Abstract
Maximum permissible absorbed doses of 60Co ionizing radiation were first measured in thin (1 mm) polystyrene scintillator samples at simultaneous irradiation by 0.01–1 Gy s−1 gamma radiation and ∼1016 cm2 s−1 light in vacuum. It was shown that photoradiation resistance (unlike radiation resistance) is not increased if samples are placed into vacuum and all other conditions are preserved the same. The process of formation in the polymer of unsaturated conjugated structures, whose fraction is independent of oxygen content and supply, is probably responsible for the loss of light yield.
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Original Russian Text © L.N. Zaitsev, S.L. Zaitsev, A.D. Kovalenko, V.P. Sidorin, E.P. Cherevatenko, 2007, published in Pis’ma v Zhurnal Fizika Elementarnykh Chastits i Atomnogo Yadra, 2007, No. 1 (137), pp. 157–162.
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Zaitsev, L.N., Zaitsev, S.L., Kovalenko, A.D. et al. Investigation of photoradiation resistance of polystyrene scintillators in vacuum. Phys. Part. Nuclei Lett. 4, 96–98 (2007). https://doi.org/10.1134/S1547477107010177
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DOI: https://doi.org/10.1134/S1547477107010177