The effect of a poloidal field null on alpha-particle orbits in axisymmetric tokamaks

P. Batistoni, S.E. Segre

Research output: Contribution to journalArticle


The effect of a poloidal magnetic field null (X-point region) on the orbits of energetic fusion products is analysed. It is found that the resulting poloidal distribution of lost particles is strongly peaked in the vicinity of the X- point, for an axisymmetric magnetic field distribution. This effect should be considered, together with the effect of field ripple, in the analysis of energetic particle diagnostics and of loading of wall structures. © 1992 IOP Published Ltd.
Original languageEnglish
Pages (from-to)173 - 176
Number of pages4
JournalPhysica Scripta
Issue number2
Publication statusPublished - 1 Dec 1992
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mathematical Physics
  • Atomic and Molecular Physics, and Optics

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