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open access

1024-channel portable gamma-ray spectrometer

Description: An instrument is described which is designed to determine radioactive isotope spectra in the field under adverse environmental conditions. The instrument is battery-powered, stores and compares multiple spectra, and performs computations upon the resulting displayed graph. (auth)
Date: November 10, 1975
Creator: McGibbon, A. L.
open access

Analysis of Paraho oil shale products and effluents: an example of the multi-technique approach

Description: Inorganic analysis of solid, liquid and gaseous samples from the Paraho Semiworks Retort was completed using a multitechnique approach. The data were statistically analyzed to determine both the precision of each method and to see how closely the various techniques compared. The data were also used to determine the redistribution of 31 trace and major elements in the various effluents, including the offgas for the Paraho Retort operating in the direct mode. The computed mass balances show that … more
Date: June 10, 1979
Creator: Fruchter, J. S.; Wilkerson, C. L.; Evans, J. C. & Sanders, R. W.
open access

ARAC system

Description: In spite of the remarkable safety record of the nuclear industry as a whole, recent public concern over the potential impact of the industry's accelerated growth has prompted ERDA to expand its emergency response procedures. The Atmospheric Release Advisory Capability, ARAC, is a computer communications system designed to enhance the existing emergency response capability of ERDA nuclear facilities. ARAC will add at least two new functions to this capability: centralized, real-time data acquisi… more
Date: December 10, 1975
Creator: Kelly, M.F. & Wyman, R.H.
open access

Charged-particle magnetic-quadrupole spectrometer for neutron induced reactions

Description: A spectrometer has been developed for measuring the charged particle production cross sections and spectra in neutron-induced reactions. The spectrometer consists of a magnetic quadrupole doublet which focuses the charged particles onto a silicon surface barrier detector telescope which is 2 meters or more from the irradiated sample. Collimators, shielding, and the large source-to- detector distance reduce the background enough to use the spectrometer with a 14- MeV neutron source producing 4 .… more
Date: December 10, 1975
Creator: Haight, R. C.; Grimes, S. M.; Tuckey, B. J. & Anderson, J. D.
open access

Computer simulation of temperature-dependent equilibrium precipitation

Description: The EQ3/EQ6 software package contains two computer codes (EQ3 and EQ6) and data files which form a useful tool in modeling precipitation from geothermal fluids caused by heating or cooling. The data files contain information on 140 aqueous species and nearly 150 minerals, and permit calculations over the temperature interval 0 to 350/sup 0/C. Assumption of homogeneous thermodynamic equilibrium in aqueous solution permits calculation of the driving forces for precipitation as measured by the aff… more
Date: July 10, 1979
Creator: Wolery, T.J.
open access

Corrosion and ESCA studies of uranium after exposure to an RF discharge

Description: Corrosion of uranium in O/sub 2/ or H/sub 2/O atmospheres can be inhibited by first oxidizing the surface and then exposing it to organic vapors at temperatures near 400/sup 0/C. There is evidence that a polymeric material is formed on the surface and that it may be responsible for the corrosion inhibition. Polymer coatings can also be prepared using an RF discharge. This paper describes experiments in which uranium surfaces were exposed to an RF discharge and then evaluated as to their corrosi… more
Date: February 10, 1977
Creator: Happe, J. A.; Colmenares, C. A.; McCreary, T. & Somorjai, G. A.
open access

Design for the magnetic field requirements of the tandem mirror experiment

Description: The tandem mirror magnetic geometry is described, followed by an analysis of the magnet set designed to meet the requirements of the TMX experiment. The final magnet line-up is composed of a baseball coil with two C coils for each plug, six solenoidal coils for the central cell, and two RC coils plus one octupole coil for each transition.
Date: October 10, 1977
Creator: Chen, F. K.; Chargin, A. K.; Denhoy, B. S. & Waugh, A. F.
open access

Determination of the pr of laser fusion targets using the. cap alpha. -particle TOF technique

Description: A computer code was written to describe the alpha particle energy loss. The problem of a symmetric compression of the DT gas by an exploding microsphere is analyzed. The code calculates the energy spectrum of a Gaussian distribution of alpha particles after passing through the compressed gas and the exploded glass. The calculations are being used to determine design parameters for diagnostic instruments for measuring charged particle energy distributions from laser fusion targets. (MOW)
Date: October 10, 1975
Creator: Slivinsky, V. W.; Lent, E.; Shay, H. D. & Manes, K. R.
open access

Diffraction dissociation in 205 GeV/c $pi$$sup -$p two- and four-prong interactions

Description: From meeting of the division of particles and fields; Berkeley, California, USA (13 Aug 1973). Data are presented on diffraction dissociation in pi /sup -/p yields pi /sup -/p and pi /sup -/p yields pi /sup -/ pi /sup - / pi /sup +/p interactions at 205 GeV/c. Mass spectra and cross sections for pion dissociation and nuclear dissociation are presented. (LBS)
Date: August 10, 1973
Creator: Abrams, G. S.; Bingham, H. H. & Chew, D. M.
open access

Diffusion due to a single wave in a magnetized plasma

Description: Hamiltonian methods are used to study the motion of a particle in the field BZ and a single electrostatic wave. The particle motion is studied by numerically integrating the equations of motion. Diagrams of various particle trajectories are given. (MOW)
Date: May 10, 1976
Creator: Smith, G. R. & Kaufman, A. N.
open access

Effect of component performance perturbations on the efficiency of injection of neutral beams into thermonuclear reactors

