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Ralf Schneider

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Max-Planck-Institut für Plasmaphysik, EURATOM Association<br />

Diffusion in graphite<br />

Real structure of the material<br />

needs to be included<br />

Internal Structure of Graphite<br />

Granule sizes ~ microns<br />

Void sizes ~ 0.1 microns<br />

Crystallite sizes ~ 50-100 Ångstroms<br />

Micro-void sizes ~ 5-10 Ångstroms<br />

Multi-scale problem in space (1cm to<br />

Ångstroms) and time (pico-seconds to<br />

seconds)

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