The effect of γ-irradiation on positronium formation in polyethylene
The effect of γ-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 γ-irradiation of ∼50 kGy do not affect Ps formation...
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| Veröffentlicht in: | Radiation physics and chemistry (Oxford, England : 1993) England : 1993), 2001, Vol.60 (4), p.541-544 |
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| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | eng |
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| Online-Zugang: | Volltext |
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| Zusammenfassung: | The effect of
γ-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
γ-irradiation of ∼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°C, gradually. |
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| ISSN: | 0969-806X 1879-0895 1879-0895 |
| DOI: | 10.1016/S0969-806X(00)00401-1 |