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0. 9 a Gev /sup 238/U on /sup 238/U collisions in the LBL streamer chamber. Appendix A

Description: Charged particle exclusive data for high multiplicity U on U events are reported. Analyses are based on comparison with Cugnon's intranuclear cascade model, and the explosion-evaporation simulation of Fai and Randrup. The azimuthal structure of the observed events shows evidence of collective flow. The widely used flow angle methodology proves to be relatively insensitive to collective effects under the conditions of the present experiment. An isotropic pattern of ejectile emission is not reach… more
Date: January 1, 1984
Creator: Fung, S.Y.; Beavis, D.; Gorn, W.; Keane, D.; Liu, Y.M.; Poe, R.T. et al.
Partner: UNT Libraries Government Documents Department
open access

6. 5 Tesla SSC lattice example

Description: This note presents an example SSC collider lattice for 20 TeV proton beams using 6.5 Tesla double bore magnets, six collision points, and anti-symmetric insertions.
Date: January 1, 1984
Creator: Garren, A.A.
Partner: UNT Libraries Government Documents Department
open access

25. mu. A pulsed polarized H/sup -/ ion source

Description: A Haeberli-type pulsed polarized negative hydrogen source has been brought into operation at the BNL Alternating Gradient Synchrotron. It operates reliably at beam currents sometimes as high as 25 ..mu..A and 20 keV in beam pulses of 500 ..mu..sec with approximately 75% polarization. These beam intensities are about an order of magnitude higher than the original Haeberli source built at the University of Wisconsin. This improvement is caused by the higher densities of both the atomic hydrogen b… more
Date: January 1, 1984
Creator: Alessi, J.; Kponou, A. & Sluyters, T.
Partner: UNT Libraries Government Documents Department
open access

60 GHz, 200 kW CW gyrotron with high output mode purity

Description: For the first time, a Varian 60 GHz gyrotron, designed specifically to generate microwaves in a single output mode, has been operated at power levels up to 200 kW CW. High output mode purity is required for the efficient utilization of gyrotrons as high power microwave sources for electron cyclotron resonance heating (ECRH) in magnetic fusion plasmas. Using mode-specific directional couplers, measurements of the output mode content indicated that greater than 95% of the microwave output was in … more
Date: January 1, 1984
Creator: Jory, H.; Felch, K.; Bier, R.; Fox, L.; Huey, H.; Ives, L. et al.
Partner: UNT Libraries Government Documents Department
open access

100 MHz fiber optic single transient gamma ray detection system

Description: A fiber optic system has been developed to measure single transient gamma rays. The gamma ray signature is converted to light by the Cerenkov process in a 20 cm length of radiation resistant optical fiber. The signal is transmitted over 1 km of optical fiber and detected by state-of-the-art, 175 MHz analog receivers. The receivers are based on silicon PIN detectors with transimpedance hybrid amplifiers and two stages of power amplification. The dc coupled receivers have less than 2% distortion … more
Date: January 1, 1984
Creator: Ogle, J. W.; Smith, R. C.; Ward, M.; Ramsey, R. & Hollabaugh, J.
Partner: UNT Libraries Government Documents Department
captions transcript

[1st annual "Black Music and the Civil Rights Movement" concert]

Description: Video recording from The Black Academy of Arts and Letters recorded during the 1st annual Black Music and the Civil Rights Movement concert held in 1984 at the Music Hall at Fair Park. The tape shows slides of notable consultants and musicians followed by parts 1 and 2 of the concert featuring a large gospel choir and speakers.
Date: January 1984
Duration: 1 hour 54 minutes 14 seconds
Partner: UNT Libraries Special Collections
open access

25th 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 1984
Creator: United States. Advisory Commission on Intergovernmental Relations.
Partner: UNT Libraries Government Documents Department
open access

3D calculations of the Superconducting Super Collider (SSC) 3 Tesla magnet

Description: A 20 TeV Superconducting Super Collider (SSC) proton accelerator is being proposed by the High Energy Physics Community. One proposal would consist of a ring of magnets 164 km in circumference with a field strength of 3 Tesla and would cost 2.7 billion dollars. The magnet consists of stacked steel laminations with superconducting coils. The desired field uniformity is obtained for all fields from 0.2 to 3 Tesla by using three (or more) different pole shapes. These three different laminations ar… more
Date: January 1, 1984
Creator: Lari, R.J.
Partner: UNT Libraries Government Documents Department
open access

Absolute subcriticality measurement without calibration and detection efficiency dependence by the /sup 252/Cf source-driven noise method

