Depth profile analysis and high-resolution surface mapping of lithium isotopes in solids using laser-induced breakdown spectroscopy (LIBS) - CEA - Commissariat à l’énergie atomique et aux énergies alternatives Access content directly
Journal Articles Spectrochimica Acta Part B: Atomic Spectroscopy Year : 2024

Depth profile analysis and high-resolution surface mapping of lithium isotopes in solids using laser-induced breakdown spectroscopy (LIBS)

Abstract

Lithium isotopic analysis is of interest in various fields from biology to energy. In addition to analytical methods commonly used for that purpose, a new complementary method for determining the spatial resolution of isotopic ratio in solid samples was developed by Touchet et al. in 2020: laser induced self-reversal isotopic spectrometry (LIBRIS), derived from laser-induced breakdown spectroscopy (LIBS). In this paper, we present a proof of concept of fast spatially-resolved quantitative isotopic analysis of lithium by LIBS, both in depth (z resolution) and in configuration of high-resolution surface mapping (x and y resolution. First, a depth profile measurement where a 9% relative uncertainty on the 6Li isotopic ratio and 0.74 µm depth resolution is obtained. Then, we introduce the first high-resolution lithium isotopic mapping with a 3.3 µm lateral resolution and a typical 40% relative uncertainty on the 6Li isotopic ratio is obtained. Those results could be applied in the future to a large number of solid samples where fast information on the lithium isotopic distribution are needed, for instance in solid-state batteries development.
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Dates and versions

cea-04607774 , version 1 (11-06-2024)

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Doriane Gallot-Duval, Céline Quere, Eric de Vito, Jean-Baptiste Sirven. Depth profile analysis and high-resolution surface mapping of lithium isotopes in solids using laser-induced breakdown spectroscopy (LIBS). Spectrochimica Acta Part B: Atomic Spectroscopy, 2024, 215, pp.106920. ⟨10.1016/j.sab.2024.106920⟩. ⟨cea-04607774⟩
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