光学精密工程2025，Vol.33Issue(13)：1999-2007,9.DOI:10.37188/OPE.20253313.1999
激光诱导铝等离子体结构演化及传播机制
Structural evolution and propagation mechanism of laser-induced aluminum plasma
摘要
Abstract
A high space-time resolution imaging system with 1 ns temporal resolution and 0.01 mm spatial resolution was established.The dynamic spatial distributions of neutral atoms(Al Ⅰ/Ar Ⅰ)and singly ion-ized atoms(Al Ⅱ/Ar Ⅱ)in plasma induced by 10 GW/cm2 are measured in argon gas.The experimental results show that the plasma has an elongated morphology,and axial expansion velocity is faster than radi-al velocity.Due to the strong coupling between laser and argon,the shocked gas layer has a high ioniza-tion degree,and argon ions overlap with aluminum vapor plume.The morphological characteristics are consistent with the laser-supported detonation(LSD)wave.Additionally,the lifetimes of different spe-cies are also discussed,and the influence of upper-level energy and ion recombination on population decay rate is elucidated.This work overcomes the limitation of traditional imaging techniques,which only obtain line-of-sight integrated intensity.A novel method for observing the distribution structure of species and the expansion process.The spatiotemporal evolution of plasma is expected to provide theoretical support for the application of high-precision laser-induced breakdown spectroscopy(LIBS).关键词
激光光谱/激光诱导等离子体/激光支持爆轰波/粒子分布Key words
laser spectroscopy/laser-induced plasma/laser supports detonation waves/species distribu-tion分类
数理科学引用本文复制引用
赵洋,张雷,田志辉,张秀清,马维光,尹王保..激光诱导铝等离子体结构演化及传播机制[J].光学精密工程,2025,33(13):1999-2007,9.基金项目
国家重点研发计划资助项目(No.2017YFA0304203) （No.2017YFA0304203）
长江学者和创新团队发展计划资助项目(No.IRT_17R70) （No.IRT_17R70）
国家自然科学基金资助项目(No.12404467,No.12374377,No.61975103,No.627010407) （No.12404467,No.12374377,No.61975103,No.627010407）
国家能源石油炼制技术研发中心资助项目(RIPP,SINOPEC) （RIPP,SINOPEC）
山西省科技重大专项(No.201804D131036) （No.201804D131036）
111计划资助项目(No.D18001) （No.D18001）
山西省"1331工程"重点学科建设计划资助项目 （）
山西省基础研究计划项目(No.202203021212122,No.202103021223210) （No.202203021212122,No.202103021223210）
湖北省教育厅科学研究计划项目(No.B2023162) （No.B2023162）
