Fission neutron irradiation of copper containing implanted and transmutation produced helium

B.N. Singh, A. Horsewell, Morten Mostgaard Eldrup, F.A. Garner

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    High purity copper containing approximately 100 appm helium was produced in two ways. In the first, helium was implanted by cyclotron at Harwell at 323 K. In the second method, helium was produced as a transmutation product in 800 MeV proton irradiation at Los Alamos, also at 323 K. The distributions of helium prior to fission neutron irradiation were determined by a combination of transmission electron microscopy (TEM) and positron annihilation techniques (PAT). These specimens, together with pure copper, were then irradiated with fission neutrons in a single capsule in fast flux test facility (FFTF) at approximately 686 +/- 5 K to a dose level of approximately 48 dpa (7.7 X 10(26) nm-2; E > 0.1 MeV). Investigation of the void and dislocation microstructures in the three specimens by TEM showed large differences between the specimens in void size and swelling. The observed differences as well as the effect of the presence of other transmutation produced impurity atoms in the 800 MeV proton irradiated copper will be discussed.
    Original languageEnglish
    JournalJournal of Nuclear Materials
    Volume191-194
    Issue numberpart b
    Pages (from-to)1259-1264
    ISSN0022-3115
    DOIs
    Publication statusPublished - 1992
    Event5th International Conference on Fusion Reactor Materials (ICFRM-5) - Clearwater, FL, United States
    Duration: 17 Nov 199122 Nov 1991
    Conference number: 5

    Conference

    Conference5th International Conference on Fusion Reactor Materials (ICFRM-5)
    Number5
    CountryUnited States
    CityClearwater, FL
    Period17/11/199122/11/1991

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