Influence of the Density Law on Various Fissile Single Unit and Array Storage Methods

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The advancement of computational technology has resulted in the wide-spread availability of powerful radiation transport Monte Carlo codes. Prevailing practices today rely heavily on Monte Carlo codes to provide the basis for assessing the reactivity of various fissile systems for nuclear criticality safety (NCS). In 1958, Weinberg and Wigner expressed their concerns on a 'deplorable trend in reactor design - the tendency to substitute a code for a theory'. Unfortunately, their concerns have largely become a reality in many modern NCS practices. lacking the time or information to understand the underlying neutron physics of the fissile system under consideration is ... continued below

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Huang, S T March 2, 2011.

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The advancement of computational technology has resulted in the wide-spread availability of powerful radiation transport Monte Carlo codes. Prevailing practices today rely heavily on Monte Carlo codes to provide the basis for assessing the reactivity of various fissile systems for nuclear criticality safety (NCS). In 1958, Weinberg and Wigner expressed their concerns on a 'deplorable trend in reactor design - the tendency to substitute a code for a theory'. Unfortunately, their concerns have largely become a reality in many modern NCS practices. lacking the time or information to understand the underlying neutron physics of the fissile system under consideration is indeed a deplorable trend. The purpose of this paper is to demonstrate that many features of criticality hand calculation methods are indeed based upon the fundamentals of the density law and that many correlations of important physics parameters can be more easily understood from such a perspective. Historically, the density law was recognized by many pioneers in the field, including during the Manhattan Project. However, it was by and large an 'oral tradition' in that bits and pieces of great physical insights of the pioneers were scattered in many earlier publications. This paper attempts to bring together some of the 'jewels' of the pioneers which might have been lost or forgotten.

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PDF-file: 4 pages; size: 0.9 Mbytes

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  • Presented at: American Nuclear Society 2011 Annual Conference, Hollywood, FL, United States, Jun 26 - Jun 30, 2011

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  • Report No.: LLNL-CONF-471864
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 1021537
  • Archival Resource Key: ark:/67531/metadc840066

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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.

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  • March 2, 2011

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  • May 19, 2016, 3:16 p.m.

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  • Dec. 5, 2016, 8:52 p.m.

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Huang, S T. Influence of the Density Law on Various Fissile Single Unit and Array Storage Methods, article, March 2, 2011; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc840066/: accessed September 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.