Alpha transport and blistering in tokamaks

W. Bauer, K. L. Wilson, C. L. Bisson, L. G. Haggmark, Robert James Goldston

Research output: Contribution to journalArticlepeer-review

25 Scopus citations


The particle flux and angular distribution of 3.5 MeV alpha particles impinging on the first wall from uncontained banana orbits in an axisymmetric tokamak reactor have been calculated. The resulting helium concentration profiles in the first wall can give rise to surface exfoliation under specified conditions. The major mitigating factor is the simultaneous surface recession due to sputtering by the D-T charge-exchange neutral flux. For the parameters used in these calculations blistering in high-sputtering-rate materials such as beryllium is unlikely, whereas in low-sputtering-rate materials such as niobium helium-induced surface deformation is quite probable.

Original languageEnglish (US)
Pages (from-to)93-103
Number of pages11
JournalNuclear Fusion
Issue number1
StatePublished - Jan 1979

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Condensed Matter Physics


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