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Spatially Dependent Resonance Cross Sections in a Fuel Plate

[+] Author Affiliations
Qian Zhang, Hongchun Wu, Liangzhi Cao, Youqi Zheng

Xi’an Jiaotong University, Xi’an, Shaanxi, China

Paper No. ICONE21-15760, pp. V005T11A009; 5 pages
doi:10.1115/ICONE21-15760
From:
  • 2013 21st International Conference on Nuclear Engineering
  • Volume 5: Fuel Cycle, Radioactive Waste Management and Decommissioning; Reactor Physics and Transport Theory; Nuclear Education, Public Acceptance and Related Issues; Instrumentation and Controls; Fusion Engineering
  • Chengdu, China, July 29–August 2, 2013
  • Conference Sponsors: Nuclear Engineering Division
  • ISBN: 978-0-7918-5582-9
  • Copyright © 2013 by ASME

abstract

The classical resonance absorption theory known as equivalence theorem which treats two-region problem (Fuel/Moderator) has been generalized to arbitrary sub regions of fuel pin by Stoker/Weiss technique and SDDM (Spatially Dependent Dancoff Method). Stoker/Weiss technique and SDDM were derived only for infinite cylinders. To calculate the shielded resonance cross sections for sub regions in the fuel plate, a method is presented by geometrical derivation of first flight blackness for slab geometry. To validate the method, probability approximation and cross section generation are all compared to the benchmark problems. It is concluded that this method is practically useful and appropriate for generating the effective cross-sections in sub regions of a fuel plate.

Copyright © 2013 by ASME

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