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

Meiyi WuQinming LiMingchang WangQinghao ZhuJiandong CaiZhongmin XuHao ZhouLong HuangBingbing ZhangRunze QiZhe ZhangWenbin LiYinpeng ZhongWeiqing Zhang

Published in: Journal of synchrotron radiation (2024)

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.

Keyphrases

oxidative stress
finite element analysis
sensitive detection
high speed
high resolution
density functional theory
molecular dynamics
molecular dynamics simulations
radiation therapy
mass spectrometry
quantum dots