SPACE-ENERGY CELL HOMOGENIZATION

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Fine-structure nuclear analysis program S was extended to provide properly averaged nuclear data for gross-structure analysis work. The input extension consists of the gross-structure space-energy lattice. Cell honiogenization is performed by dircct space-energy integration of each of the reaction-rate terms in the transport equation, with preservation of the detailed balance of leakage, collision, scatter-transfer, fission production, and fixed- source production. On a flexible fluxor-adjoint weighted space-energy cell basis, the extended output includess cell-homogenized cross sections for collision, absorption, scatter, scatter-transfer, and fission multiplication; field depression or accentuation; leakage; surface albedo; and field diffusion coefficient, with inclusion of lumped-void leakage enhancement ... continued below

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Pages: 169

Creation Information

Duane, B.H. & Stanley, M.J. July 1, 1959.

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Description

Fine-structure nuclear analysis program S was extended to provide properly averaged nuclear data for gross-structure analysis work. The input extension consists of the gross-structure space-energy lattice. Cell honiogenization is performed by dircct space-energy integration of each of the reaction-rate terms in the transport equation, with preservation of the detailed balance of leakage, collision, scatter-transfer, fission production, and fixed- source production. On a flexible fluxor-adjoint weighted space-energy cell basis, the extended output includess cell-homogenized cross sections for collision, absorption, scatter, scatter-transfer, and fission multiplication; field depression or accentuation; leakage; surface albedo; and field diffusion coefficient, with inclusion of lumped-void leakage enhancement and other fine- structure heterogeneity effects. Specific areas of immediate engineering applicability in GEANPD fuel loading and gross power shaping work on epithermal reactors includes (1) two-energy albedo input to program K with inclusion of the effects of complex control rod cell structure and of energy degradation within a control rod cell, (2) complete three-energy input to program CURE and to program F/sub 3/ with inclusion of the effects of fine-stnacture void channels and strong absorbers and of three-energy control-rod cell albedos, and (3) nineteen-energy flux depression factors and control-rod cell albedos for input to program G/sub 2/ . (auth)

Physical Description

Pages: 169

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  • Other Information: Orig. Receipt Date: 31-DEC-59

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  • Report No.: APEX-489
  • Grant Number: AF33(600)-38062
  • Grant Number: AND AT(11-1)-171
  • DOI: 10.2172/4211530 | External Link
  • Office of Scientific & Technical Information Report Number: 4211530
  • Archival Resource Key: ark:/67531/metadc1025184

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • July 1, 1959

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  • Oct. 15, 2017, 10:09 p.m.

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Duane, B.H. & Stanley, M.J. SPACE-ENERGY CELL HOMOGENIZATION, report, July 1, 1959; United States. (digital.library.unt.edu/ark:/67531/metadc1025184/: accessed January 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.