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Microstructure variation in fused silica irradiated by different fluence of UV laser pulses with positron annihilation lifetime and Raman scattering spectroscopy
Li, CH; Zheng, WG; Zhu, QH; Chen, J; Wang, BY; Ju, X; Wang BY(王宝义)
2016
发表期刊NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
卷号384页码:23-29
摘要We present an original study on the non-destructive evaluation of the microstructure evolution of fused silica induced by pulsed UV laser irradiation at low fluence (less than 50% F-th). Positron annihilation spectroscopy discloses that the spatial size of the vacancy cluster is increased exponentially with the linearly elevated laser fluence. Particularly, the vacancy cluster size in bulk silica is significantly increased by 14.5% after irradiated by pulsed 355 nm laser at F = 14 J/cm(2) (50% F-th), while the void size varies only 2%. UV laser-excited Raman results suggest that the bond length and average bond angle of Si-O-Si bridging bond are both slightly reduced. Results reveals that the rearrangement process of (Si-O)(n) fold rings and breakage of the Si-O bridging bond in bulk silica occurred during pulsed UV laser irradiation. The micro-structural changes were taken together to clarify the effect of sub-threshold laser fluence on material stability of silica glass. The obtained data provide important information for studying material stability and controlling the lifetime of fused silica optics for high power laser system. (C) 2016 Elsevier B.V. All rights reserved.
文章类型期刊论文
关键词Fused silica Microstructure variation Laser damage Positron annihilation lifetime Raman spectroscopy
DOI10.1016/j.nimb.2016.07.018
关键词[WOS]NATIONAL-IGNITION-FACILITY ; EXIT-SURFACE ; DAMAGE PRECURSORS ; INDUCED BREAKDOWN ; AMORPHOUS SILICA ; VITREOUS SILICA ; INDUCED DEFECTS ; HIGH-PRESSURE ; 351 NM ; GROWTH
语种英语
WOS类目Instruments & Instrumentation ; Nuclear Science & Technology ; Physics, Atomic, Molecular & Chemical ; Physics, Nuclear
WOS记录号WOS:000383941400004
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/260332
专题多学科研究中心
作者单位中国科学院高能物理研究所
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GB/T 7714
Li, CH,Zheng, WG,Zhu, QH,et al. Microstructure variation in fused silica irradiated by different fluence of UV laser pulses with positron annihilation lifetime and Raman scattering spectroscopy[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS,2016,384:23-29.
APA Li, CH.,Zheng, WG.,Zhu, QH.,Chen, J.,Wang, BY.,...&王宝义.(2016).Microstructure variation in fused silica irradiated by different fluence of UV laser pulses with positron annihilation lifetime and Raman scattering spectroscopy.NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS,384,23-29.
MLA Li, CH,et al."Microstructure variation in fused silica irradiated by different fluence of UV laser pulses with positron annihilation lifetime and Raman scattering spectroscopy".NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS 384(2016):23-29.
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