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Positron lifetimes and lineshape factors in deformed copper

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Abstract

Measurements of positron annihilation lifetime and lineshape factors in deformed OFHC copper, for 14 different pairs of specimen, ranging up to 66% deformation, are discussed. The influence of annihilation in the source is carefully examined and the data are consequently corrected. The lifetime varies from (124±2) ps for annealed copper to (179±2) ps for dislocation saturated samples.

Trapping cross sections and trapping efficiencies are calculated. The possibility of interference of vacancies formed during the deformation is discussed.

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Author notes

  1. L. Dorikens-Vanpraet (Research worker of the I.I.K.W.) & D. Segers (Research worker of the I.I.K.W.)

    Present address: , Brussels, Belgium

Authors and Affiliations

  1. Rijksuniversiteit Gent, Natuurkundig Laboratorium, I.N.W., Proeftuinstraat, 86, B-9000, Gent, Belgium

    C. Dauwe, M. Dorikens, L. Dorikens-Vanpraet (Research worker of the I.I.K.W.) & D. Segers (Research worker of the I.I.K.W.)

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  1. C. Dauwe
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  2. M. Dorikens
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  3. L. Dorikens-Vanpraet
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  4. D. Segers
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Dauwe, C., Dorikens, M., Dorikens-Vanpraet, L. et al. Positron lifetimes and lineshape factors in deformed copper. Appl. Phys. 5, 117–120 (1974). https://doi.org/10.1007/BF00928222

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  • DOI: https://doi.org/10.1007/BF00928222

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