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<p>The paper concerns gamma-ray irradiation of cyclic olefin copolymers (COCs). The irradiation occurred in panoramic gamma radiation (from 5.0 to 101.4&#xa0;kGy at a dose rate of 0.0522&#xa0;kGy/h) and well irradiation (from 115.6 to 1004.0&#xa0;kGy at a dose rate of 0.8&#xa0;kGy/h) facilities, both using a <sup>60</sup>Co source. The effect of irradiation was studied by measuring the refractive indices of the treated materials using dark-field spectroscopy at 532.0, 654.2, 846.4, 1308.2, 1549.1, and 1652.1&#xa0;nm. Other measurements, such as transmission spectra and changes in chromaticity coordinates, are also mentioned, as are the calculation of absorption coefficients and band gaps.</p>

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The effect of gamma-ray irradiation on the optical properties of cyclic olefin copolymers

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年2月25日

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  • Václav Prajzler,
  • Siegfried De Beuckelaer

摘要

The paper concerns gamma-ray irradiation of cyclic olefin copolymers (COCs). The irradiation occurred in panoramic gamma radiation (from 5.0 to 101.4 kGy at a dose rate of 0.0522 kGy/h) and well irradiation (from 115.6 to 1004.0 kGy at a dose rate of 0.8 kGy/h) facilities, both using a 60Co source. The effect of irradiation was studied by measuring the refractive indices of the treated materials using dark-field spectroscopy at 532.0, 654.2, 846.4, 1308.2, 1549.1, and 1652.1 nm. Other measurements, such as transmission spectra and changes in chromaticity coordinates, are also mentioned, as are the calculation of absorption coefficients and band gaps.