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Cerenkov radiators for photodiodes

Description: Several materials have been examined for use as Cerenkov converters in front of photodiodes in an effort to find a gamma detector system that has more sensitivity than a Compton detector but makes little sacrifice in bandwidth. Suprasil (fused silica) and UVT Lucite (acrylic) were 10-100 times more sensitive than a Compton detector and provided almost the same bandwidth. Barium fluoride provided almost 1000 times the sensitivity, but with a factor of 3 or 4 reduction in bandwidth. Relative sens… more
Date: January 1, 1982
Creator: Toevs, J. W.; Young, C. S.; Zagarino, P. A. & Seno, R. D.
Item Type: Refine your search to only Article
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Cerro Prieto geothermal field: exploration during exploitation

Description: Geological investigations at Momotombo included photogeology, field mapping, binocular microscope examination of cuttings, and drillhole correlations. Among the geophysical techniques used to investigate the field sub-structure were: Schlumberger and electromagnetic soundings, dipole mapping and audio-magnetotelluric surveys, gravity and magnetic measurements, frequency domain soundings, self-potential surveys, and subsurface temperature determinations. The geochemical program analyzed the ther… more
Date: July 1, 1982
Item Type: Refine your search to only Report
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Cesium Chloride Compatibility Testing Program. Annual Report, Fiscal Year 1982

Description: A program was started in FY 1982 to evaluate the compatibility of WESF-produced CsCl with 316 L stainless steel under the thermal conditions that would be encountered in a geologic repository. The program is funded through the Long-Term High-Level Defense Waste Program of the Department of Energy. The major part of the program involves compatibility testing of six standard WESF CsCl capsules at a maximum CsCl/metal interface temperature of 450/sup 0/C. The capsules are allowed to self-heat to t… more
Date: December 1, 1982
Creator: Fullam, H. T.
Item Type: Refine your search to only Report
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Changing MFTF vacuum environment

Description: The Mirror Fusion Test Facility (MFTF) vaccum vessel will be about 60m long and 10m in diameter at the widest point. The allowable operating densities range from 2 x 10/sup 9/ to 5 x 10/sup 10/ particles per cc. The maximum leak rate of 10/sup -6/ tl/sec is dominated during operation by the deliberately injected cold gas of 250 tl/sec. This gas is pumped by over 1000 square meters of cryopanels, external sorbtion pumps and getters. The design and requirements have changed radically over the pas… more
Date: August 19, 1982
Creator: Margolies, D. & Valby, L.
Item Type: Refine your search to only Article
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Changing MFTF vacuum environment

Description: The Mirror Fusion Test Facility (MFTF) vacuum vessel will be about 60m long and 10m in diameter at the widest point. The allowable operating densities range from 2 x 10/sup 9/ to 5 x 10/sup 10/ particles per cc. The maximum leak rate of 10/sup -6/ tl/sec is dominated during operation by the deliberately injected cold gas of 250 tl/sec. This gas is pumped by over 1000 square meters of cryopanels, external sorption pumps and getters. The design and requirements have changed radically over the pas… more
Date: December 1, 1982
Creator: Margolies, D. & Valby, L.
Item Type: Refine your search to only Article
open access

Changing Western water institutions: energy's role

Description: This paper describes the institutional mechanisms through which physical availability of water, historical pattern of water use, and unresolved water issues combine to constrain and channel the energy industry's use of water. These institutional mechanisms include the developing markets for water rights, the legal and administrative structure governing water allocation, the formation of social attitudes about water, and the political process that often implements concensus. Within this context,… more
Date: January 1, 1982
Creator: Brown, F.L. & Roach, F.
Item Type: Refine your search to only Report
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The Changing World of Financial Intermediaries and Related Institutions: Survey of Major Developments and Their Implications for Public Policy

Description: Inflation, high and variable interest rates, and new electronic technology have had a profound impact on financial institutions throughout the world. This report surveys how the various kinds of financial institutions in the United States have been affected by these developments, how they have reacted, what major legislative action has been taken, and what policy issues remain.
Date: December 30, 1982
Creator: Allen, Julius W.
Item Type: Refine your search to only Report
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Characteristics of A-150 plastic-equivalent gas in A-150 plastic ionization chambers for p(66)Be(49) neutrons

