IOS allows the programer to perform formated Input/Output at assembly language level to/from any peripheral device. It runs under DOS versions V8-O8 or V9-19, reading and writing DOS-compatible files. Additionally, IOS will run, with total transparency, in an environment with memory management enabled. Minimum hardware required is a 16K PDP 11/45, Keyboard Device, DISK (DK,DF, or DC), and Line Frequency Clock. The source language is MACRO-11 (3.3K Decimal Words).

Seventeen papers are presented. Separate abstracts were prepared for all papers for ERDA Energy Research Abstracts (ERA) and for thirteen of the papers for Energy Abstracts for Policy Analysis (EAPA). (LBS)

Included are descriptions of welding methods and joint design, welding equipment, and qualification tests. (DG)

The experimental results of a deuterium bubble chamber photoproduction study of half a million pictures at 5.5 GeV are presented. This experiment has been performed using a monoenergetic and linearly polarized photon beam facility at SLAC. At 5.5 GeV the beam polarization is greater than 90%, and the average FWHM of the beam energy spectrum is 0.6 GeV. The reaction ..gamma..d ..-->.. ..pi../sup +/..pi../sup -/d has been studied in detail. A clear sample of ..gamma..d ..-->.. rho/sup 0/d channel was obtained and from the rho/sup 0/ decay distribution in terms of an extended density matrix which includes correlation with the beam polarization, nine independent density matrix parameters were determined. The study of rho/sup 0/ production and decay in the reaction channel ..gamma..d ..-->.. rho/sup 0/d was found to proceed almost completely through natural parity exchanges; the contribution from unnatural parity exchanges being only (5.3 +- 4.5)% for momentum transfer absolute value t less than or equal to 0.25 GeV/sup 2/. For the rho/sup 0/ mass and width, the values (766 +- 5) and (139 +- 11) MeV, respectively were obtained. The rho/sup 0/ production cross section in this channel has been determined to be (9.1 +- 0.8) ..mu..b.

Fuel performance in the Peach Bottom High-Temperature Gas-Cooled Reactor (HTGR) is reviewed, including (1) the driver elements in the second core and (2) the test elements designed to test fuel for larger HTGR plants. Core 2 of this reactor, which is operated by the Philadelphia Electric Company, performed reliably with an average nuclear steam supply availability of 85 percent since its startup in July 1970. Core 2 had accumulated a total of 897.5 equivalent full power days (EFPD), almost exactly its design life-time of 900 EFPD, when the plant was shut down permanently on October 31, 1974. Gaseous fission product release and the activity of the main circulating loop remained significantly below the limits allowed by the technical specifications and the levels observed during operation of Core 1. The low circulating activity and postirradiation examination of driver fuel elements have demonstrated the improved irradiation stability of the coated fuel particles in Core 2. Irradiation data obtained from these tests substantiate the performance predictions based on accelerated tests and complement the fuel design effort by providing irradiation data in the low neutron fluence region.

The gain of thermonuclear pellets containing a pusher-tamper of high density high-Z material surrounding the DT fuel is considered. Other significant characteristics of such capsules are briefly mentioned. (MOW)

The thermocurrent properties of the V/sub k/ center in CaF/sub 2/ were investigated. The thermocurrent properties during irradiation as a function of temperature indicate that the number of V/sub k/ centers produced per Roentgen decreases with increasing temperatures. The V/sub k/ lifetime and activation energy were determined.

The environmental effects of this conceptual design were evaluated and found to be little different from other electrical power plants in most regards. Exceptions include a very small release of tritium, a low-hazard isotope, and relatively large amounts of radioactive material which must be either stored on site for eventual reprocessing or permanently discarded. These radioactive materials are nonvolatile and should not pose a difficult disposal problem, although some of the material may remain radioactive for hundreds of years. Natural resources required to build and operate the reference plant are not excessive except perhaps in the case of niobium and beryllium. The accident, sabotage, etc., problems of the plant are very minimal and although accidents can be postulated which would be inconvenient and costly within the plant, the probability of sizable impact on the surroundings is so as to be incredible.

