Absorbed Dose Distributions in Small Copper Wire Insulation due to Multiple-Sided Irradiations by 0.4 MeV Electrons

Arne Miller, W. L. McLaughlin, Walther Batsberg Pedersen, K. Pejtersen

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    When scanned electron beams are used to crosslink polymeric insulation of wire and cable, an important goal is to achieve optimum uniformity of absorbed dose distributions. Accurate measurements of dose distributions in a plastic dosimeter simulating a typical insulating material (polyethylene) surrounding a copper wire core show that equal irradiations from as few as four sides give approximately isotropy and satisfactorily uniform energy depositions around the wire circumference. Electron beams of 0.4 MeV maximum energy were used to irradiate wires having a copper core of 1.0 mm dia. and insulation thicknesses between 0.4 and 0.8 mm. The plastic dosimeter simulating polyethylene insulations was a thin radiochromic polyvinyl butyral film wrapped several times around the copper wire, such that when unwrapped and analyzed optically on a scanning microspectrophotometer, high-resolution radial and depth-dose profiles could be determined.
    Original languageEnglish
    JournalRadiation Physics and Chemistry
    Volume13
    Issue number5-6
    Pages (from-to)181-186
    ISSN0969-806X
    DOIs
    Publication statusPublished - 1979

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