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The effect of gamma-irradiation on positronium formation in polyethylene
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- Hirade, T (author)
- Japan Atom Energy Res Inst, Dept Mat Sci, Tokai, Ibaraki 3191195, Japan Japan Atom Energy Res Inst, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan
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- Kumada, T (author)
- Japan Atom Energy Res Inst, Dept Mat Sci, Tokai, Ibaraki 3191195, Japan Japan Atom Energy Res Inst, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan
- (creator_code:org_t)
- 2001
- 2001
- English.
- In: Radiation Physics and Chemistry. - 0969-806X .- 1879-0895. ; 60:4-5, s. 541-544
- Journal article (peer-reviewed)
Abstract
Subject headings
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- The effect of gamma -irradiation on positronium (Ps) formation, especially the decrement of Ps formation at room temperature, was studied in linear poly(ethylene). We found that chemical changes, such as oxidation, cross-linking, or radicals created by gamma -irradiation of similar to 50 kGy do not affect Ps formation very much. The decrement of Ps formation was probably caused by a temporary change of physical structure by irradiation that disappears by anneals in the temperature range from room temperature to 120 degreesC, gradually. (C) 2001 Elsevier Science Ltd. All rights reserved.
Keyword
- positronium
- poly(ethylene)
- gamma-irradiation
- radicals
- NATURAL SCIENCES
- NATURVETENSKAP
Publication and Content Type
- ref (subject category)
- art (subject category)
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