Enhanced removal of X-ray-induced carbon contamination using radio-frequency Ar/H2 plasma

  • Yi Wang
  • Qi-Peng LuEmail author
  • Yun-Guo GaoEmail author
  • Xue-Peng Gong
  • Yuan Song


Removal of X-ray-induced carbon contamination on beamline optics was studied using radio-frequency plasma with an argon/hydrogen (Ar/H2) mixture. Experiments demonstrated that the carbon removal rate with Ar/H2 plasma was higher than that with pure hydrogen or argon. The possible mechanism for this enhanced removal was discussed. The key working parameters for Ar/H2 plasma removal were determined, including the optimal vacuum pressure, gas mixing ratio, and source power. The optimal process was performed on a carbon-coated multilayer, and the reflectivity was recovered.


Radio-frequency plasma X-ray irradiation Carbon contamination 


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Copyright information

© China Science Publishing & Media Ltd. (Science Press), Shanghai Institute of Applied Physics, the Chinese Academy of Sciences, Chinese Nuclear Society and Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  1. 1.State Key Laboratory of Applied Optics, Changchun Institute of Optics and Fine Mechanics and PhysicsChinese Academy of SciencesChangchunChina
  2. 2.University of Chinese Academy of SciencesBeijingChina

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