Description: The /sup 252/Cf-source-driven noise analysis method determines the subcriticality of a system containing fissionable material from the ratio of cross power spectral densities between the detectors that detect particles from the fission process and between these detectors and an ionization chamber containing a spontaneously fissioning neutron source which provides neutrons to induce fission in the system. This method has two advantages: (1) a calibration is not required and thus subcriticality c… more
Date: January 1, 1984
Creator: Mihalczo, J. T. & King, W. T.
Partner: UNT Libraries Government Documents Department
open access

Absorber coatings' degradation

Description: This report is intended to document some of the Los Alamos efforts that have been carried out under the Department of Energy (DOE) Active Heating and Cooling Materials Reliability, Maintainability, and Exposure Testing program. Funding for these activities is obtained directly from DOE although they represent a variety of projects and coordination with other agencies. Major limitations to the use of solar energy are the uncertain reliability and lifetimes of solar systems. This program is aimed… more
Date: January 1, 1984
Creator: Moore, S.W.
Partner: UNT Libraries Government Documents Department
open access

Acceleration of high charge density electron beams in the SLAC linac

Description: The SLAC Linear Collider (SLC) will require both electron and positron beams of very high charge density and low emittance to be accelerated to about 50 GeV in the SLAC 3-km linac. The linac is in the process of being improved to meet this requirement. The program to accelerate an electron beam of high charge density through the first third of the SLC linac is described and the experimental results are discussed. 7 references, 5 figures.
Date: January 1984
Creator: Sheppard, J. C.; Clendenin, J. E.; Jobe, R. K.; Lueth, V. G.; Millich, A.; Ross, M. C. et al.
Partner: UNT Libraries Government Documents Department
open access

Accelerator-colliders for relativistic heavy ions or in search of luminosity

Description: Some issues pertinent to the design of collider rings for relativistic heavy ions are presented. Experiments at such facilities are felt to offer the best chance for creating in the laboratory a new phase of subatomic matter, the quark-gluon plasma. It appears possible to design a machine with sufficient luminosity, even for the heaviest nuclei in nature, to allow a thorough exploration of the production conditions and decay characteristics of quark-gluon plasma.
Date: January 1, 1984
Creator: Young, G. R.
Partner: UNT Libraries Government Documents Department
open access

Accelerator mass spectrometry with a coupled tandem-linac system

Description: A coupled system provides higher energies, which allows one to extend AMS to hitherto untouched mass regions. Another important argument is that the complexity, although bothersome for the operation, increases the selectivity of detecting a particular isotope. The higher-energy argument holds for any heavy-ion accelerator which is capable of delivering higher energy than a tandem. The present use of tandem-linac combinations for AMS, rather than cyclotrons, linacs or combinations of these machi… more
Date: January 1, 1984
Creator: Kutschera, W.
Partner: UNT Libraries Government Documents Department
open access

Accidental Degeneracies, Hidden Supersymmetries, and Spectrum-Generating Superalgebras

Description: Recently, several Hamiltonians appeared in the literature which exhibit degeneracies that do not seem to be explainable in terms of hidden symmetry groups. Such Hamiltonians are shown to constitute supersymmetric quantum-mechanical systems. The concept of spectrum-generating superalgebras is introduced and coordinate space representations of the relevant non-compact superalgebras Osp(1/2) and SU(1,1/1) are exhibited.
Date: January 1, 1984
Creator: Balantekin, A. B.
Partner: UNT Libraries Government Documents Department
open access

Acoustic mode in numerical calculations of subsonic combustion

Description: A review is given of the methods for treating the acoustic mode in numerical calculations of subsonic combustion. In numerical calculations of subsonic combustion, treatment of the acoustic mode has been a problem for many researchers. It is widely believed that Mach number and acoustic wave effects are negligible in many subsonic combustion problems. Yet, the equations that are often solved contain the acoustic mode, and many numerical techniques for solving these equations are inefficient whe… more
Date: January 1, 1984
Creator: O'Rourke, P.J.
Partner: UNT Libraries Government Documents Department
open access

Actinide separations by supported liquid membranes

Description: The work has demonstrated that actinide removal from synthetic waste solutions using both flat-sheet and hollow-fiber SLM's is a feasible chemical process at the laboratory scale level. The process is characterized by the typical features of SLM's processes: very small quantities of extractant required; the potential for operations with high feed/strip volume ratios, resulting in a corresponding concentration factor of the actinides; and simplicity of operation. Major obstacles to the implement… more
Date: January 1, 1984
Creator: Danesi, P.R.; Horwitz, E.P.; Rickert, P. & Chiarizia, R.
Partner: UNT Libraries Government Documents Department
open access

