Analysis of LiSn alloy at several depths using LIBS

Suchoňová, M.; Krištof, Jaroslav; Pribula, Marek; Veis, M.; Tabarés, F.L.; Veis, P.

doi:10.1016/j.fusengdes.2016.08.010

Cited by 18 publications

(7 citation statements)

References 22 publications

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“…Another important distinction from the binary LiD β system is that the g D-D (r) in Li 30 Sn 70 D β exhibits a sharp peak at ~ 0.78 Å (bottom row in figure 2 These bubbles primarily consist of D 2 molecules, surrounded by a small amount of free D atoms and Li atoms that segregate towards the bubble from the liquid alloy. Li segregation to the surface of the D 2 bubble is not surprising: Li typically segregates towards the liquid surface in Li-Sn alloys due to its lower surface tension [19][20][21]. In this case, Li atoms segregate to the liquid surface in contact with the D 2 gas bubble.…”

Section: Static Structure and Creation Of D 2 Moleculesmentioning

confidence: 99%

“…Recently, the liquid Li-Sn alloy has attracted attention due to its improved properties over liquid Li and liquid Sn: a lower vapor pressure than Li [6,17,18], a reduction of plasma contamination from high-Z Sn atoms due to Li segregation to the alloy surface [19,20], and a significantly lower D retention than pure Li [12]. Since many properties of liquid Li-Sn alloys are still unknown, we previously studied various properties of liquid Li-Sn via first-principles molecular dynamics (FPMD) simulations at the two concentrations of interest for PFC applications, Li 30 Sn 70 and Li 20 Sn 80 [21], and obtained good agreement with available experimental data.…”

Section: Introductionmentioning

confidence: 99%

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Deuterium addition to liquid Li–Sn alloys: implications for plasma-facing applications

Río

Gautam

Carter³

2019

Nucl. Fusion

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Liquid metals are being explored actively as candidates for plasma-facing components (PFCs) in fusion reactors. Recently, Li–Sn alloys have appeared as promising alternatives that could overcome some of the challenges faced by the well-studied liquid Li system, namely, a vapor pressure that limits the operating temperature and a high hydrogen isotope retention. However, only scarce data (experimental or theoretical) are available concerning the performance of Li–Sn alloys, specifically only for the compositions of Li30Sn70 and Li20Sn80, related to their bonding and retention of deuterium (D). Here, we present a comprehensive, first-principles molecular-dynamics study of static and dynamic properties of liquid Li30Sn70 at various D concentrations. We observe the formation of D2 gas bubbles for β in Li30Sn70Dβ greater than 22.5 along with Li segregation towards D2 bubbles. To understand the effect of Sn addition on D retention in Li–Sn alloys, we perform a thermodynamic evaluation of maximum D retention in Li-rich Li–Sn alloys. Overall, this work will provide useful data and guidance in the development of Li–Sn PFCs in fusion reactors.

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Section: Static Structure and Creation Of D 2 Moleculesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Deuterium addition to liquid Li–Sn alloys: implications for plasma-facing applications

Río

Gautam

Carter³

2019

Nucl. Fusion

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“…Liquid metals are considered as an alternative to conventional metallic PFC with the main advantages of avoiding melting of leading edges, cracking or material properties deterioration subsequent to neutron irradiation. However, this solution comes with other issues which still need to be assessed, e.g., resilience to transients, tritium or metal evaporation retention [23]. Most of these are investigated experimentally in COMPASS for the first time under ELMy H-mode conditions in a tokamak divertor [24].…”

Section: Liquid Metal Divertor (Lmd) Experimentsmentioning

confidence: 99%

“…However, this solution comes with other issues which still need to be assessed, e.g. resilience to transients, tritium retention or metal evaporation [23]. Most of these are investigated experimentally in COM-PASS for the first time under ELMy H-mode conditions in a tokamak divertor [24].…”

