Calculation of neutron cross sections on iron up to 40 MeV

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The development of high energy d + Li neutron sources for fusion materials radiation damage studies will require neutron cross sections up to 40 MeV. Experimental data above 15 MeV are generally sparse or nonexistent, and reliance must be placed upon nuclear-model calculations to produce the needed cross sections. To satisfy such requirements for the Fusion Materials Irradiation Test Facility (FMIT), neutron cross sections have been calculated for /sup 54/ /sup 56/Fe between 3 and 40 MeV. These results were joined to the existing ENDF/B-V evaluation below 3 MeV. In this energy range, most neutron reactions can be described using ... continued below

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Pages: 5

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Arthur, E.D. & Young, P.G. January 1, 1980.

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Description

The development of high energy d + Li neutron sources for fusion materials radiation damage studies will require neutron cross sections up to 40 MeV. Experimental data above 15 MeV are generally sparse or nonexistent, and reliance must be placed upon nuclear-model calculations to produce the needed cross sections. To satisfy such requirements for the Fusion Materials Irradiation Test Facility (FMIT), neutron cross sections have been calculated for /sup 54/ /sup 56/Fe between 3 and 40 MeV. These results were joined to the existing ENDF/B-V evaluation below 3 MeV. In this energy range, most neutron reactions can be described using the Hauser-Feshbach statistical model with corrections for preequilibrium and direct-reaction effects. To properly use these models to obtain realistic cross sections, emphasis must be placed upon the determination of suitable input parameters (optical model sets, gamma-ray strength functions, level densities) valid over the energy range of the calculation. To do this, several types of independent data were used to arrive at consistent parameter sets as described.

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Pages: 5

Notes

Dep. NTIS, PC A02/MF A01.

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  • American Nuclear Society annual meeting, Las Vegas, NV, USA, 8 Jun 1980

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  • Report No.: LA-UR-80-35
  • Report No.: CONF-800607-2
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 5563724
  • Archival Resource Key: ark:/67531/metadc1087468

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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.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • January 1, 1980

Added to The UNT Digital Library

  • Feb. 10, 2018, 10:06 p.m.

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  • Feb. 20, 2018, 9:53 p.m.

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Arthur, E.D. & Young, P.G. Calculation of neutron cross sections on iron up to 40 MeV, article, January 1, 1980; United States. (digital.library.unt.edu/ark:/67531/metadc1087468/: accessed April 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.