Investigation of the Laser Radiation Focusing Effect on the Sensitivity of Analysis of the Hydrogen Isotope Content in Plasma-Deposited Layers
https://doi.org/10.1134/S2079562920040089
Abstract
- The efficiency of the laser-induced desorption method as a detector of hydrogen isotopes under pulsed laser irradiation (wavelength 1064 nm, 100 mJ, duration 10 ns) for different power densities of incident radiation on deuterium-saturated thin titanium films was investigated. When the power flow density increases by 16 times, the intensity of the thermal desorption peak increases by more than 2 orders of magnitude. Longterm repeated irradiation of the surface does not lead to significant depletion of the content of hydrogen isotopes in the studied layers, allowing their further ex-situ analysis.
Keywords
laser-induced desorption,
hydrogen accumulation,
measurement techniques,
thermal desorption spectroscopy
Supporting agencies: The work was carried out with the support of a grant from the Russian Federation Russian Scientific Foundation No. 17-12-01575
About the Authors
S. А. Krat
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Russian Federation
Russian Federation
115409; Moscow
А. P. Kharina
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Russian Federation
Russian Federation
115409; Moscow
I. А. Sorokin
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute); Fryazino Branch, Kotelnikov Institute of Radioengineering and Electronics, Russian Academy of Sciences
Russian Federation
Russian Federation
115409; Moscow; 141120; Moscow oblast; Fryazino
V. А. Kostyushin
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Russian Federation
Russian Federation
115409; Moscow
Е. D. Vovchenko
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Russian Federation
Russian Federation
115409; Moscow
V. А. Kurnaev
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Russian Federation
Russian Federation
115409; Moscow
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Review
For citations:
Krat S.А., Kharina А.P., Sorokin I.А., Kostyushin V.А., Vovchenko Е.D., Kurnaev V.А. Investigation of the Laser Radiation Focusing Effect on the Sensitivity of Analysis of the Hydrogen Isotope Content in Plasma-Deposited Layers. Nuclear Physics and Engineering. 2020;11(4):195-201. (In Russ.) https://doi.org/10.1134/S2079562920040089
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