Section: Liquid Metal Divertor (Lmd) Experimentsmentioning

confidence: 99%

Overview of the COMPASS results ^*

et al. 2022

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COMPASS addressed several physical processes that may explain the behaviour of important phenomena. This paper presents results related to main fields of COMPASS research obtained in the recent two years, including studies of turbulence, L-H transition, plasma material interaction, runaway electron, and disruption physics:  Tomographic reconstruction of the edge/SOL turbulence observed by a fast visible camera allowed to visualize turbulent structures without perturbing the plasma. Dependence of the power threshold on the X-point height was studied and related role of radial electric field in the edge/SOL plasma was identified. The effect of high-field-side error fields on the L-H transition was investigated in order to assess the influence of the central solenoid misalignment and the possibility to compensate these error fields by low-field-side coils. Results of fast measurements of electron temperature during ELMs show the ELM peak values at the divertor are around 80% of the initial temperature at the pedestal. Liquid metals were used for the first time as plasma facing material in ELMy H-mode in the tokamak divertor. Good power handling capability was observed for heat fluxes up to 12 MW/m 2 and no direct droplet ejection was observed.  Partial detachment regime was achieved by impurity seeding in the divertor. The evolution of the heat flux footprint at the outer target was studied.  Runaway electrons were studied using new unique systems -impact calorimetry, carbon pellet injection technique, wide variety of magnetic perturbations. Radial feedback control was imposed on the beam.  Forces during plasma disruptions were monitored by a number of new diagnostics for vacuum vessel motion in order to contribute to the scaling laws of sideways disruption forces for ITER. Current flows towards the divertor tiles, incl. possible short-circuiting through PFCs, were investigated during the VDE experiments. The results support ATEC model and improve understanding of disruption loads.

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“…124 Considerando todos os parâmetros envolvidos na CF e a complexidade de algumas matrizes, o método é preciso em análises envolvendo amostras fisicamente e quimicamente homogêneas, como ligas metálicas. 140,141 Recentemente, Babos et al 47 empregaram MEC para a determinação de Ca, Cu, Fe, Mn e Zn por LIBS, em amostras de suplementos minerais para bovinos. A MEC utiliza apenas dois padrões de calibração, para cada amostra, e vários comprimentos de onda de emissão do analito com diferentes sensibilidades para determinar a sua concentração na amostra.…”

Section: Abordagens Para Análise Qualitativa E Quantitativaunclassified

Laser Induced-Breakdown Spectroscopy (Libs): Histórico, Fundamentos, Aplicações E Potencialidades

Costa¹,

Augusto²,

Castro³

et al. 2019

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This review attempts to present a broad view of the technique laser-induced breakdown spectroscopy (LIBS), since its origin, fundamentals, sample preparation strategies, use of chemometric tools for data processing, the advantages and limitations with regard to qualitative and quantitative analysis, aplications and future trends as an analytical technique that is in consolidation in analytical chemistry. LIBS is a rapid and versatile, which is able of providing qualitative and quantitative analytical information for practically any sample, in a virtually non-destructive way, without any substantial sample preparation. The instrumentation is simple, robust, compact, and enables remote analysis. The advancement of the LIBS applications in the areas of agriculture, environmental, food, biological/pharmaceutical, forensic, metallurgy and electronic waste were discussed in detail in this review. We consider that this review will be an important tool concerning dissemination of the LIBS, mainly for audience of undergraduate courses, and disciplines related to instrumental analysis.

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Analysis of LiSn alloy at several depths using LIBS

Cited by 18 publications

References 22 publications

Deuterium addition to liquid Li–Sn alloys: implications for plasma-facing applications

Deuterium addition to liquid Li–Sn alloys: implications for plasma-facing applications

Overview of the COMPASS results ^*

Laser Induced-Breakdown Spectroscopy (Libs): Histórico, Fundamentos, Aplicações E Potencialidades

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Analysis of LiSn alloy at several depths using LIBS

Cited by 18 publications

References 22 publications

Deuterium addition to liquid Li–Sn alloys: implications for plasma-facing applications

Deuterium addition to liquid Li–Sn alloys: implications for plasma-facing applications

Overview of the COMPASS results *

Laser Induced-Breakdown Spectroscopy (Libs): Histórico, Fundamentos, Aplicações E Potencialidades

Contact Info

Product

Resources

About

Overview of the COMPASS results ^*