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Effects of a hypothetical loss-of-coolant accident on a Mark I Boiling Water Reactor pressure-suppression system

Description: A loss-of-coolant accident (LOCA) in a boiling-water-reactor (BWR) power plant has never occurred. However, because this type of accident could be particularly severe, it is used as a principal theoretical basis for design. A series of consistent, versatile, and accurate air-water tests that simulate LOCA conditions has been completed on a /sup 1///sub 5/-scale Mark I BWR pressure-suppression system. Results from these tests are used to quantify the vertical-loading function and to study the as… more
Date: December 22, 1977
Creator: Pitts, J.H. & McCauley, E.W.
Partner: UNT Libraries Government Documents Department
open access

Scaling of exploding pusher targets

Description: A theory of exploding pusher laser pusher targets is compared to results of LASNEX calculations and to Livermore experiments. A scaling relationship is described which predicts the optimum target/pulse combinations as a function of the laser power.
Date: August 22, 1977
Creator: Nuckolls, J.H.
Partner: UNT Libraries Government Documents Department
open access

Stability of space-charge neutralized beams

Description: Consideration is given to the stability of negative ion beams which are neutralized through ionization of a background gas. Two types of instabilities are examined. First, beam-plasma instabilities are analyzed with the dispersion relation showing that they are unimportant if the beam velocity is less than the electron thermal velocity. Second, results of a computer simulation on the flow of a cylindrical beam and the resulting background plasma show that when the background neutral gas density… more
Date: September 22, 1977
Creator: Turnbull, R. J. & Hooper, E. B. Jr.
Partner: UNT Libraries Government Documents Department
open access

Cold-pressure-welded joints in large multifilamentary Nb--Ti superconductors

Description: A number of mechanical and electrical measurements were made on joints in typical conductors for the proposed mirror fusion test facility (MFTF) and high field test facility (HFTF). For such measurements, a commercially available cold-pressure-welding machine was used. For joints in the MFTF conductor, which has a large proportion of superconductor, joint strength approached conductor strength. For the HFTF conductor, where the Cu-to-superconductor ratio is 4.33/1, the joint is stronger than th… more
Date: September 22, 1977
Creator: Cornish, D.N.; Deis, D.W. & Zbasnik, J.P.
Partner: UNT Libraries Government Documents Department
open access

Effect of transport in distribution of radioions and radiolabeled metabolites

Description: The following topics are discussed: route of administration; carrier effects and complexed or ionic tracers; membrane permeability, extracellular and intracellular concentrations; enzyme and hormonal stimulation or depression and the metabolic state; neoplasia and transport; and carrier for radiopharmaceutical binding to membrane or protein sites. Some radioisotopes considered are /sup 99m/Tc, /sup 65/Zn, /sup 62/Zn, /sup 14/C and /sup 111/In. (HLW)
Date: December 22, 1977
Creator: Yano, Y.
Partner: UNT Libraries Government Documents Department
open access

Some considerations for geothermal district heating

Description: The distribution of geothermal resources in relation to the location of population centers in the U.S. is considered. Capital aspects of district heating systems are discussed. Estimates are given of distribution network capital investment as a function of population in service area. Swedish and Icelandic cost experience is taken into consideration. The need for more specific assessment of the potential for direct use of geothermal energy is cited. (JGB)
Date: June 22, 1977
Creator: Karkheck, J.
Partner: UNT Libraries Government Documents Department
open access

Use of the n,p scattering reaction for neutron flux measurements

Description: Several contemporary proton-recoil detectors are described and compared. These detectors have been used for neutron-spectrum measurements over various portions of the 10-keV-to-20-MeV energy range. Several factors which limit the accuracy of the results are compared quantitatively. General suggestions are given for setting and using standard cross sections and for future developments using the n,p scattering reaction.
Date: March 22, 1977
Creator: Czirr, J. B.
Partner: UNT Libraries Government Documents Department
open access