Reported are: N-type material development (gadolinium selenide compositions), TPM-217 P-type material characterization, and couple development. 29 tables, 20 fig. (DLC)

This preliminary report considers all the clusters with n less than or equal to 10 and l less than or equal to 10 on a regular square lattice and uses the representations of the symmetric group to calculate their partition functions as a series in powers of the reciprocal temperature 1/T up to twentieth order. The contribution of these clusters to the free energy are computed for the infinite regular square lattice in zero external magnetic field. The contribution of the external field can be calculated exactly to any desired power in the reciprocal temperature. This calculation is carried out for the linear lattice. The complete contribution to twentieth order for an infinite square lattice must include graphs that cover remaining clusters up to n = 20 and l = 20. The contributions of these graphs will be found in a subsequent publication. However, the expression for the linear lattice is complete. It should be mentioned that the computations are completely free of rounding errors. 4 figs., 3 tables.

A summary of research work at Rensselaer Polytechnic Institute undertaken in the period November 1958 to June 1974 is reported. Also included are a description of the facility, listings of research projects and publications, and identification of personnel. (SDF)

Progress is reported for a program to demonstrate by 1976 an experimental gas turbine powered automobile which meets the 1976 Federal Emissions Standards, has significantly improved fuel economy, and is competitive in performance, reliability, and potential manufacturing cost with the conventional piston engine powered, standard size American automobile. Baseline engines 5, 6, and 7 were built. Action to correct a 7 percent power deficiency is underway. Two baseline vehicles are operational, with the third ready for engine installation. Measurement of baseline performance and emissions is in process. NASA Lewis has their baseline engine installation operational. They are also assemblying a cold flow power turbine test rig and have made substantial progress in defining upgraded engine aerodynamics. A study was made of sizing the upgraded engine for a compact size vehicle. Chrysler's proprietary linerless insulation was installed into the endurance engine. Evaluation was delayed by a power turbine section failure. Substantial progress was made in Chrysler's proprietary low emissions burner program. Preparations are being made to evaluate the Solar burner. Evaluation of ceramic regenerator cores are in process. A seal development program was initiated. AiResearch has most of the integrated control system preprototype elements defined, and has many key elements under …

None

The significant geothermal resource in Texas consists of enormous reservoirs of hot, geopressed water, which formed along the Gulf Coast when water-laden sediments were deposited between surrounding impermeable features, so that the water which would otherwise have been forced out of the sediments was unable to escape. These deposits exist under tremendous pressure created by the weight of the overburden. A geopressure source absorbs heat indirectly, because the geopressured deposits create an insulating barrier that traps and absorbs the thermal energy of the underlying magma. The water from a geopressure source will not be as hot as water from a dry steam or wet steam source, but the quantity available is enormous, and the water pressure itself would be an additional energy source along with the thermal energy. The water may be fresh, or nearly so, and it will contain significant amounts of recoverable methane gas in solution. It may be possible to utilize the water pressure, thermal energy, and the methane gas to generate electricity in small power plants at the recovery site, and the water that has been passed through the turbines and heat exchangers may be a valuable by-product in itself, depending on its quality and regional …

Aspects of an inertial-confinement, fusion reactor that uses an energy release {approx gt}10{sup 11} joules are discussed. The large energy release makes possible direct conversion of the fusion neutrons' energy after nuclear heating of an evaporated blanket to the plasma state. Surface damage by charged particles is avoided and structural damage by neutrons is alleviated. Complex fuel assemblies and other expandable parts may be used as a result of the high monetary value of the energy release.

This report contains the final technical analysis of the Project Independence Interagency Geothermal Task Force chaired by the National Science Foundation. The potential of geothermal energy, resources, fuel cycles, and the status of geothermal technology are outlined. Some constraints inhibiting rapid and widespread utilization and some Federal actions to remove utilization barriers are described. (MOW)

This report describes field geological and geophysical investigations of the Marysville geothermal area, including geological mapping, sample collection, a ground total field magnetic survey, gravity survey, seismic ground noise survey, microearthquake survey, and heat flow study. Although sufficient data are not available, it is likely that a magma chamber is the heat source. A second section, ''Contemporary Seismicity in the Helena, Montana, Region'' examines the coincidence of high heat flow and earthquake swarm activity in this region. (GRA)

The Intel 8080 CPU simulator program (MCS80SIM) provides a software simulation together with simulator execution commands to aid in program development for the MCS-80. Besides accepting 8080 machine code the simulator allows manipulation of the simulated memory and 8080 registers, breakpoint insertion, program tracing, symbolic and numeric dumps, single stepping, and other operations during the simulation. This report details how the simulator (MCS80SIM) is accessed and how it is run on the Octopus network at LLL. 2 figures. (RWR)