Description: The evaluation of a gas mixture having an atomic composition similar to that of A-150 TE-plastic has been extended to a high energy neutron therapy beam. A-150 gas, air and methane-based TE gas were each flowed through A-150 plastic-walled ion chambers of different sizes and irradiated with p(66)Be(49) neutrons. A tentative value for anti W(A-150) of 27.3 +- 0.5 J C/sup -1/ was derived for this beam. The anti W value of the A-150 gas mixture is compared to those of methane-based TE gas and of a… more
Date: July 8, 1982
Creator: Awschalom, M.; Rosenberg, I.; Ten Haken, R. K.; Pearson, D. W.; Attix, F. H. & DeLuca, P. M.
Item Type: Refine your search to only Report
open access

Characteristics of American coals in relation to their conversion into clean-energy fuels. Final report. [1150 samples of US coals]

Description: To further characterize the Nation's coals, the Penn State Coal Sample Bank and Data Base were expanded to include a total of 1150 coal samples. The Sample Bank includes full-seam channel samples as well as samples of lithotypes, seam benches, and sub-seam sections. To the extent feasible and appropriate basic compositional data were generated for each sample and validated and computerized. These data include: proximate analysis, ultimate analysis, sulfur forms analysis, calorific value, macera… more
Date: June 1, 1982
Creator: Spackman, W.; Davis, A.; Walker, P. L.; Lovell, H. L.; Vastola, F. J.; Given, P. H. et al.
Item Type: Refine your search to only Report
open access

Characteristics of light-ion-beam fusion systems

Description: The conditions for light ion beam fusion are extreme, involving large energies and short times, and the diagnostics needed for experiments are generally very different from those in other fusion fields. The only closely related field is that of laser fusion where the energies are smaller, but the times are even shorter. Typical particle beam fusion conditions require powers densities of the order of 10/sup 14/ watts/cm/sup 2/ on targets of 5 to 10 mm diameter. The beam pulse should be about 10 … more
Date: January 1, 1982
Creator: Mendel, C.W. Jr.
Item Type: Refine your search to only Article
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Characteristics of the new MPS II spectrometer system

Description: The BNL MPS II is a conversion of the spark chamber detector system of MPS I to a narrow drift space novel drift chamber system. A description is given of this very compact drift chamber system in which the electronics for individual channels is mounted on the chamber. Under actual experimental operating conditions, the chamber shows high resolution of approx. = 200 microns, are dead-time free, and yielded excellent performance. The digital electronics used eliminates channel-by-channel correct… more
Date: January 1, 1982
Creator: Etkin, A.; Foley, K. J. & Longacre, R. S.
Item Type: Refine your search to only Article
open access

Characteristics of the WNR: a pulsed spallation neutron source

Description: The Weapons Neutron Research facility (WNR) is a pulsed spallation neutron source in operation at the Los Alamos National Laboratory. The WNR uses part of the 800-MeV proton beam from the Clinton P. Anderson Meson Physics Facility accelerator. By choosing different target and moderator configurations and varying the proton pulse structure, the WNR can provide a white neutron source spanning the energy range from a few MeV to 800 MeV. The neutron spectrum from a bare target has been measured and… more
Date: January 1, 1982
Creator: Russell, G. J.; Lisowski, P. W.; Howe, S. D.; King, N. S. P. & Meier, M. M.
Item Type: Refine your search to only Article
open access

Characteristics of thermoluminescence glow curves for materials exhibiting more than one glow peak

Description: The properties of thermoluminescence glow curves, containing one or more glow peaks, have been determined for situations where the assumptions invoked to obtain the usual first and second order kinetics do not apply. First order kinetics occurs only when retrapping is negligible. If more than one glow peak is present and retrapping occurs between different types of traps the glow peaks can be approximated, except in the wings, by the usual first and second order expressions; but often physicall… more
Date: January 1, 1982
Creator: Levy, P.W.
Item Type: Refine your search to only Article
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Characteristics of Urban Runoff from Grange Hall Creek at Northglenn, Adams County, Colorado

