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Analysis of the Influence of Laser Surface Irradiation Regimes in the Diagnostics of Hydrogen Isotope Retention

  • SEPARATION AND APPLICATION OF ISOTOPES. MASS SPECTROMETRY
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Abstract

The paper compares the laser-assisted quadrupole mass spectrometry for two laser pulses (15 ns and 80 ps) for W-D films and Ti–V alloy with deuterium. A technique for the production of samples with high concentrations of trapped deuterium, which makes it possible to obtain a good signal repeatability on a quadrupole mass spectrometer for several laser shots, is presented, which can be used to align a diagnostic laser system. The experimental dependence of the total deuterium yield from the studied materials on the energy density is obtained. The high sensitivity of the technique, as well as a weak dependence on the laser pulse duration, is demonstrated. A significant change in the deuterium concentration in the near-surface layer of the tungsten film during contact with the atmosphere is noted.

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Funding

Section 2 of the work was supported by the Ministry of Science and Higher Education of the Russian Federation, contract no. 0723-2020-0043.

Section 3 of the work was supported by the Russian Science Foundation, grant 22-12-00360 “Laser Diagnostics of Hydrogen Isotope Retention in Tokamak Materials Interacting with Plasma.”

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Authors and Affiliations

  1. National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), 115409, Moscow, Russia

    N. E. Efimov, D. N. Sinelnikov, M. V. Grishaev, Yu. M. Gasparyan, V. S. Efimov & S. A. Krat

  2. Saint Petersburg State University, 199034, St. Petersburg, Russia

    N. E. Efimov & Yu. M. Gasparyan

Authors
  1. N. E. Efimov
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  2. D. N. Sinelnikov
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  3. M. V. Grishaev
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  4. Yu. M. Gasparyan
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  5. V. S. Efimov
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  6. S. A. Krat
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Correspondence to N. E. Efimov.

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Translated by N. Petrov

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Efimov, N.E., Sinelnikov, D.N., Grishaev, M.V. et al. Analysis of the Influence of Laser Surface Irradiation Regimes in the Diagnostics of Hydrogen Isotope Retention. Phys. Atom. Nuclei 86, 2173–2179 (2023). https://doi.org/10.1134/S1063778823100137

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  • DOI: https://doi.org/10.1134/S1063778823100137

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