Spallation Radiation Damage Calculations and Database: Cross-Section Discrepancies between the Codes

    Volume 3, Issue 7 (July 2006)

    ISSN: 1546-962X

    CODEN: JAIOAD

    Page Count: 8


    Lu, Wei
    Research Associate, North Carolina State University, Raleigh, NC

    Wechsler, MS
    Adjunct Professor, North Carolina State University, Raleigh, NC

    Ferguson, PD
    Neutronics Team Leader, Spallation Neutron Source, Oak Ridge National Laboratory, Oak Ridge, TN

    Pitcher, EJ
    Deputy Group Leader for Nuclear Physics, Los Alamos National Laboratory, Los Alamos, NM

    (Received 20 June 2005; accepted 19 April 2006)

    Abstract

    A radiation damage database at NCSU is described that contains, at present, cross sections for damage energy, displacements, helium, and hydrogen. For neutrons and protons at 20-3200 MeV energies, the targets include 23 target elements from Mg to U and eight practical alloys. The underlying calculations employ Bertini, ISABEL, and CEM2k intranuclear cascade models as provided within MCNPX, three level-density formulations (GCCI, HETC, and Jülich), and multistage pre-equilibrium model (MPM) on and off. The database also includes radiation damage cross sections for lower-energy neutrons and protons, as obtained from LA150, SPECTER, ENDF, and SRIM. Examples of the database contents are provided with regard to damage energy and displacement cross sections for neutrons on Al, Fe, and W. Also, neutron flux and displacement rate calculations are described for neutrons on Fe and the 316 stainless steel mercury container vessel at SNS. In addition, discrepancies between the codes are discussed.


    Paper ID: JAI13467

    DOI: 10.1520/JAI13467

    ASTM International is a member of CrossRef.

    Author
    Title Spallation Radiation Damage Calculations and Database: Cross-Section Discrepancies between the Codes
    Symposium Reactor Dosimetry, 12th International Symposium, 2005-05-13
    Committee E10