Description: Purpose: The purpose of the study was to (1) determine quantity and quality of urban runoff from the upper Grange Hall Creek drainage basin in Northglenn; (2) identify constituents exceeding water-quality standards for agricultural waters; (3) compare differences in quality between dry-weather flow, snowmelt runoff and rainfall runoff; (4) determine rainfall-runoff relationships; (5) investigate relationships between constituent concentrations, specific conductance, and streamflow; and (6) sugg… more
Date: 1982
Creator: Hall, Dennis C. & Duncan, A. C.
Item Type: Refine your search to only Report
open access

Characterization methods for ultrasonic test systems

Description: Methods for the characterization of ultrasonic transducers (search units) and instruments are presented. The instrument system is considered as three separate components consisting of a transducer, a receiver-display, and a pulser. The operation of each component is assessed independently. The methods presented were chosen because they provide the greatest amount of information about component operation and were not chosen based upon such conditions as cost, ease of operation, field implementat… more
Date: July 1, 1982
Creator: Busse, L. J.; Becker, F. L.; Bowey, R. E.; Doctor, S. R.; Gribble, R. P. & Posakony, G. J.
Item Type: Refine your search to only Report
open access

Characterization of Climax granite ground water

Description: The Climax ground water fails to match the commonly held views regarding the nature of deep granitic ground waters. It is neither dilute nor in equilibrium with the granite. Ground-water samples were taken for chemical analysis from five sites in the fractured Climax granite at the Nevada Test Site. The waters are high in total dissolved solids (1200 to 2160 mg/L) and rich in sodium (56 to 250 mg/L), calcium (114 to 283 mg/L) and sulfate (325 to 1060 mg/L). Two of the samples contained relative… more
Date: August 1, 1982
Creator: Isherwood, D.; Harrar, J. & Raber, E.
Item Type: Refine your search to only Report
open access

Characterization of initiation and detonation by Lagrange gage techniques. Final report

Description: The theoretical work in this report is concerned with a reactive flow Lagrange analysis (RFLA) for shocked explosives that was formulated and developed at SRI International and Lawrence Livermore National Laboratory (LLNL). This RFLA takes a set of Lagrange particle velocity and pressure histories recorded in shocked explosive as input and calculates the flow fields in the explosive and its global rate of decomposition. A similarity solution modeling a type of initiation observed in PBX9404 and… more
Date: January 1, 1982
Creator: Cowperthwaite, M.
Item Type: Refine your search to only Report
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Characterization of Kevlar 49 fibers by electron paramagnetic resonance. Final report, 20 May 1981-20 June 1982. [Radicals induced by ultraviolet or fracture]

Description: EPR was used to investigate the free radicals created in Kevlar 49 fibers by stress-induced and photo-induced macromolecular chain scissions. Mn/sup +2/ ions were identified from the EPR spectrum of frozen solutions of concentrated sulfuric acid containing Kevlar 49. Other ions present are Cu/sup +2/, and possibly Fe/sup +3/, Cr/sup +3/, and Ti/sup +3/. EPR lineshape anisotropy indicates that some of the metal ions and first coordinate spheres are oriented. The concentration of stress-induced r… more
Date: June 20, 1982
Creator: Brown, I.M. & Sandreczki, T.C.
Item Type: Refine your search to only Report
open access

Characterization of Radon Levels in Indoor Air

Description: The purpose is to describe the different types of monitoring and sampling techniques that can determine the radiation burden of the general public from radon and its decay products. This is accomplished by measuring the range and distribution of radon and radon decay products through broad surveys using simple and convenient integrating monitoring instruments. For in-depth studies of the behavior of radon decay products and calculation of the radiation dose to the lung, fewer and more intensive… more
Date: January 1, 1982
Creator: George, A. C.
Item Type: Refine your search to only Article
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