Positron annihilation studies of materials

David J. Keeble, U. Brossmann, W. Puff, R. Wurschum

    Research output: Chapter in Book/Report/Conference proceedingChapter (peer-reviewed)


    Positron annihilation provides sensitive and versatile probe techniques in materials science that can characterize electronic structure and vacancy-type, open volume, defects. The techniques utilize the information carried by the photons that result from the quantum relativistic process of the annihilation of a positron with its antiparticle the electron. For the implanted positron, the time to the annihilation event with a host electron depends on the electron density of the local environment probed. Annihilation normally results in the conversion to two anticolinear ? photons, this emitted radiation carries information on the momentum of the electron -positron pair at the instant of annihilation.

    The present article focuses on the standard e+ annihilation methods applied to the study of defects in materials. Current developments in e+ annihilation are briefly described.

    Original languageEnglish
    Title of host publicationCharacterization of materials
    EditorsElton N. Kaufmann
    Place of PublicationHoboken, N.J.
    PublisherJohn Wiley & Sons Inc.
    Number of pages7
    Volume3 vols
    ISBN (Electronic)9780471266969
    ISBN (Print)9781118110744
    Publication statusPublished - 1 Dec 2012


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