Actinides: from heavy fermions to plutonium metallurgy

Description: The actinide elements mark the emergence of 5f electrons. The f electrons possess sufficiently unusual characteristics that their participation in atomic binding often result in dramatic changes in properties. This provides an excellent opportunity to study the question of localization of electrons; a question that is paramount in predicting the physical and chemical properties of d and f electron transition metals. The transition region between localized (magnetic) and itinerant (often superco… more
Date: January 1, 1984
Creator: Smith, J.L.; Fisk, Z. & Hecker, S.S.
Partner: UNT Libraries Government Documents Department
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Actinides, the narrowwest bands

Description: A table of elements is shown that demonstrates the crossover from superconductivity to magnetism as well as regions of mixed valence. In particular, the actinides must eventually show 4f-electron like mixed valence, after the 5f-electrons become localized. There also seems to be an adiabatic continuation between heavy fermion and mixed valence behavior.
Date: January 1, 1984
Creator: Smith, J.L. & Riseborough, P.S.
Partner: UNT Libraries Government Documents Department
open access

Activity ratios of thorium daughters in vivo

Description: A computerized method of least squares has been used to analyze the /sup 228/Ac and /sup 212/Pb-/sup 212/Bi and daughter ..gamma..-ray spectra obtained in vivo from 133 former workers at a thorium refinery. In addition, the exhalation rate of /sup 220/Rn was determined for each subject and expressed as pCi of emanating /sup 224/Ra. This value was added to the /sup 212/Pb value determined from the ..gamma..-ray measurements to obtain the total /sup 224/Ra present, and the ratio of /sup 224/Ra to… more
Date: January 1, 1984
Creator: Toohey, R.E.; Rundo, J.; Sha, J.Y.; Essling, M.A.; Pedersen, J.C. & Slane, J.M.
Partner: UNT Libraries Government Documents Department
open access

Adjoint transport calculations for sensitivity analysis of the Hiroshima air-over-ground environment

Description: A major effort within the US Dose Reassessment Program is aimed at recalculating the transport of initial nuclear radiation in an air-over-ground environment. This paper is the first report of results from adjoint calculations in the Hiroshima air-over-ground environment. The calculations use a Hiroshima/Nagasaki multi-element ground, ENDF/B-V nuclear data, one-dimensional ANISN flux weighting for neutron and gamma cross sections, a source obtained by two-dimensional hydrodynamic and three-dime… more
Date: January 1, 1984
Creator: Broadhead, B. L.; Cacuci, D. G. & Pace, J. V. III
Partner: UNT Libraries Government Documents Department
open access

Advanced crystalline laser materials

Description: To guide the laser materials research and development effort, we have analyzed the scaling laws for zig-zag and flow-cooled disk amplifiers, defined materials figures of merit, and developed laser performance applications maps. Within this technical framework, we have embarked on an effort to synthesize, characterize, select, and develop new materials useful for a variety of robust laser applications.
Date: January 1, 1984
Creator: Krupke, W. F.
Partner: UNT Libraries Government Documents Department
open access

Advanced remotely maintainable force-reflecting servomanipulator concept

Description: A remotely maintainable force-reflecting servomanipulator concept is being developed at the Oak Ridge National Laboratory as part of the Consolidated Fuel Reprocessing Program. This new manipulator addresses requirements of advanced nuclear fuel reprocessing with emphasis on force reflection, remote maintainability, reliability, radiation tolerance, and corrosion resistance. The advanced servomanipulator is uniquely subdivided into remotely replaceable modules which will permit in situ manipula… more
Date: January 1, 1984
Creator: Kuban, D. P. & Martin, H. L.
Partner: UNT Libraries Government Documents Department
open access

Advanced remotely maintainable force-reflecting servomanipulator concept

Description: A remotely maintainable force-reflecting servomanipulator concept is being developed at the Oak Ridge National Laboratory as part of the Consolidated Fuel Reprocessing Program. This new manipulator addresses requirements of advanced nuclear fuel reprocessing with emphasis on force reflection, remote maintainability, reliability, radiation tolerance, and corrosion resistance. The advanced servomanipulator is uniquely subdivided into remotely replaceable modules which will permit in situ manipula… more
Date: January 1, 1984
Creator: Kuban, D. P. & Martin, H. L.
Partner: UNT Libraries Government Documents Department
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