LIBS depth profiling of Be-containing samples with different gaseous impurity concentrations

Bhat, P.G.; Veis, P.; Marín Roldán, A.; Karhunen, J.; Paris, P.; Jõgi, I.; Hakola, A.; Likonen, J.; Almaviva, S.; Gromelski, W.; Ladygina, M.; Gasior, P.; Ristkok, J.; Bogdanović Radović, Ivančica; Siketić, Zdravko; Romanenko, O.; Porosnicu, C.; Lungu, C. (2023) LIBS depth profiling of Be-containing samples with different gaseous impurity concentrations. Nuclear Materials and Energy, 37 . ISSN 23521791

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Abstract

Understanding the interaction between the fusion plasma and the plasma-facing materials (PFMs) is crucial for achieving the optimal performance, safety, and lifetime of the fusion devices. Relevant materials have been intensely studied to determine fuel retention and the composition of the co-deposited layers on the PFMs by depth profile analysis using Laser-Induced Breakdown Spectroscopy (LIBS) and Calibration-Free (CF)-LIBS. However, the comparison between the layers containing a mixture of different (seeding) gases using LIBS, has not been studied systematically. Consequently, the aim of this work is the LIBS depth profile analysis of Be-based samples containing the fuel (D) and one of the seeding gases (N, Ne, He) with variable concentrations to study the potential impact on fuel retention in the PFMs. The LIBS measurements were performed using Nd:YAG laser (1064 nm) under Ar atmosphere (at 2 and 100 mbar). In LIBS the ablation rate was evaluated, spectral lines of all relevant elements except N and Ne were detected and compared with the SIMS depth profiles. The reasons for the non-detectability of Ne are discussed in detail.

Item Type:	Article
Uncontrolled Keywords:	LIBS depth profiles ; Be-containing samples ; deuterium ; seeding gases ; neon detectability ; ablation rates
Subjects:	NATURAL SCIENCES > Physics
Divisions:	Division of Experimental Physics
Projects:	Project title Project leader Project code Project type Provedba aktivnosti opisanih u Roadmap to Fusion tijekom Horizon 2020 kroz Zajednički program članova konzorcija EUROfusion Tonči Tadić 101052200 UNSPECIFIED
Depositing User:	Zdravko Siketić
Date Deposited:	30 Sep 2025 09:47
URI:	http://fulir.irb.hr/id/eprint/10030
DOI:	10.1016/j.nme.2023.101549

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