Temperature dependence of liquid Sn sputtering by low-energy He+ and D+ bombardment

Coventry, M. D.; Allain, Jean Paul; Ruzic, D. N.

doi:10.1016/j.jnucmat.2004.06.009

Cited by 22 publications

(13 citation statements)

References 23 publications

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“…Also important is an understanding of any changes in these responses due to elevated surface temperatures as such a divertor will be operated at high temperatures, particularly on a transient basis. Similar to that of other liquid metal PFC candidates [2][3][4][5], tinÕs sputtering yield due to low-energy, light ion bombardment exhibits clear temperature dependence [6,7].…”

Section: Introductionmentioning

confidence: 59%

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Incident-mass dependence of temperature-enhanced ion-induced sputtering in liquid metals

Coventry

Ruzic

2005

Journal of Nuclear Materials

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Section: Introductionmentioning

confidence: 59%

“…Fig. 1 shows previously-reported [6] light-ion data for comparison. While D + , He + , and Sn + are clearly the most useful incident ions to have sputtering yield information for a divertor design study, intermediate masses were used here to examine any scaling of the temperature dependence of the sputtering yields on incident mass.…”

Section: Introductionmentioning

confidence: 99%

Incident-mass dependence of temperature-enhanced ion-induced sputtering in liquid metals

Coventry

Ruzic

2005

Journal of Nuclear Materials

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“…At startup there was magnetic field without bias for a short time, which explains the low emission up to 473 K. The large deviations at 1173-1273 K, especially clear for the -40 V curve, are due to Sn-droplets migrating trough the view of For future experiments in the TEC facilities Pilot-PSI, Magnum-PSI and PSI-2 three main aspects of liquid metals are to be studied. Firstly the samples in PSI-2 will be made heatable to allow controlled temperature exposures especially with the focus on studying further the temperature enhanced erosion of Sn [21], in collaboration with Pilot-PSI at its higher steady state heatflux capabilities. Studying the erosion up to the limits set by evaporation is vital to understand the particle loss mechanisms.…”

Section: Plasma Exposures and Outlookmentioning

confidence: 99%

Liquid metals as alternative solution for the power exhaust of future fusion devices: status and perspective

Coenen

Temmerman

Federici³

et al. 2014

Phys. Scr.

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Abstract. Applying liquid metals as Plasma Facing Components for fusion powerexhaust can potentially ameliorate lifetime issues as well as limitations to the maximum allowed surface heat loads by allowing for a more direct contact with the coolant. The material choice has so far been focused on lithium (Li) as it showed beneficial impact on plasma operation. Here materials such as tin (Sn), gallium (Ga) and aluminum (Al) are discussed as alternatives potentially allowing higher operating temperatures without strong evaporation. Power loads of up to 25MW/m 2 for a Sn/W component can be envisioned based on calculations and modeling. Reaching a higher operating temperature due to material re-deposition will be discussed. Liquids are typically facing stability issues due to j × B forces, potential pressure and MHD driven instabilities. The Capillary Porous System is used for stabilization by a mesh (W,Mo) substrate and replenishment by means of capillary action.

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“…The physical sputtering yield of tin bombarded by deuterium is found in paper [10]. The authors suggest a strong dependence on surface temperature especially above the melting point.…”

Section: Influence Of Impuritymentioning

confidence: 98%

Application of EMC3-EIRENE to Estimation of Influence of a Liquid Metal Limiter on an LHD-Type Fusion Plasma

Kawamura

Miyazawa

Goto

et al. 2018

Plasma and Fusion Research

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Recently, a new limiter concept with liquid metal for a helical fusion reactor was proposed. This work present a modeling study to understand the influence of the limiter to the plasma and to find critical parameters for the liquid limiter concept. EMC3-EIRENE code is applied to a limiter configuration of a vertical column formed with plane surfaces at the inboard side of the Large Helical Device (LHD). The calculation results indicate that heat load on the helical divertor plates is significantly reduced when the limiter is inserted into the ergodic layer even without impurities. However, the influence of impurity radiation is too large in some cases. In order to achieve a large reduction of divertor flux and to avoid a large reduction of core electron temperature, parameter scans with limiter position and sputtering yield were performed. The results suggest that the limiter position is a critical parameter for acceptable degradation of the core and sufficient reduction of divertor flux.

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Temperature dependence of liquid Sn sputtering by low-energy He+ and D+ bombardment

Cited by 22 publications

References 23 publications

Incident-mass dependence of temperature-enhanced ion-induced sputtering in liquid metals

Incident-mass dependence of temperature-enhanced ion-induced sputtering in liquid metals

Liquid metals as alternative solution for the power exhaust of future fusion devices: status and perspective

Application of EMC3-EIRENE to Estimation of Influence of a Liquid Metal Limiter on an LHD-Type Fusion Plasma

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