this issue summarizes the Laboratory`s involvement in dismantling Livermore-designed nuclear weapons. LLNL (like Los Alamos) has responsibility for the weapons it designed, from design concept to retirement. In the past, the responsibilities ended when the weapon was retired from the stockpile. Now however, the role has been extended to include dismantlement. The second article reports on an incident that occurred in November 1992, in which the pit of a W48 warhead cracked during dismantlement. The Laboratory was called upon to handle the pit …

This monthly report of research activities at Lawrence Livermore Laboratory highlights three different research programs. First, the Forensic Science Center supports a broad range of analytical techniques that focus on detecting and analyzing chemical, biological, and nuclear species. Analyses are useful in the areas of nonproliferation, counterterrorism, and law enforcement. Second, starting in 1977, the laboratory initiated a series of studies to understand a high incidence of melanoma among employees. Continued study shows that mortality from this disease has decreased from the levels seen in the 1980`s. Third, to help coordinate the laboratory`s diverse research projects that can provide better healthcare tools to the public, the lab is creating the new Center for Healthcare Technologies.

This issue highlights the Lawrence Livermore National Laboratory`s 1993 accomplishments in our mission areas and core programs: economic competitiveness, national security, energy, the environment, lasers, biology and biotechnology, engineering, physics, chemistry, materials science, computers and computing, and science and math education. Secondary topics include: nonproliferation, arms control, international security, environmental remediation, and waste management.

The Lawrence Livermore National Laboratory was established in 1952 to do research on nuclear weapons and magnetic fusion energy. Since then, other major programs have been added, including technology transfer, laser science, biology and biotechnology, environmental research and remediation, arms control and nonproliferation, advanced defense technology, and applied energy technology. These programs in turn require research in basic scientific disciplines including chemistry, and materials science, computing science and technology, engineering and physics. This review highlights two R&D 100 award winning research topics: (1) The world`s fastest digitizer which captures 30 ps transient electrical events, and (2) the MACHO camera system which fully exploits the power of large format digital imagers and integrates into one package the taking and analysis of images at a prodigious rate and the storage and archiving of extensive amounts of data. (GHH)

Two articles are included: the industrial computing initiative, and artificial hip joints (applying weapons expertise to medical technology). Three research highlights (briefs) are included: KEN project (face recognition), modeling groundwater flow and chemical migration, and gas and oil national information infrastructure.

Newsletter distributed to the Low-Level Radioactive Waste Forum members describing current news, policies, and legislation, as well as other information relevant to the management of low-level radioactive waste.

This issue focuses on the Airborne Multisensor Pod System (AMPS) which is a collaboration of many of the DOE national laboratories to provide a scientific environment to research multiple sensors and the new information that can be derived from them. The bulk of the research has been directed at nonproliferation applications, but it has also proven useful in environmental monitoring and assessment, and land/water management. The contents of this issue are: using AMPS technology to detect proliferation and monitor resources; combining multisensor data to monitor facilities and natural resources; planning a AMPS mission; SAR pod produces images day or night, rain or shine; MSI pod combines data from multiple sensors; ESI pod will analyze emissions and effluents; and accessing AMPS information on the Internet.

Newsletter distributed to the Low-Level Radioactive Waste Forum members describing current news, policies, and legislation, as well as other information relevant to the management of low-level radioactive waste.

Newsletter distributed to the Low-Level Radioactive Waste Forum members describing current news, policies, and legislation, as well as other information relevant to the management of low-level radioactive waste.

Monthly publication containing statistical data at state, census division, and U.S. levels regarding "net generation by energy source; consumption, stocks, quantity quality and cost of fossil fuels; and capability of new generating units by company and plant" (p. iii).

Newsletter distributed to the Low-Level Radioactive Waste Forum members describing current news, policies, and legislation, as well as other information relevant to the management of low-level radioactive waste.

Serial publication produced by Lawrence Livermore National Laboratory regarding the institution's research in technology to address concerns about energy, bioscience, and the environment. "Science & Technology Review (formerly Energy and Technology Review) is published ten times a year to communicate, to a broad audience, the Laboratory's scientific and technological accomplishments [...]. The publication's goal is to help readers understand these accomplishments and appreciate their value to the individual citizen, the nation, and the world" (inside cover).