Alpha-particle physics in tokamaks

S. Putvinski, W. Heidbrink, G. Martin, F. Porcelli, F. Romanelli, G. Sadler, K. Tobita, J. W. Van Dam, S. Zweben

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


Efficient plasma heating by energetic fusion α-particles is a key element of achieving ignition or high fusion gain regimes (Q ≫ 1) in a tokamak reactor. The paper summarizes issues and reviews the latest theoretical and experimental results in the area of energetic particle physics in tokamaks. The discussion includes the classical physics of α-particle heating, effects of perturbations on a single-particle confinement, collective instabilities driven by energetic α-particles, description of the potential α-particle loss channels and their impact on a design of the plasma-facing components in a tokamak reactor. Most of the extrapolations to tokamak reactors are done with the use of ITER parameters and operational scenarios as an example.

Original languageEnglish
Pages (from-to)493-513
Number of pages21
JournalPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
Issue number1752
Publication statusPublished - 1999 Jan 1
Externally publishedYes


  • Confinement
  • Energetic α-particles
  • Fusion
  • Heating
  • Instabilities
  • Tokamak

ASJC Scopus subject areas

  • Mathematics(all)
  • Engineering(all)
  • Physics and Astronomy(all)


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