Studies of epithermal neutrons in uranium, heavy water lattices
Statement of responsibility on title-page reads: W. H. D'Ardenne, T. J. Thompson, D. D. Lanning and I. Kaplan
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| Format: | Technical Report |
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Cambridge, Mass. : Dept. of Nuclear Engineering, Massachusetts Institute of Technology, 1964
2014
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| Online Access: | http://hdl.handle.net/1721.1/89548 |
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| author | D'Ardenne, Walter Herbert Thompson, Theos Jardin, 1918-1970 Lanning, David D. Kaplan, Irving, 1912- |
| author2 | Massachusetts Institute of Technology. Department of Nuclear Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Nuclear Engineering D'Ardenne, Walter Herbert Thompson, Theos Jardin, 1918-1970 Lanning, David D. Kaplan, Irving, 1912- |
| author_sort | D'Ardenne, Walter Herbert |
| collection | MIT |
| description | Statement of responsibility on title-page reads: W. H. D'Ardenne, T. J. Thompson, D. D. Lanning and I. Kaplan |
| first_indexed | 2024-09-23T16:40:58Z |
| format | Technical Report |
| id | mit-1721.1/89548 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T16:40:58Z |
| publishDate | 2014 |
| publisher | Cambridge, Mass. : Dept. of Nuclear Engineering, Massachusetts Institute of Technology, 1964 |
| record_format | dspace |
| spelling | mit-1721.1/895482019-04-11T08:57:48Z Studies of epithermal neutrons in uranium, heavy water lattices D'Ardenne, Walter Herbert Thompson, Theos Jardin, 1918-1970 Lanning, David D. Kaplan, Irving, 1912- Massachusetts Institute of Technology. Department of Nuclear Engineering U.S. Atomic Energy Commission TK9008.M41 N96 no.53 Neutrons Heavy water reactors Nuclear fuel elements Nuclear fission Statement of responsibility on title-page reads: W. H. D'Ardenne, T. J. Thompson, D. D. Lanning and I. Kaplan "August 24, 1964." "MIT-2344-2." Also issued as a Ph. D. thesis by the first author, MIT Dept. of Nuclear Engineering, 1964 Includes bibliographical references (leaves 167-170) Measurements related to reactor physics parameters were made in three heavy water lattices. The three lattices studied consisted of 0.250-inch-diameter, 1.03 w/o U2 3 5 uranium fuel rods arranged in triangular arrays and spaced at 1.25, 1.75, and 2.50 inches. The following quantities were measured in each of the three lattices studied: the ratio of the average epicadmium U2 3 8 capture rate in the fuel rod to the average subcadmium U2 3 8 capture rate in the fuel rod ([sigma]28); the ratio of the average epicadmium U2 3 o fission rate in the fuel rod7 to the average subcadmium U 35 fission rate in the fuel rod (625); the ratio of the average U2 3 8 capture rate in the fuel rod to the average U2 3 5 fission rate in the fuel rod (C ); the ratio of the average U2 3 8 fission rate in the fuel rod to the average U2 3 5 fission rate in the fuel rod (628); and the effective resonance integral of U2 3 8 in a fuel rod (ER12 8 ). The results of an investigation of systematic errors associated with these measurements have-led to many changes and adjustments in the experimental techniques and procedure which have improved the general precision of the experimental results. A new method was developed to measure the ratio C * which simplified the experiment, significantly reduced the experimental uncertainty associated with the measurement, and avoided systematic errors inherent in the method used to measure C* in earlier work. The value of ER12 8 was also measured by a new method in which the results of measurements made in an epithermal flux which had a 1/E energy dependence are combined with the results of measurements made in a lattice. The experimental results were combined with theoretical results obtained from the computer programs THERMOS and GAM-I to determine the following reactor physics parameters for each of the three lattices studied: the resonance escape probability, p; the fast fission factor, E; the multiplication factor for an infinite system, k [infinity]; and the initial conversion ratio, C. Methods were developed to measure that portion of the activity of a foil which is due to neutron captures in the resonances in the activation cross section of the foil material. The resonance escape probability was determined by a new method, using the resonance activation date, in which the use of cadmium is not necessary. U.S. Atomic Energy Commission contract AT(30-1)-2344 2014-09-15T17:54:05Z 2014-09-15T17:54:05Z 1964 Technical Report http://hdl.handle.net/1721.1/89548 09755035 MIT-2344-2 MITNE ; no. 53 AEC research and development report TID ; 4500 xiii, 204 leaves application/pdf Cambridge, Mass. : Dept. of Nuclear Engineering, Massachusetts Institute of Technology, 1964 |
| spellingShingle | TK9008.M41 N96 no.53 Neutrons Heavy water reactors Nuclear fuel elements Nuclear fission D'Ardenne, Walter Herbert Thompson, Theos Jardin, 1918-1970 Lanning, David D. Kaplan, Irving, 1912- Studies of epithermal neutrons in uranium, heavy water lattices |
| title | Studies of epithermal neutrons in uranium, heavy water lattices |
| title_full | Studies of epithermal neutrons in uranium, heavy water lattices |
| title_fullStr | Studies of epithermal neutrons in uranium, heavy water lattices |
| title_full_unstemmed | Studies of epithermal neutrons in uranium, heavy water lattices |
| title_short | Studies of epithermal neutrons in uranium, heavy water lattices |
| title_sort | studies of epithermal neutrons in uranium heavy water lattices |
| topic | TK9008.M41 N96 no.53 Neutrons Heavy water reactors Nuclear fuel elements Nuclear fission |
| url | http://hdl.handle.net/1721.1/89548 |
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