Field Evaporation

Czack, Gerhard; Kirschstein, Gerhard; Kurtz, Wolfgang; Stein, Frank

doi:10.1007/978-3-662-10154-4_6

Cited by 2 publications

(2 citation statements)

References 109 publications

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“…Temperature effects on the mechanical behaviour of bulk materials have been extensively studied for structural design purposes. In MIGRAINe, the temperature dependence for tokamak-relevant materials is described by analytical fits to experimental and simulation data reported in [23][24][25][26][27][28]66]. The yield strength and Young modulus, which have the strongest influence on e ⊥ , are plotted in figure 9.…”

Section: Temperature and Size Effectsmentioning

confidence: 99%

Dust–wall and dust–plasma interaction in the MIGRAINe code

Vignitchouk

Tolias

Ratynskaia

2014

Plasma Phys. Control. Fusion

106

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The physical models implemented in the recently developed dust dynamics code MIGRAINe are described. A major update of the treatment of secondary electron emission, stemming from models adapted to typical scrape-off layer temperatures, is reported. Sputtering and plasma species backscattering are introduced from fits of available experimental data and their relative importance to dust charging and heating is assessed in fusion-relevant scenarios. Moreover, the description of collisions between dust particles and plasma-facing components, based on the approximation of elastic-perfectly plastic adhesive spheres, has been upgraded to take into account the effects of particle size and temperature.

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Section: Temperature and Size Effectsmentioning

confidence: 99%

Dust–wall and dust–plasma interaction in the MIGRAINe code

Vignitchouk

Tolias

Ratynskaia

2014

Plasma Phys. Control. Fusion

106

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“…Kollath's tabulation of (δ m E m ) is not only reproduced in plasma-surface interaction compendia but also in edge fusion plasma textbooks [71] and physics handbooks [72,73]. These values have been adopted from numerous experiments dating back to the 1920s [74].…”

Section: Experimental Data In Plasma-materials Interaction Compendiamentioning

confidence: 99%

On secondary electron emission and its semi-empirical description

Tolias

2014

Plasma Phys. Control. Fusion

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The description of secondary electron emission, as presented by plasma-material interaction fusion compendia, is demonstrated to be outdated both in its theoretical and experimental aspects. As a consequence, the recommended treatment leads to a strong overestimation of the secondary electron emission yields for tokamak relevant materials. Reliable experimental data-sets, in fusion energy ranges, are identified after a detailed review of a recently updated electron-solid interaction database and previously published experimental results. A novel semi-empirical approach is proposed for the description of the secondary electron emission yield. Application of the approach for a large number of solids reveals an unprecedented agreement with experimental data. The present results can serve as a reliable input for future quantitative investigations of the effect of secondary electron emission on various aspects of scrape-off-layer physics.

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Field Evaporation

Cited by 2 publications

References 109 publications

Dust–wall and dust–plasma interaction in the MIGRAINe code

Dust–wall and dust–plasma interaction in the MIGRAINe code

On secondary electron emission and its semi-empirical description

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