Comparison of pellet acceleration model results to experimentally observed penetration depths

T. Szepesi, S. Kálvin, G. Kocsis, P. T. Lang, I. Senichenkov

Research output: Article

3 Citations (Scopus)


Cryogenic hydrogen isotope fuelling pellets were observed to undergo strong radial acceleration in the confined plasma. The reason for pellet acceleration is believed to originate from drift effects: the ionised part of pellet cloud is affected by the grad-B drift, therefore, the cloud becomes polarised. The E × B drift then deforms the pellet cloud so that it can no longer follow the original flux bundle - this results in a less efficient shielding on the pellet's HFS region, where the subsequently enhanced ablation pushes the pellet towards LFS, like a rocket. In order to study this effect, a simple and a comprehensive ablation model was developed. Results from both models show quantitatively acceptable agreement with ASDEX-Upgrade experiments concerning trajectory curvature, corresponding to radial acceleration in the range of 104-107 m/s2.

Original languageEnglish
Pages (from-to)507-510
Number of pages4
JournalJournal of Nuclear Materials
Issue number1
Publication statusPublished - jún. 15 2009

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering

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