Automated MCNP photon source generation for arbitrary configurations of radioactive materials and first-principles calculations of photon detector responses

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Description

A patch to the Los Alamos Monte Carlo code MCNP has been developed that automates the generation of source descriptions for photons from arbitrary mixtures and configurations of radioactive isotopes. Photon branching ratios for decay processes are obtained from national and international data bases and accesed directly from computer files. Code user input is generally confined to readily available information such as density, isotopic weight fractions, atomic numbers, etc. of isotopes and material compositions. The availbility of this capability in conjunction with the ''generalized source'' capability of MCNP Version 3A makes possible the rapid and accurate description of photon sources ... continued below

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Pages: 24

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Estes, G.P.; Schrandt, R.G. & Kriese, J.T. March 1, 1988.

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Description

A patch to the Los Alamos Monte Carlo code MCNP has been developed that automates the generation of source descriptions for photons from arbitrary mixtures and configurations of radioactive isotopes. Photon branching ratios for decay processes are obtained from national and international data bases and accesed directly from computer files. Code user input is generally confined to readily available information such as density, isotopic weight fractions, atomic numbers, etc. of isotopes and material compositions. The availbility of this capability in conjunction with the ''generalized source'' capability of MCNP Version 3A makes possible the rapid and accurate description of photon sources from complex mixtures and configurations of radioactive materials, resulting in imporved radiation transport predictive capabilities. This capability is combined with a first - principles calculation of photon spectrometer response - functions for NaI, BGO, and HPGe for E..gamma.. )approxreverse arrowlt) 1 MeV. 25 refs., 1 fig., 4 tabs.

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Pages: 24

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  • Other: DE88007163
  • Report No.: LA-11153-MS
  • Grant Number: W-7405-ENG-36
  • DOI: 10.2172/5186273 | External Link
  • Office of Scientific & Technical Information Report Number: 5186273
  • Archival Resource Key: ark:/67531/metadc1061554

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Office of Scientific & Technical Information Technical Reports

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Creation Date

  • March 1, 1988

Added to The UNT Digital Library

  • Jan. 22, 2018, 7:23 a.m.

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  • Feb. 1, 2018, 7 p.m.

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Estes, G.P.; Schrandt, R.G. & Kriese, J.T. Automated MCNP photon source generation for arbitrary configurations of radioactive materials and first-principles calculations of photon detector responses, report, March 1, 1988; New Mexico. (digital.library.unt.edu/ark:/67531/metadc1061554/: accessed October 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.