Efficiency of generation of optical centers in KS-4V and KU-1 quartz glasses at neutron and gamma irradiation

Pure quartz glasses of KS-4V and KU-1 types are candidates for optical plasma diagnostic system in ITER. The purpose of experiment was to study the efficiency of defect production in these glasses under irradiation with 60Со γ-quanta (5.7Gy/s) dose range of 102–107Gy and the fission reactor neutrons...

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Bibliographic Details
Published in:Journal of nuclear materials 2013-11, Vol.443 (1-3), p.393-397
Main Authors: Islamov, A.Kh, Salikhbaev, U.S., Ibragimova, E.M., Nuritdinov, I., Fayzullaev, B.S., Vukolov, K.Yu, Orlovskiy, I.
Format: Article
Language:English
Subjects:
Absorption spectra
Distortion
Gamma irradiation
Glass
Irradiation
Nuclear reactors
Photoluminescence
Plasma diagnostics
Silica glass
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Summary:Pure quartz glasses of KS-4V and KU-1 types are candidates for optical plasma diagnostic system in ITER. The purpose of experiment was to study the efficiency of defect production in these glasses under irradiation with 60Со γ-quanta (5.7Gy/s) dose range of 102–107Gy and the fission reactor neutrons in the fluency range of 1020–1023n/m2 and gammas simulating the plasma influence. In KU-1 (1000ppm OH) the accumulation kinetics of E′-(5.75eV) and NBO-(1.9eV) centers at γ-doses⩾5×105Gy and neutron fluencies 1021n/m2 in KS-4V the photoluminescence band at 2.7eV is more intensive and distorts a diagnosed signal. The transparency in 3.5–1.2eV at fluencies >1021n/m2 is higher in KU-1 than KS-4V.
ISSN:0022-3115
1873-4820
DOI:10.1016/j.jnucmat.2013.07.027