Computation of gas-liquid equilibria in high-saline geothermal fluids

Description: A computer-assisted chemical modeling study of equilibria in flowing brine systems has been undertaken. Equilibria between liquid and volatile components of two-phase fluids have profound effects on such important phenomena as corrosion, scale formation, environmental quality, and the economics of energy extraction. The principal reactions considered are those involving volatiles naturally present in the fluid, including NH/sub 3/, H/sub 2/S and CO/sub 2/. A computer code is described which per… more
Date: April 22, 1977
Creator: Jackson, D. D.
Partner: UNT Libraries Government Documents Department
open access

Range of investigation of a borehole gravimeter

Description: Concepts of the range of investigation of a borehole gravimeter are reviewed. It is shown that the maximum sensitivity to a mass point at a horizontal distance R from a borehole occurs at a vertical distance Z = R/..sqrt..2. Thus, the angle of maximum sensitivity is about 55/sup 0/ from the vertical. It is also shown that the absolute value of the gravitational effect decreases with increasing R. There are two maxima of the vertical gradient of gravity (at Z = 0 and at Z = ..sqrt../sup 3///sub … more
Date: February 22, 1977
Creator: Hearst, J. R.
Partner: UNT Libraries Government Documents Department
open access

Neutron dosimetry studies at the Lawrence Livermore Laboratory

Description: Work performed since the last Workshop meeting is summarized. The studies have been divided into the following sections: (1) response of albedo neutron dosimeters to low energy neutrons; (2) discussion of dose-equivalent conversion factors; (3) modification of the A-B remmeter; (4) the effect of distance from the body on the response of albedo neutron dosimeters; (5) comparison of albedo neutron dosimeter techniques; and (6) modified NAD badge for additional beta shielding and albedo neutron do… more
Date: June 22, 1977
Creator: Hankins, D. E.
Partner: UNT Libraries Government Documents Department
open access

High density hydrogen research

Description: The interest in the properties of very dense hydrogen is prompted by its abundance in Saturn and Jupiter and its importance in laser fusion studies. Furthermore, it has been proposed that the metallic form of hydrogen may be a superconductor at relatively high temperatures and/or exist in a metastable phase at ambient pressure. For ten years or more, laboratories have been developing the techniques to study hydrogen in the megabar region (1 megabar = 100 GPa). Three major approaches to study de… more
Date: June 22, 1977
Creator: Hawke, R. S.
Partner: UNT Libraries Government Documents Department
open access

Prompt leptons and hadronic jets from W mesons. [SU(2) x U(1) quark model]

Description: The signal/background ratio for the decay of the W into hadronic jets, it is affirmed, should be improved by a factor of about 15 if a prompt lepton is required. For definiteness the hadronic decays of the W/sup +/ in an SU(2) x U(1) model with six quarks is considered. (JFP)
Date: August 22, 1977
Creator: Paige, F. E. & Palmer, R. B.
Partner: UNT Libraries Government Documents Department
open access

Radioactive waste isolation: a national problem

Description: The principal aim of the National Waste Terminal Storage (NWTS) program is to develop repositories in several different rock formations in various parts of the country. Rocks such as salt, shale, limestone, and granite may qualify as host media for the disposition of radioactive wastes in the proper environments. In general, the only requirement for any rock formation or storage area is that it be able to contain any emplaced wastes for so long as it takes for the radioactive materials to decay… more
Date: February 22, 1977
Creator: Lomenick, T. F.
Partner: UNT Libraries Government Documents Department
open access

Optical components for the SHIVA laser

Description: SHIVA, the 10-kilojule Neodymium-glass laser for the High Energy Laser Facility at Lawrence Livermore Laboratory has been built, exceeded minimum energy predictions, and is currently being applied to laser fusion experiments. The twenty, 20-cm aperture arms contain a total of about 1500 optical components for beam propagation, and another 1000 elements are used for control systems and diagnostics. In order to focus the energy on targets smaller than 1 mm in diameter, it has been necessary to ma… more
Date: December 22, 1977
Creator: Wallerstein, E. P.; Marchi, F. T.; Whistler, W. T. & Bissinger, H. D.
Partner: UNT Libraries Government Documents Department
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