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3-10 keV and 0. 1- to 2-MeV observations of four gamma-ray bursts

Description: Four catalogued ..gamma..-ray bursts that occurred between 79/3/7 and 79/7/31 have been observed over the 3 to 10 keV range by a joint NRL/Los Alamos experiment on the Air Force P78-1 satellite. The bursts were also well observed by members of the interplanetary network. In this paper we present hardness ratios, x-ray/..gamma..-ray luminosity ratios, and time histories. The most significant results presented herein can be summarized as follows: (1) gamma-ray bursters can emit fairly strongly at… more
Date: January 1, 1983
Creator: Laros, J. G.; Evans, W. D.; Fenimore, E. E.; Klebesadel, R. W.; Shulman, S. & Fritz, G.
Item Type: Refine your search to only Article
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3-D resistive MHD calculations for tokamak plasmas: beyond the simple reduced set of equations

Description: Numerical studies of the resistive stability of tokamak plasmas in cylindrical geometry have been performed using: (1) the full set of resistive Magnetohydrodynamic (MHD) equations and (2) an extended version of the reduced set of resistive MHD equations including diamagnetic and electron temperature effects. In particular, the nonlinear interaction of tearing modes of many helicities has been investigated. The numerical results confirm many of the features uncovered previously using the simple… more
Date: January 1, 1983
Creator: Carreras, B. A.; Garcia, L.; Hender, T. C.; Hicks, H. R.; Holmes, J. A.; Lynch, V. E. et al.
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open access

10-GeV heavy-ion collider

Description: This paper presents a brief report on a study for a relativistic heavy-ion collider covering an energy span from 1 GeV on 1 GeV to 10 GeV on 10 GeV. This energy range was selected as most appropriate for exploitation of the baryon-rich region of relativistic nucleus-nucleus collisions. The study was done prior to the Wells College meeting of the NSAC Long-Range Plan Working Group which recommended a collider with tip energy of 30 GeV on 30 GeV. The present work has not been modified to reflect … more
Date: January 1, 1983
Creator: Young, G. R.; Martin, J. A. & Ball, J. B.
Item Type: Refine your search to only Article
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30-MJ SMES system operating experience: November 1982-June 1983

Description: This paper describes performance measurements on the dewar, coil, and cryogenic system for the 30-MJ superconducting magnetic energy storage (SMES) unit that has recently been tested at a Bonneville Power Administration substation in Tacoma, Washington. The cryostat, the world's largest fiber-reinforced plastic, open-mouthed dewar, boils off 12 l/h in accordance with previous calculations. Cyclic losses in the coil, 54 W for +-8.4-MW modulation at 1 Hz, are approximately 50% greater than calcul… more
Date: January 1, 1983
Creator: Schermer, R.I.
Item Type: Refine your search to only Article
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30-MJ Superconducting Magnetic-Energy-Storage Stabilizing System: An Overview

Description: The 30-MJ superconducting magnetic-energy-storage (SMES) system was devised as an alternate means to modulate the Bonneville Power Administration (BPA) Pacific AC Intertie, a part of the Western US Power System, to prevent undamped power oscillations at 0.35 Hz that were observed to be associated with high power transmission. The SMES system was installed at the BPA Tacoma Substation and successfully operated as an experimental device to initiate tests to determine power system dynamics, to inv… more
Date: January 1, 1983
Creator: Roger, J. D.; Boenig, H. J.; Dean, J. W.; Schermer, R. I.; Annestrand, S. A.; Hauer, J. F. et al.
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85,000-GPM, single-stage, single-suction LMFBR intermediate centrifugal pump

Description: The mechanical and hydraulic design features of the 85,000-gpm, single-stage, single-suction pump test article, which is designed to circulate liquid-sodium coolant in the intermediate heat-transport system of a Large-Scale Liquid Metal Fast Breeder Reactor (LS-LMFBR), are described. The design and analytical considerations used to satisfy the pump performance and operability requirements are presented. The validation of pump hydraulic performance using a hydraulic scale-model pump is discussed… more
Date: January 1, 1983
Creator: Fair, C.E.; Cook, M.E. Huber, K.A. & Rohde, R.
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open access

150-kW, 450-MHz gyrocon rf generator

Description: The output-power and conversion efficiency of the Los Alamos gyrocon were increased by a factor of 150 in the past year. Major improvements in the phase- and amplitude-control system and in understanding the electron multipactor and surface-conditioning processes increased the output power. The highest measured efficiency on this gyrocon is 23%, which was obtained with several combinations of parameters. Both the output power and the efficiency are a factor of 3 below the design values, and sev… more
Date: January 1, 1983
Creator: Tallerico, P.J.
Item Type: Refine your search to only Article
open access

