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Author : J. M. Davidson
Publisher :
ISBN 13 :
Total Pages : 104 pages
Book Rating : 4.3/5 (91 download)
Download or read book The H-1 High Temperature Graphite Irradiation Experiment written by J. M. Davidson and published by . This book was released on 1961 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book THE H-1 HIGH TEMPERATURE GRAPHITE IRRADIATION EXPERIMENT. written by and published by . This book was released on 1961 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A high temperature graphite irradiation experinient was performed in the GETR core to determine the effects of differences in manufacturing, formulation, and graphitization temperatures on radiation-induced eontraction. The experiment was performed at temperatures of 800 to 1200 deg C in an intense fast neutron flux. The maximum integrated exposure of the sample positions was 3.2 x 10?sup 21/ nvt, E> 0.18 Mev, corresponding to approximately 24,000 MWD/AT in a conventional graphite-moderated reactor. All the graphites tested, with the exception of the controls, were needle coke filler, coal tar pitch binder graphites varying mn particle size, graphitization temperature, and impregnation. From theoretical and experitnental considerations, the formulations and treatments were expected to result in a relatively stable graphite in the direction transverse to extrusion. For comparison of the experimental results to existing experience, a conventional graphite, CSF, was used at each irradiation position. The results showed that the graphite most stable to contraction was graphaitized at a high temperature(>3100hC) and made from small particle size (all flour) filler. In all cases, the needle coke graphite contracted at a lower rate than the CSF graphite. Differences attributable to the size of extrusion and/or post graphitization cooling rate were discerned readily. Auxil iary to the purposes of the experiment, the apparent thermnal neutron cross section for Co/sup 58/ (plus Co /sup 58m) was determined. Co/sup 58/ and Co/sup 58m/ are the products of the Ni/sup 58/ (n,p) reaction, which is used widely for fast flux monitoring. Both have large thermal neutron capture cross sections which must be accounted for to prevent error in fast neutron dosimetry. In this experiment, a value was determined for the apparent burn-out cross section of 3750 barns. (auth).
Author : J. W. Helm
Publisher :
ISBN 13 :
Total Pages : 122 pages
Book Rating : 4.:/5 (319 download)
Download or read book The H-3 Irradiation Experiment written by J. W. Helm and published by . This book was released on 1964 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : P. J. Peterson
Publisher :
ISBN 13 :
Total Pages : 50 pages
Book Rating : 4.3/5 (91 download)
Download or read book Reactor Irradiation of Uranium-impregnated Graphite at 1500°C to 10% Burnup written by P. J. Peterson and published by . This book was released on 1963 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two type-AUC graphite fuel elements loaded by solution impregnation to an average concentration of 0.115 g/cc of 93.13% enriched U converted to UC and UC2 were irradiated at temperatures of about 1500 deg C to a 10.2% maximum burnup, corresponding to an irradiation level of 219 kwh/cc or 2.45 x 101 fissions/cc of fuel element. Post-irradiation measurements of the elements showed dimensional changes of -4.3 and -4.8% with the grain, and --0.8 to -2.5% across the grain. Weight losses were 3.2 and 5.1% for the individual elements with approximately 11% of the total U being lost from the elements. With-the- grain thermal conductivity at nominal room temperature was reduced by a factor of approximates 7 and electrical conductivities by factors of 3.4 to 8.3, also at room temperature. Impact strength appeared to be somewhat improved by irradiation. Migration of U within the element was detected by radiographic density observations but not evaluated quantitatively. As anticipated, fission product release was high.
Author : Daniel M. Zuckerman
Publisher : CRC Press
ISBN 13 : 1420073796
Total Pages : 356 pages
Book Rating : 4.4/5 (2 download)
Download or read book Statistical Physics of Biomolecules written by Daniel M. Zuckerman and published by CRC Press. This book was released on 2010-06-02 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: From the hydrophobic effect to protein-ligand binding, statistical physics is relevant in almost all areas of molecular biophysics and biochemistry, making it essential for modern students of molecular behavior. But traditional presentations of this material are often difficult to penetrate. Statistical Physics of Biomolecules: An Introduction brin
Author : T.D. Burchell
Publisher :
ISBN 13 :
Total Pages : 568 pages
Book Rating : 4.X/5 (4 download)
Download or read book Carbon Materials for Advanced Technologies written by T.D. Burchell and published by . This book was released on 1999-07-22 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study begins with a review of carbon materials, emphasizing structure and chemical bonding in various forms of carbon. It then goes on to discuss advanced technologies for the manufacture and modification of carbon-based materials and their practical applications.
