Defect Formation and Performance Degradation Law of Quartz Glass in Neutron-Gamma Composite Radiation Fields

doi:10.16552/j.cnki.issn1001-1625.2025.0513

Abstract

Abstract: This study investigated the optical performance evolution law and applicability of quartz glass in low dose rate radiation environments through composite irradiation based on real-condition radiation fields. The spectral transmittance of quartz glass was measured across 200~2 000 nm. The results indicate that as the irradiation dose increases, the transmittance and absorption of quartz glass in the visible and near-infrared bands remain unchanged, while in the ultraviolet band (200~400 nm), light absorption significantly increases, and transmittance decreases with higher irradiation doses. In addition to the intrinsic defects such as oxygen vacancies (5.1 eV) and Si—E′ centers (6.1 eV), composite irradiation induces the formation of peroxy peroxygen-linked defects with a central wavelength of 4.3 eV in quartz glass. Under shortened mission durations conditions, the transmittance degradation of quartz glass in low-dose-rate radiation environments fully meets the optical performance requirements for fiber processing equipment and industrial robot vision inspection systems.

Key words: quartz glass, composite irradiation, transmittance, absorption spectrum, defect

CLC Number:

TQ171.1

LI Li, FAN Lianbin, YANG Bo, WANG Xicheng, WU Xinjian, XING Long. Defect Formation and Performance Degradation Law of Quartz Glass in Neutron-Gamma Composite Radiation Fields[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2025, 44(10): 3844-3852.

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