185-MeV injector design for the ANL 4-GeV microtron project

Description: The injector starts with a 5 MeV preinjector followed by an 18 MeV S-band linac. The 23 MeV electrons are transported and injected into a Racetrack Microtron via a 10/sup 0/ achromatic bend system. Twenty-seven turns are used to boost the energy to 185 MeV. Reverse-field stripes on the 180/sup 0/ end magnets and quadrupole focussing on the return paths maintain a matched-dispersion free beam with transverse ..beta..= 5.0 m in the center of the 4.6 m long linac. The beam is recirculated outside … more
Date: January 1, 1983
Creator: Colton, E.
Item Type: Refine your search to only Article
open access

240-kA switch with potential application in electromagnetic-launch systems

Description: Electromagnetic (EM) launchers have severe switching requirements. Switching demands for railgun systems, for instance, inlcude current conduction from hundreds of kA to a few MA, conduction times of a ms to a few s, standoff voltages as high as a few tens of kV, to rcovery voltages of 1 to 10 kV after conduction, opening and closing duty, and repetitive operation up to about 50 Hz. These demands, particularly for repetitive opening duty, are far beyond the capability of most current switches a… more
Date: January 1, 1983
Creator: Honig, E. M.
Item Type: Refine your search to only Article
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1982 annual report: Biomass Thermochemical Conversion Program

Description: This report provides a brief overview of the Thermochemical Conversion Program's activities and major accomplishments during fiscal year 1982. The objective of the Biomass Thermochemical Conversion Program is to generate scientific data and fundamental biomass converison process information that, in the long term, could lead to establishment of cost effective processes for conversion of biomass resources into clean fuels and petrochemical substitutes. The goal of the program is to improve the d… more
Date: January 1, 1983
Creator: Schiefelbein, G. F.; Stevens, D. J. & Gerber, M. A.
Item Type: Refine your search to only Report
open access

24th Annual Report

Description: The ACIR Library is composed of publications that study the interactions between different levels of government. This document is an annual report.
Date: January 1983
Creator: United States. Advisory Commission on Intergovernmental Relations.
Item Type: Refine your search to only Book
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2D accelerator design for SITEX negative ion source

Description: Solving the Poisson-Vlasov equations where the magnetic field, B, is assumed constant, we optimize the optical system of a SITEX negative ion source in infinite slot geometry. Algorithms designed to solve the above equations were modified to include the curved emitter boundary data appropriate to a negative ion source. Other configurations relevant to negative ion sources are examined.
Date: January 1, 1983
Creator: Whealton, J. H.; Raridon, R. J.; McGaffey, R. W.; McCollough, D. H.; Stirling, W. L. & Dagenhart, W. K.
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5f state interaction with inner coordination sphere ligands: einsteinium 3+ ion fluorescence in aqueous and organic phases

Description: The interaction between 5f electron states of einsteinium 3+ ion and coordinated ligands in solution has been probed using laser-induced fluorescence. Aquo einsteinium 3+ ion was observed to fluoresce from its first excited J = 5 state in a broad-band peaking at 9260 wavenumbers. The observed fluorescence lifetimes were 1.05 microseconds and 2.78 microseconds in H/sub 2/O and D/sub 2/O (99+ % D atom), respectively. The non-radiative decay rates derived from the lifetime data are compared with p… more
Date: January 1, 1983
Creator: Beitz, James V.; Wester, Dennis W. & Williams, Clayton W.
Item Type: Refine your search to only Report
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Acceleration of heavy ions in the AGS

Description: It is possible to use the Brookhaven AGS as a heavy ion machine by adding a cyclotron to the Tandem and using this combination as injector. An intermediate step for lighter ions might consist of injecting the Tandem beam directly into the AGS. In either case, quite high intensities should be possible.
Date: January 1, 1983
Creator: Barton, M. Q.
Item Type: Refine your search to only Article
open access

Acceleration of heavy ions in the AGS and CBA

Description: A plan has been developed to inject ion beams from the Brookhaven Tandem or a cyclotron added to the Tandem into the AGS. This beam could then be injected into a relativistic heavy ion collider. The availability of many CBA components adds to the attractiveness of this proposal.
Date: January 1, 1983
Creator: Barton, M. Q.
Item Type: Refine your search to only Article
open access

