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The effect of γ-irradiation on the optical properties of polyoxymethylene compacts

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Abstract

The effects of γ-irradiation on the optical properties of polyoxymethylene (POM) compacts are studied at room temperature. A UV-visible spectrometer is used to study the optical absorbency in the wavelength range 200–1100 nm. The optical energy of both direct and indirect transitions as well as the energy band tail ΔE is determined as a function of γ exposure dose. The results obtained showed that the POM compacts became brittle as the γ-radiation dose reaches 5 Mrad. In the meanwhile, the wavelength of the optical band tail λg increases to a maximum at 2 Mrad and the energy band tail ΔE reaches 5 eV at the same dose. Both direct and indirect energies of transition decrease with the irradiation dose. The results can be explained on the basis of γ-irradiation-induced changes due to cross-linking in the POM.

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Authors and Affiliations

  1. Physics Department, Faculty of Science, Alexandria University, Egypt

    M. E. Kassem & M. E. Bassiouni

  2. Physics Department, Qatar University, Doha, Qatar

    M. El-Muraikhi

Authors
  1. M. E. Kassem
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  2. M. E. Bassiouni
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  3. M. El-Muraikhi
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Kassem, M.E., Bassiouni, M.E. & El-Muraikhi, M. The effect of γ-irradiation on the optical properties of polyoxymethylene compacts. Journal of Materials Science: Materials in Electronics 13, 717–719 (2002). https://doi.org/10.1023/A:1021513021359

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