Thermal-spike lifetime from picosecond-duration preequilibrium effects in hyperfine magnetic fields following ion implantation

Andrew E. Stuchbery, Eva Bezakova

    Research output: Contribution to journalArticlepeer-review

    30 Citations (Scopus)

    Abstract

    The effective hyperfine magnetic fields acting on short-lived excited nuclear states (27<t<127ps) have been measured for ∼7.5MeV Ir and Pt ions immediately after implantation into iron hosts at room temperature. The observed field strengths decrease with the lifetime of the probe state and are consistent with the hyperfine field being absent for about 6 ps after implantation. As the hyperfine field is quenched while the local temperature exceeds the Curie temperature, these results give a direct measurement of the thermal-spike lifetime.

    Original languageEnglish
    Pages (from-to)3637-3640
    Number of pages4
    JournalPhysical Review Letters
    Volume82
    Issue number18
    DOIs
    Publication statusPublished - 1999

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