Accelerator breeder: a viable option for the production of nuclear fuels

Description: Despite the growing pains of the US nuclear power industry, our dependence on nuclear energy for the production of electricity and possibly process heat is likely to increase dramatically over the next few deacades. This statement dismisses fusion as being entirely too speculative to be practical within that time frame. Sometime, between the years 2000 and 2050, fissile material will be in short supply whether it is to fuel existing LWR's or to provide initial fuel inventory for FBR's. The acce… more
Date: January 1, 1983
Creator: Grand, P.
Item Type: Refine your search to only Article
open access

Accelerator breeder with uranium, thorium target

Description: An accelerator breeder, that uses a low-enriched fuel as the target material, can produce substantial amounts of fissile material and electric power. A study of H/sub 2/O- and D/sub 2/O-cooled, UO/sub 2/, U, (depleted U), or thorium indicates that U-metal fuel produces a good fissile production rate and electrical power of about 60% higher than UO/sub 2/ fuel. Thorium fuel has the same order of magnitude as UO/sub 2/ fuel for fissile-fuel production, but the generating electric power is substan… more
Date: January 1, 1983
Creator: Takahashi, H.; Powell, J. & Kouts, H.
Item Type: Refine your search to only Article
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Accounting for Time Dependent Source Variations in Surveillance Dosimetry Analysis

Description: One of the difficulties encountered in the calculation of dosimetry reaction rates is how to account for the time dependent behavior of the core source during the irradiation period. Indeed, even the obtaining of this source time dependence in adequate detail is not a trivial task. The straightforward approach of performing a DOT4 or similar transport calculation for each new relative source distribution, although correct, might be prohibitively expensive and time consuming when the irradiation… more
Date: January 1, 1983
Creator: Maerker, R.E. & Williams, M.L.
Item Type: Refine your search to only Article
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Accretion Disks

Description: Derivations are made for the mass and the mass-turnover time scale of an accretion disk as a function of the accretion rate, the observed disk radius, the non-viscous disk radius, and two parameters. These parameters depend on the effectiveness of viscosity and tidal angular momentum loss. Application is made to DQ Herculis.
Date: January 1, 1983
Creator: Sparks, Warren M. & Kutter, G.Siegfried
Item Type: Refine your search to only Article
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Accuracy of external personnel dosimetry systems in mixed neutron and gamma radiation fields

Description: Estimates of biological effects associated with exposure to external radiation fields are generally based on the measured response of passive personnel dosimetry systems to the incident radiation. The increasing number of persons occupationally exposed to mixed neutron and gamma fields and recent questions concerning the relative biological hazards of different types of radiation have emphasized the need for accurate personnel radiation dose measurements. The performance characteristics of vari… more
Date: January 1, 1983
Creator: Swaja, R. E.
Item Type: Refine your search to only Article
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Acquisition systems for heat transfer measurement

Description: Practical heat transfer data acquisition systems are normally characterized by the need for high-resolution, low-drift, low-speed recording devices. Analog devices such as strip chart or circular recorders and FM analog magnetic tape have excellent resolution and work well when data will be presented in temperature versus time format only and need not be processed further. Digital systems are more complex and require an understanding of the following components: digitizing devices, interface bu… more
Date: January 1, 1983
Creator: De Witt, R.J.
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Actinide Behavior in a Freshwater Pond

Description: Long-term investigations of solution chemistry in an alkaline freshwater pond have revealed that actinide oxidation state behavior, particularly that of plutonium, is complex. The Pu(V,VI) fraction was predominant in solution, but it varied over the entire range reported from other natural aquatic environments, in this case, as a result of intrinsic biological and chemical cycles (redox and pH-dependent phenomena). A strong positive correlation between plutonium (Pu), but not uranium (U), and h… more
Date: January 1, 1983
Creator: Trabalka, J. R.; Bogle, M. A. & Scott, T. G.
Item Type: Refine your search to only Article
open access

Active metasomatism in the Cerro Prieto geothermal system, Baja California, Mexico: a telescoped low pressure/temperature metamorphic facies series

Description: In the Cerro Prieto geothermal field, carbonate-cemented, quartzofeldspathic sediments of the Colorado River delta are being actively metasomatized into calc-silicate metamorphic rocks by reaction with alkali chloride brines between 200/sup 0/ and 370/sup 0/C, low fluid and lithostatic pressures, and low oxygen fugacities. Petrologic investigations of drill cores and cutting from over 50 wells in this field identified a prograde series of calc-silicate mineral zones which include as index miner… more
Date: January 1, 1983
Creator: Schiffman, P.; Elders, W. A.; Williams, A. E.; McDowell, S. D. & Bird, D. K.
Item Type: Refine your search to only Report
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