金薄膜的紫外自由电子激光单次损伤阈值研究。

Study on the UV FEL single-shot damage threshold of an Au thin film.

作者信息

Wu Meiyi, Li Qinming, Wang Mingchang, Zhu Qinghao, Cai Jiandong, Xu Zhongmin, Zhou Hao, Huang Long, Zhang Bingbing, Qi Runze, Zhang Zhe, Li Wenbin, Zhong Yinpeng, Zhang Weiqing

机构信息

Institute of Advanced Science Facilities, Shenzhen 518107, People's Republic of China.

State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People's Republic of China.

出版信息

J Synchrotron Radiat. 2024 Sep 1;31(Pt 5):1010-1018. doi: 10.1107/S1600577524005332. Epub 2024 Jul 23.

DOI:10.1107/S1600577524005332

PMID:39042579

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11371058/

Abstract

The damage threshold of an Au-coated flat mirror, one of the reflective optics installed on the FEL-2 beamline of the Dalian Coherent Light Source, China, upon far-UV free-electron laser irradiation is evaluated. The surface of the coating is characterized by profilometer and optical microscope. A theoretical approach of the phenomenon is also presented, by application of conventional single-pulse damage threshold calculations, a one-dimensional thermal diffusion model, as well as finite-element analysis with ANSYS.

摘要

对安装在中国大连相干光源FEL-2光束线上的反射光学元件之一——镀金光镜在远紫外自由电子激光辐照下的损伤阈值进行了评估。通过轮廓仪和光学显微镜对涂层表面进行了表征。还通过应用传统的单脉冲损伤阈值计算、一维热扩散模型以及使用ANSYS进行有限元分析，提出了该现象的理论方法。