Study of the Surface of Al/MgF2 Mirrors after Exposure to High-Intensity VUV Radiation
https://doi.org/10.56304/S2079562923010190
Abstract
The degradation of the surface of the Al/MgF2 mirror coating under influence of UV radiation is investigated. The source of VUV radiation is erosion-type magneto-plasma compressor. Discharge is carried out in different gases (neon, argon, air) to control radiation spectrum. Roughness, 2D and 3D profiles, depth of cracks on the surface of the samples were studied using micronanoprofilometer. If the energy of quanta reaching the sample is less than 6 eV, slight increase of roughness and no cracks are observed on the surface of the sample. Energy of quanta is 6–15 eV – MgF2 layer partly-completely evaporates, roughness increases gradually, depth of the cracks reaches 55 nm. Energy of quanta is less than 21 eV – coating completely evaporates, degradation of the substrate with the cracks (depth – less than 200 nm) is observed.
About the Authors
D. S. Pasynkova
Bauman Moscow State Technical University
Russian Federation
Russian Federation
Moscow, 105005
P. A. Novikov
LUCH Research and Production Association, Research and Development Institute
Russian Federation
Russian Federation
Podolsk, Moscow oblast, 142103
D. O. Novikov
Bauman Moscow State Technical University
Russian Federation
Russian Federation
Moscow, 105005
V. D. Telekh
Bauman Moscow State Technical University
Russian Federation
Russian Federation
Moscow, 105005
D. A. Chesnokov
LUCH Research and Production Association, Research and Development Institute
Russian Federation
Russian Federation
Podolsk, Moscow oblast, 142103
V. G. Zhupanov
LUCH Research and Production Association, Research and Development Institute
Russian Federation
Russian Federation
Podolsk, Moscow oblast, 142103
A. S. Skriabin
Bauman Moscow State Technical University
Russian Federation
Russian Federation
Moscow, 105005
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Review
For citations:
Pasynkova D.S., Novikov P.A., Novikov D.O., Telekh V.D., Chesnokov D.A., Zhupanov V.G., Skriabin A.S. Study of the Surface of Al/MgF2 Mirrors after Exposure to High-Intensity VUV Radiation. Nuclear Physics and Engineering. 2023;14(6):605-611. (In Russ.) https://doi.org/10.56304/S2079562923010190
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