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Author Mickael, M.W. ♦ Towsley, C.W.
Sponsorship IEEE Nuclear and Plasma Sciences Society ♦ Computer Applications in Nuclear and Plasma Sciences (CANPS) ♦ Lawrence Berkeley Lab. ♦ Lawrence Livermore Nat. Lab. ♦ APS ♦ College of William and Mary ♦ Continuous Electron Beam Accelerator Facility ♦ NASA ♦ Defence Nuclear Agency ♦ Sandia National Laboratories ♦ Jet Propulsion Laboratory ♦ Brookhaven Nat. Lab. ♦ Lawrence Livermore Nat. Lab ♦ IEEE/NPPS Radiat. Effects Committee ♦ Defence Nuclear Agency/DoD ♦ Sandia National Laboratories/DOE ♦ Jet Propulsion Laboratory/NASA ♦ Phillips Lab./DoD
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©1963
Language English
Subject Domain (in DDC) Natural sciences & mathematics ♦ Physics ♦ Modern physics ♦ Technology ♦ Medicine & health ♦ Engineering & allied operations ♦ Applied physics
Subject Keyword Monte Carlo methods ♦ Neutrons ♦ Computational modeling ♦ Uncertainty ♦ Computer simulation ♦ Testing ♦ Instruments ♦ Nuclear power generation ♦ Analog computers ♦ Anisotropic magnetoresistance
Abstract A novel Monte Carlo code has been developed to stimulate the response of neutron porosity tools. The code features a single variance reduction scheme based on importance sampling. Explicit importance functions are used to continuously determine the particle importance as a function of position and energy. The parameters required for these functions are estimated in a negligible amount of computer time from an analog Monte Carlo simulation prior to the actual simulation. This technique eliminates the difficult task of dividing the medium into cells and does not require setting up an importance map. The code takes into consideration anisotropic elastic and inelastic scattering and thermal neutron scattering with bound nuclei. The counting rate ratio is obtained within a 5% statistical uncertainty in 3 hours of FPS-64 computer time. Benchmark results and comparisons with test-pit data are presented to illustrate the validity and computer efficiency of the proposed code.<<ETX>>
Description Author affiliation :: Western Atlas Int. Inc., Houston, TX, USA
ISSN 00189499
Education Level UG and PG
Learning Resource Type Article
Publisher Date 1991-04-01
Publisher Place U.S.A.
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Volume Number 38
Issue Number 2
Size (in Bytes) 458.64 kB
Page Count 5
Starting Page 501
Ending Page 505

Source: IEEE Xplore Digital Library