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

    Published: 01 January 2007

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    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.


    aluminum, codes, damage energy, cross sections, database, displacements, flux, iron, neutron irradiation, proton irradiation, radiation damage, spallation, tungsten

    Author Information:

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

    Wechsler, Monroe S.
    Adjunct Professor, North Carolina State University, Raleigh, NC

    Ferguson, Phillip D.
    Neutronics Team Leader, Spallation Neutron Source, Oak Ridge National Laboratory, Oak Ridge, TN

    Pitcher, Eric J.
    Deputy Group Leader for Nuclear Physics, Los Alamos National Laboratory, Los Alamos, NM

    Committee/Subcommittee: E10.08

    DOI: 10.1520/STP45446S