Author : R. E. Nightingale
Publisher : Academic Press
ISBN 13 : 1483258483
Total Pages : 566 pages
Book Rating : 4.4/5 (832 download)
Download or read book Nuclear Graphite written by R. E. Nightingale and published by Academic Press. This book was released on 2013-10-02 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nuclear Graphite focuses on the development and uses of nuclear graphite, including machining practices, manufacture, nuclear properties and structure, radiation, and electrical resistance. The selection first discusses the applications of graphite in the nuclear industry, machining practices, and manufacture. Discussions focus on early, current, and future applications of graphite, impregnation, graphitization, purification, general machining techniques, and equipment and methods in the nuclear industry. The book then examines the structure and nuclear and properties of graphite. The text evaluates radiation-induced structural and dimensional changes; radiation effects on electrical and thermal properties; and radiation effects on mechanical properties. Topics include radiation effects on crystal structure, electrical resistance, thermoelectric power, magnetoresistance, coefficient of friction, irradiation under stress, and elastic moduli of nuclear graphite. The book also ponders on stored energy, annealing radiation effects, and gas-graphite systems. The selection is a dependable source of data for readers interested in the applications of nuclear graphite.
Author : J. W. Helm
Publisher :
ISBN 13 :
Total Pages : 132 pages
Book Rating : 4.:/5 (319 download)
Download or read book The H-4, H-5, and H-6 Irradiation Experiments written by J. W. Helm and published by . This book was released on 1964 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Karl Verfondern
Publisher : Forschungszentrum Jülich
ISBN 13 : 3893364684
Total Pages : 199 pages
Book Rating : 4.8/5 (933 download)
Download or read book Nuclear Energy for Hydrogen Production written by Karl Verfondern and published by Forschungszentrum Jülich. This book was released on 2007 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 722 pages
Book Rating : 4.0/5 ( download)
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1976-02 with total page 722 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : R. Manzel
Publisher :
ISBN 13 :
Total Pages : 17 pages
Book Rating : 4.:/5 (894 download)
Download or read book A High Temperature Graphite Irradiation Creep Experiment in the Dragon Reactor written by R. Manzel and published by . This book was released on 1971 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book THE H-3 IRRADIATION EXPERIMENT written by and published by . This book was released on 1961 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Electric Company Hanford Atomic Products Operation, RichIrradiation experiments are being performed in the GETR to determine the long-term stability of EGCR graphite. The results of two experiments with a peak total exposure equivalent to 38,000 MWD/AT in the EGCR are available. This is approximately one half the expected lifetime exposure of the EGCR. The H-3-l and H-3-2 capsules contained samples of EGCR graphite and reference CSF graphite. Both capsules were identical and were irradiated sequentially to increasc the dose on the samples. Sixty per cent of the samples irradiated in the H-3-l capsulc were reirradiated in the H-3-2 capsule. The capsule design utilized the gamma heating of the GETR E-7 facility to achieve desired operating temperatures. The temperatures on inter- and intra-cycle irradiation were constant within 25 f C. Samples were irradiated in a temperature range of 475 to 850 f C. The graphite tested was obtained from a fullsize cross section of an EGCR block. Irradiation results did not indicate differences in contraction of parallel samples chosen at several positions within the block. Contraction rates of the graphites tested were found to depend on the temperature of irradiation. Estimates of the contraction rates of parallel samples of EGCR graphite are 0.l5% per l0/sup 21/ nvt at 575 f C and 0.19% per 10/sup 21/ nvt at 475 f C. Parallel samples contracted at a higher rate than the transverse samples. The observed length changes are presented as a function of exposure. (auth).
Author : I. T. Myers
Publisher :
ISBN 13 :
Total Pages : 30 pages
Book Rating : 4.3/5 (91 download)
Download or read book Radiation Damage in Graphite by High Energy Electrons written by I. T. Myers and published by . This book was released on 1962 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : J. T. Meers
Publisher :
ISBN 13 :
Total Pages : 148 pages
Book Rating : 4.3/5 (91 download)
Download or read book High Temperature Radiation Damage to Graphite written by J. T. Meers and published by . This book was released on 1964 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : International Atomic Energy Agency
Publisher :
ISBN 13 : 9789201253101
Total Pages : 639 pages
Book Rating : 4.2/5 (531 download)
Download or read book Advances in High Temperature Gas Cooled Reactor Fuel Technology written by International Atomic Energy Agency and published by . This book was released on 2012-06 with total page 639 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication reports on the results of a coordinated research project on advances in high temperature gas cooled reactor (HTGR) fuel technology and describes the findings of research activities on coated particle developments. These comprise two specific benchmark exercises with the application of HTGR fuel performance and fission product release codes, which helped compare the quality and validity of the computer models against experimental data. The project participants also examined techniques for fuel characterization and advanced quality assessment/quality control. The key exercise included a round-robin experimental study on the measurements of fuel kernel and particle coating properties of recent Korean, South African and US coated particle productions applying the respective qualification measures of each participating Member State. The summary report documents the results and conclusions achieved by the project and underlines the added value to contemporary knowledge on HTGR fuel.
Author : Oak Ridge National Laboratory
Publisher :
ISBN 13 :
Total Pages : 304 pages
Book Rating : 4.3/5 (91 download)
Download or read book Publications, Reports, and Papers for 1961- from Oak Ridge National Laboratory written by Oak Ridge National Laboratory and published by . This book was released on 1965 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : J. M. Davidson
Publisher :
ISBN 13 :
Total Pages : 67 pages
Book Rating : 4.:/5 (72 download)
Download or read book The H-3 Irradiation Experiment written by J. M. Davidson and published by . This book was released on 1961 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt:
