Effect of prior structural defects in quartz fiber lightguides on defect formation by γ radiation

N. Akchurin, M. Kh Ashurov, M. I. Baidzhanov, Zh D. Ibragimov, I. R. Rustamov, É M. Gasanov, I. Nuritdinov, B. S. Yuldashev

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Abstract

The absorption spectra of unirradiated and irradiated (to fast neutron fluence 1012 and1014 cm-2 in VVR-SM) quartz-quartz fibers after additional irradiation with 60Co γ rays to 108 rad are investigated. It is shown that neutrons transform E centers into Si-Si centers. The kinetics of accumulation of bridge oxygen atoms under the action of γ radiation exhibits two stages. The first stage is due to neutron irradiation and the manifestation of preliminary potential centers of nonbridge oxygen atoms. The second stage is associated with the creation of additional nonbridge oxygen atoms under the action of γ radiation. The γ-ray dose for the onset of the second stage decreases as the fluence of the preliminary neutron irradiation increases.

Original languageEnglish
Pages (from-to)33-37
Number of pages5
JournalAtomic Energy
Volume104
Issue number1
DOIs
StatePublished - Jan 2008

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    Akchurin, N., Ashurov, M. K., Baidzhanov, M. I., Ibragimov, Z. D., Rustamov, I. R., Gasanov, É. M., Nuritdinov, I., & Yuldashev, B. S. (2008). Effect of prior structural defects in quartz fiber lightguides on defect formation by γ radiation. Atomic Energy, 104(1), 33-37. https://doi.org/10.1007/s10512-008-0006-x