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Neutronics and mass transport in a chemical reactor associated with controlled thermonuclear fusion reactor

Description: The formation of ozone from oxygen and the dissociation carbon dioxide to carbon monoxide and oxygen is studied in a gamma-neutron chemical process blanket associated with a controlled thermonuclear reactor. Materials used for reactor tube wall will affect the efficiency of the energy absorption by the reactants and consequently the yield of reaction products. Three kinds of materials, aluminum, stainless steel and fiber (Al/sub 2/O/sub 3/)-aluminium are investigated for the tube wall material in the study.
Date: November 28, 1976
Creator: Dang, V D; Steinberg, M; Lazareth, O W & Powell, J R
Partner: UNT Libraries Government Documents Department

Gold and silver in stream sediments from reconnaissance of 3 x 10/sup 5/ KM/sup 2/ of the western United States

Description: As part of the National Uranium Resource Evaluation (NURE) Program, Lawrence Livermore National Laboratory analyzed about 30,000 stream sediment samples from selected areas of the western United States for numerous chemical elements. The analysis was performed by neutron activation. Data for the concentrations of gold and silver for the samples in which they were detected are presented. Gold was detected in 310 samples, and silver in 19. Latitudes and longitudes are given for the sites from which these samples were taken.
Date: April 28, 1981
Creator: Van Konynenburg, R.A.; McMillan, G.G. & Higgins, G.H.
Partner: UNT Libraries Government Documents Department

Nucleonics of a Be-Li-Th blanket for the fusion breeder

Description: The nuclear performance of a candidate fission-suppressed, U233-producing blanket is assessed. It is predicted to have a breeding ratio (fusile + fissile) of 1.68 and produce U233 at a rate of 8030 kg/year from 3140 MW of DT fusion and a blanket coverage of 96%. Blanket energy multiplication is estimated to vary between 1.3 and 2.0 as the U233/Th232 ratio varies between 0 and 0.5%. Heterogeneous effects in the blanket's pebble-bed configuration were found to be important and more detailed analysis is needed to more accurately predict Li6 content required and U233 fission power versus U233 content.
Date: March 28, 1983
Creator: Lee, J.D.
Partner: UNT Libraries Government Documents Department

Design of a materials testing experiment for the INTOR

Description: The United States, Japan, USSR and the European community are jointly participating in the design of an International Tokamak Reactor called INTOR. In support of the US contribution to the INTOR design, the features of an experiment for bulk neutron irradiation damage studies were developed. It is anticipated that materials testing will be an important part of the programmatic mission of INTOR and consequently the requirements for materials testing in INTOR must be identified early in the reactor design to insure compatibility. The design features of the experiment, called a Channel Test, are given in this paper. The major components of the channel test are the water cooled heat sink (channel module) and the specimen capsule. The temperature within each of the 153 specimen capsules is predetermined by engineering the thermal barrier between the specimen capsule and heat sink. Individual capsules can be independently accessed and are designed to operate at a predetermined temperature within the range of 50 to 700/sup 0/C. The total irradiation volume within a single channel test is 45 liters. Features of the channel test that result in experimental versatility and simplified remote access and handling are discussed.
Date: August 28, 1981
Creator: Vogel, M.A. & Opperman, E.K.
Partner: UNT Libraries Government Documents Department

Neutron cross sections and Doppler effect of the 1. 056 eV resonance in /sup 240/Pu

Description: /sup 240/Pu possesses a value for the dilute resonance capture integral that is mostly due to the resonance at 1.056 eV. It is important to the neutron economy of a reactor to know the accurate size of the resonance, i.e., GAMMA/sub n/ and GAMMA/sub ..gamma../. The HFBR fast chopper facility has been used to make a determination of these resonance parameters. In this low energy region the intensity and resolution of the instrument are adequate for precise measurements.
Date: September 28, 1981
Creator: Liou, H.I. & Chrien, R.E.
Partner: UNT Libraries Government Documents Department