Prompt Neutron Lifetime for the NBSR Reactor

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In preparation for the proposed conversion of the National Institute of Standards and Technology (NIST) research reactor (NBSR) from high-enriched uranium (HEU) to low-enriched uranium (LEU) fuel, certain point kinetics parameters must be calculated. We report here values of the prompt neutron lifetime that have been calculated using three independent methods. All three sets of calculations demonstrate that the prompt neutron lifetime is shorter for the LEU fuel when compared to the HEU fuel and longer for the equilibrium end-of-cycle (EOC) condition when compared to the equilibrium startup (SU) condition for both the HEU and LEU fuels.

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Hanson, A.L. & Diamond, D. June 24, 2012.

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In preparation for the proposed conversion of the National Institute of Standards and Technology (NIST) research reactor (NBSR) from high-enriched uranium (HEU) to low-enriched uranium (LEU) fuel, certain point kinetics parameters must be calculated. We report here values of the prompt neutron lifetime that have been calculated using three independent methods. All three sets of calculations demonstrate that the prompt neutron lifetime is shorter for the LEU fuel when compared to the HEU fuel and longer for the equilibrium end-of-cycle (EOC) condition when compared to the equilibrium startup (SU) condition for both the HEU and LEU fuels.

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  • 2012 ANS Annual Meeting: Nuclear Science adn Technology: Managing the Global Impact of Economic and Natural Events; Chicago, IL; 20120624 through 20120628

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  • Report No.: BNL--96854-2012-CP
  • Grant Number: DE-AC02-98CH10886
  • Office of Scientific & Technical Information Report Number: 1038105
  • Archival Resource Key: ark:/67531/metadc832500

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Office of Scientific & Technical Information Technical Reports

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  • June 24, 2012

Added to The UNT Digital Library

  • May 19, 2016, 3:16 p.m.

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  • July 21, 2016, 7:04 p.m.

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Hanson, A.L. & Diamond, D. Prompt Neutron Lifetime for the NBSR Reactor, article, June 24, 2012; United States. (digital.library.unt.edu/ark:/67531/metadc832500/: accessed October 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.