Studies of two-region subcritical uranium heavy water lattices
"February 1969."
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| Format: | Technical Report |
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Cambridge, Mass. : Dept. of Nuclear Engineering, Massachusetts Institute of Technology, [1969]
2014
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| Online Access: | http://hdl.handle.net/1721.1/89559 |
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| author | Gosnell, James Waterbury Driscoll Michael A. Thompson Theos Jardin 1918-1970 |
| author2 | Massachusetts Institute of Technology. Department of Nuclear Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Nuclear Engineering Gosnell, James Waterbury Driscoll Michael A. Thompson Theos Jardin 1918-1970 |
| author_sort | Gosnell, James Waterbury |
| collection | MIT |
| description | "February 1969." |
| first_indexed | 2024-09-23T14:53:38Z |
| format | Technical Report |
| id | mit-1721.1/89559 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T14:53:38Z |
| publishDate | 2014 |
| publisher | Cambridge, Mass. : Dept. of Nuclear Engineering, Massachusetts Institute of Technology, [1969] |
| record_format | dspace |
| spelling | mit-1721.1/895592019-04-10T10:39:41Z Studies of two-region subcritical uranium heavy water lattices Gosnell, James Waterbury Driscoll Michael A. Thompson Theos Jardin 1918-1970 Massachusetts Institute of Technology. Department of Nuclear Engineering U.S. Atomic Energy Commission TK9008.M41 N96 no.88 Massachusetts Institute of Technology. Research Reactor Heavy water reactors Nuclear fuel elements Uranium "February 1969." "MIT-2344-13." Some technical reports have the series numbering of MITNE-84 Substantially the same as J.W. Gosnell's Ph. D. thesis in the Dept. of Nuclear Engineering, 1969 Includes bibliographical references (leaves [212]-215) Reactor physics parameters were measured in eleven two-region subcritical assemblies moderated by heavy water. The regions of the assemblies consisted of nine different lattices of various fuel rod size, U235 enrichment, and spacing. The following parameters were measured in the assemblies: bare and cadmium-covered gold foil radial traverses; bare gold foil axial traverses; the ratio of epicadmium to subcadmium capture r tes in U238 (P28); and the ratio of fissions in U238 to fissions in U233(628)- From analysis of axial traverses at various radial positions, it was determined that the axial buckling was independent of radial position in the assemblies. A method was developed to apply the age equation to the experimental gold foil traverses. This analysis yielded the quantity [ ... ] for each region of the assemblies. Calculated values of [ ... ] were used to obtain values of the infinite multiplication factor from this parameter. For assemblies of sufficiently large inner regions, the values of km so found agreed within experimental uncertainty with independent determinations. The slowing-down spectra. arising from the age theory analysis were used to extrapolate two-region assembly measurements of P28 to critical assembly values. General agreement was found between these extrapolated values and the results of measurements made in full, single region lattices. The heterogeneous expressions for uncollided flux derived by Pilat were extended to two-region assemblies and used to determine single rod values of 628 from two-region assembly measurements. The theory was also used to predict values of 628 for each of the lattices composing the two-region assemblies. Both the single rod values and the full lattice predictions agreed within experimental error with previously reported results. The determination of material buckling from two-region subcritical assemblies is also discussed.! Because of the nature of the assemblies investigated, satisfactory measurements of the material buckling could not be made. U.S. Atomic Energy Commission contract AT(30-1)-2344 2014-09-15T17:55:18Z 2014-09-15T17:55:18Z 1969 Technical Report http://hdl.handle.net/1721.1/89559 09824926 MIT-2344-13 MITNE ; no. 88 MITNE ; no. 84 AEC research and development report TID ; 4500 215 leaves application/pdf Cambridge, Mass. : Dept. of Nuclear Engineering, Massachusetts Institute of Technology, [1969] |
| spellingShingle | TK9008.M41 N96 no.88 Massachusetts Institute of Technology. Research Reactor Heavy water reactors Nuclear fuel elements Uranium Gosnell, James Waterbury Driscoll Michael A. Thompson Theos Jardin 1918-1970 Studies of two-region subcritical uranium heavy water lattices |
| title | Studies of two-region subcritical uranium heavy water lattices |
| title_full | Studies of two-region subcritical uranium heavy water lattices |
| title_fullStr | Studies of two-region subcritical uranium heavy water lattices |
| title_full_unstemmed | Studies of two-region subcritical uranium heavy water lattices |
| title_short | Studies of two-region subcritical uranium heavy water lattices |
| title_sort | studies of two region subcritical uranium heavy water lattices |
| topic | TK9008.M41 N96 no.88 Massachusetts Institute of Technology. Research Reactor Heavy water reactors Nuclear fuel elements Uranium |
| url | http://hdl.handle.net/1721.1/89559 |
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