The d-c sounding survey confirms the presence of a large conductive section of sedimentary and volcanic rocks underlying the low-resistivity AMT anomaly defined by Hoover. Within the conductive section, resistivity boundaries between sedimentary rocks of the Idaho Group, the Banbury Basalt, and Idavada Volcanics appear to be entirely obscured, at least where well data are available. True resistivities near these contacts range from about 3 to 5.5 ohm-m, about 3 to 10 times less than would be expected for similar volcanic rock types saturated with fresh water. Because water samples from wells in the Bruneau-Grand View area are relatively fresh, the greatly decreased resistivities are probably related to a combination of thermal waters and alteration within the volcanic rocks and perhaps also within part of the sedimentary section. The d-c soundings trace the low resistivity zone beyond the limits of the AMT survey to the east as far as the town of Hammett, where a zone of 4.4 ohm-m material 640 m thick is present. To the west the conductive section terminates about 5 km east of Oreana, where truncation of the conductive section appears to be related to decreasing lateral porosity. The 1 to 7 ohm-m conductive section can …

Progress is reported for a program to demonstrate by 1976 an experimental gas turbine powered automobile which meets the 1976 Federal Emissions Standards, has significantly improved fuel economy, and is competitive in performance, reliability, and potential manufacturing cost with the conventional piston engine powered, standard size American automobile. All of the baseline vehicles are now operational and are performing Program tests. Vehicle tests completed in this quarter include noise reduction, heater, air conditioning, and underhood temperature evaluations. Testing was completed on the original endurance engine. Test cell evaluation of the government furnished combustor (Solar) has commenced. Vendor A and Vendor B ceramic regenerator cores were rig tested with an improved elastomeric drive. Vendor A cores with the elastomeric drive are being engine tested. Ceramic regenerator seal wear test rig results are showing promise of achieving a low friction, non-nickel-oxide rubbing surface. The first preprototype integrated control system was delivered and placed in operation on a baseline engine in a test cell. Six ribbed compressor turbine wheels made of IN 792/Hf by the AiResearch Airefrac process were received. Rig testing of the variable inlet guide Vanes was completed and engine testing initiated. Vehicle evaluations of the torque converter lock-up were completed …

In studying the dynamic response of fluid filled cylindrical shells to large internal pressure pulses, it would be advantageous to have a rapid method of computing the final deformed shape of the shell. In treating the dynamic response of liquid metal heat transport system to pressures generated by large sodium/water reactions, determinations of the structural response of various components is only a fraction of the information required to describe the entire event. The problem treated in this report is an initial investigation of the value of correlation parameters for removing the effect of pulse shape on predicted plastic deformation. It is an attempt to extend previous studies by inclusion of elastic/plastic response rather than limiting the model to a rigid/plastic description. Since many of the pressure pulses of interest in piping system analysis do not involve pressures that produce large plastic deformation, it is necessary to include the effect of elastic response. A simple bilinear elastic/strain hardening model was thus chosen for this study. The dynamic response of a bilinear thin ring to various spacially uniform pressure pulses is analyzed. Solutions have been obtained for rectangular and for linear and exponentially decaying pulses. Numerical procedures have been employed to obtain …

A method for measuring the rate of leaching of /sup 137/Cs from cement grouts was investigated as an alternate to the International Atomic Energy Agency (IAEA) method which requires long experimental times. The effects of curing time (10, 20, and 30 days) and the type of leachant (tap and saline water) on the amount of /sup 137/Cs leached were studied. Mathematical models for mass transport phenomena for both finite cylindrical geometry and a semi-infinite medium were developed to analyze the data. It was found that the models for diffusion of /sup 137/Cs with depletion of the species due to curing provided the best correlation of the data. The proposed method was found to give values of the mass transport coefficients within a factor of 2 to 10 of the IAEA test results. Diffusion coefficients were found to be in the range of 10/sup -9/ to 10/sup -11/ cm/sup 2//sec and depletion rate constants in the range of 10/sup -6/ to 10/sup -8/ sec/sup -1/.

A description of the Marysville site is given. The drilling program, an environmental analysis, and a survey of geophysical surveys are described. A preliminary survey is presented of the area using aerial thermal infrared imaging techniques. (MOW)

The 8080 Macro Assembler is now available on the LLL 7600 system. This report is a user's manual for executing the 8080 assembler on the 7600 computers. The MCS80 program accepts as input programs written in Intel 8080 CPU assembly language. The program writes a magnetic tape in Intel BNPF format or BIN DEC binary format which can be used to punch a paper tape. 3 figures. (RWR)