Description: From 5th symposium on engineering problems of fusion research; Princeton, New Jersey, USA (6 Nov 1973). The effect of component performance perturbations on the efficiency of injection of neutral beams into thermonuclear reactors is discussed for a specific type of a neutral beam injector. Based on the model chosen, which includes using direct conversion of the unneutralized portions of the ion beam and recovery of the losses from each element of the injector system, quantitative effects of com… more
Date: October 10, 1973
Creator: Hovingh, J.
open access

Effects of fill pressure and pulse simultaneity on the laser driven implosion of dt filled glass microshells

Description: This paper discusses a series of experiments performed with the LLL two-beam laser system, JANUS. The JANUS laser is capable of focusing approximately 500 Gigawatts of 1.06 ..mu.. power (40 J in 80 psec) on laser fusion type targets. In these experiments, the targets were deuterium tritium (DT) filled glass microshells with aspect ratios of 100 to 200. Targets of this type operate in what is commonly called the exploding pusher mode. The result is that the glass shell surrounding the DT gas (th… more
Date: October 10, 1975
Creator: Storm, E.; Holzrichter, J. F.; Ahlstrom, H. G.; Speck, D. R.; Swain, J. E.; Coleman, L. W. et al.
open access

Effects of shield impedance, connector resistance, and coaxial inductors on ground noise interference in nuclear reactor instrumentation systems

Description: Electrical noise interference in low-level (approximately 50 ..mu..V), wide band (approximately 15 MHz) flux monitoring systems applied to nuclear reactor control causes safety and reliability problems. Others have shown that one predominant source of noise interference is conduction of currents in instrument cable shields and building conduits. Since these currents produce noise that is similar to signals produced by nuclear detectors, such noise interference reduces the ability of a reactor i… more
Date: February 10, 1976
Creator: Burns, R. S.
open access

EMP protection technology interchange

Description: Investigation and assessment of the potential degrading and destructive effects associated with the nuclear electromagnetic (EMP) phenomena has created a large technological base. This base is indeed quite broad owing to the unique and system-pervasive character of the EMP. One of the aims of an emerging discipline, such as that associated with EMP, is to provide for adequate transfer and integration of the developing technology into the overall engineering community. The needs of the community… more
Date: May 10, 1977
Creator: Martin, L. C.
open access

Enhancement of methane production in the anaerobic digestion of sewage sludges

Description: The effect of powdered activated carbon on stressed anaerobic digesters utilizing a sewage sludge substrate was evaluated. The addition of carbon resulted in increased methanee production and greater process stability. The degree of enhancement appeared to be proportional to carbon concentration over the dose range studied (500-10,000 mg/l). A maximum increase in methane production of about 150% was observed at the highest carbon dose. The effect of 1500 mg/l carbon, 4000 mg/l coal, and 4000 mg… more
Date: May 10, 1978
Creator: Spencer, R. R.
open access

Estimates of time-dependence fatigue behavior of type 316 stainless steel subject to irradiation damage in fast breeder and fusion power reactor systems. [Fluence 1--2. 63 x 10/sup 26/ n/m/sup 2/ (E > 0. 1 MeV/ at 593/sup 0/C]

Description: Cyclic lives obtained from strain controlled fatigue tests at 593/sup 0/C from specimens irradiated to a fluence of 1 to 2.63 x 10/sup 26/ n/m/sup 2/ (E greater than 0.1 MeV) were compared to predictions based on the method of strainrange partitioning. When appropriate tensile and creep-rupture ductilities were employed reasonably good estimates of the influence of hold periods and irradiation damage on the fully reversed fatigue life of type 316 stainless steel could be made. Ductility values … more
Date: July 10, 1978
Creator: Brinkman, C.R.; Liu, K.C. & Grossbeck, M.L.
open access

Estimation of aerosol plutonium transport by the dust-flux method: a perspective on application of detailed data

Description: Two methods of dust-flux measurements are discussed which have been utilized to estimate aerosol plutonium deposition and resuspension. In previous studies the methods were found to be sufficiently detailed to permit parameterization of dust-flux to the erodibility of the soil, and a seventh-power dependency of dust-flux (or plutonium flux) to wind speed was observed in worst case conditions. The eddy-correlation method is technically more difficult, requires high-speed data acquisition, and re… more
Date: December 10, 1976
Creator: Shinn, Joseph H.
open access

Experiments with polymer coated microspheres irradiated by the Shiva laser system

Description: Polymer coated spherical targets have been irradiated by the Shiva laser system in an effort to compress the contained 10 mg/cc DT fuel to super liquid densities. Glass microspheres of 140 ..mu..m ID and 5 ..mu..m wall thickness with polymer coatings 15 ..mu..m to 100 ..mu..m thick have been irradiated with laser pulses of 4 kilojoules in 200 psec FWHM. Target performance was diagnosed with neutron yield measurements, radiochemistry, Argon line imaging, and x-ray imaging techniques. Ball in pla… more
Date: November 10, 1979
Creator: Auerbach, J. M.; Manes, K. R. & Matthews, D. L.
open access

Feasibility studies of thermonuclear neutron capture synthesis of SHE

Description: A variety of thermonuclear neutron sources and neutron capture targets were investigated for their potential of allowing signigicant production of heavy, perhaps superheavy, isotopes. The neutron sources considered range from inertial confinement microexplosives to (underground) macroexplosives. Optimal capture targets appear to be composites containing uranium and protactinium. 1 figure.
Date: April 10, 1978
Creator: Meldner, H.W.
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