Skip to main content
SpringerLink
Log in

Particle diffusion in TBR

Диффузия частиц в TBR

  • Published:
Il Nuovo Cimento B (1971-1996)

Summary

The cross-field diffusion coefficient in the plasma edge of TBR, a small research tokamak with large magnetic-field ripples, has been evaluated from the time evolution of the density profile in the shadow of the limiter. The diffusion appears to be closer to that predicted by the effect of ripples rather than to either collisional (Pfirsh-Schluter) or turbulent (Bohm).

Riassunto

Il coefficiente di diffusione del campo incrociato nel bordo del plasma del TBR, un piccolo tokamak di ricerca con grandi striscie di campo magnetico, è stato calcolato dall'evoluzione nel tempo del profilo di densità nell'ombra del limitatore. La diffusione appare essere piú vicina a quella prevista dall'effetto delle striscie, piuttosto che all'effetto collisionale (Pfirsh-Schluter) o turbolento (Bohm).

Резюме

Оценивается коэффициент диффузии в плазме TBR, небольшого исследовательского токамака с большими пульсациями магнитного поля, из временной эволюции профиля плотности в тени ограничителя. Оказывается, что диффузия в основном опреляется пульсацями магнитного поля, а не столкновениями или турбулентностью.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

ReferencesReferences

  1. L. S. Scaturro andB. Kusse:Nuclear Fusion,18, 1717 (1978).

    Article  ADS  Google Scholar 

  2. K. Uehara, Y. Gomag, T. Yamamoto, N. Suzuki, M. Maeno, T. Hirayama, M. Shimada, S. Kanoshima andN. Fujisawa:Plasma Physics,21, 89 (1979).

    Article  ADS  Google Scholar 

  3. A. I. Hershcovitch, J. F. Pipkins, W. C. Jennings andR. L. Hickok:Phys. Lett., A,77, 249 (1980).

    Article  ADS  Google Scholar 

  4. S. D. Scott: Ph D. Thesis, Department of Nuclear Engineering, Massachusetts Institute of Technology, Cambridge, USA (1982).

  5. K. Myamoto:Plasma Physics for Nuclear Fusion (MIT Press, Cambridge, Mass., 1980), Chapt. 8.

    Google Scholar 

  6. T. E. Stringer:Nuclear Fusion,12, 689 (1972).

    Article  Google Scholar 

  7. R. E. Slusher andC. M. Surko:Phys. Rev. Lett.,40, 400 (1978).

    Article  ADS  Google Scholar 

  8. B. Richards, D. S. Stone, A. S. Fisher andG. Bekefi: Plasma Research Report PRR-77/21, Massachusetts Institute of Technology, Cambridge (1977).

    Google Scholar 

  9. S. W. Simpson, I. C. Nascimento, R. M. O. Galvão, R. P. da Silva, R. M. Prates-Drozak, A. N. Fagundes andJ. H. Vuolo: Report LFP-2 IFUSP/P-155, Instituto de Física, Universidade de São Paulo, São Paulo (1978).

    Google Scholar 

  10. R. C. Cross, B. W. James, H. C. Kirbie, J. A. Lehane andS. W. Simpson:Atomic Energy, p. 2, July/October (1981).

  11. F. Engelmann andA. Sestero:Nuclear Fusion,15, 714 (1975).

    Article  Google Scholar 

  12. J. W. Connor andR. J. Hastie:Nuclear Fusion,13, 221 (1973).

    Article  Google Scholar 

  13. I. C. Nascimento, A. N. Fagundes, R. P. da Silva, R. M. O. Galvão, E. del Bosco, J. H. Vuolo, E. K. Sanada andR. Dallaqua:Proceedings of the Spring College on Fusion Energy, 1981 (International Centre for Theoretical Physics, Trieste, 1982), p. 45.

    Google Scholar 

  14. F. F. Chen: inPlasma Diagnostic Techniques, edited byR. H. Huddelstone andS. L. Leonard (Academic Press, New York, N. Y. 1965).

    Google Scholar 

  15. F. F. Chen, C. Etievant andD. Mosher:Phys. Fluids,11, 811 (1968).

    Article  ADS  Google Scholar 

  16. R. J. Goldston andH. H. Towner:Nuclear Fusion,20, 781 (1980).

    Article  ADS  Google Scholar 

  17. A. H. Boozer:Phys. Fluids,23, 2283 (1980).

    Article  MathSciNet  ADS  MATH  Google Scholar 

  18. A. V. Gurevich andYa. S. Dimant:Nuclear Fusion,21, 159 (1981).

    Article  ADS  Google Scholar 

  19. K. C. Shaing andJ. D. Callen:Nuclear Fusion,22, 1061 (1982).

    Article  Google Scholar 

Download references

Author information

Author notes

  1. R. S. Dallaqua

    Present address: Instituto de Pesquisas Espaciais, Conselho Nacional de Desenvolvimento Científico e Tecnológico, 12200, São José dos Campos, S.P., Brazil

  2. A. Hershcovitch

    Present address: Brookhaven National Laboratory, 11973, Upton, N. Y., USA

  3. R. M. O. Galvão

    Present address: Instituto de Estudos Avançados, Centro Técnico Aeroespacial, 12200, São José dos Campos, S.P., Brazil

Authors and Affiliations

  1. Instituto de Física, Universidade de São Paulo, Laboratório de Física de Plasmas, São Paulo, Brazil

    R. S. Dallaqua, A. Hershcovitch, R. P. da Silva, I. C. Nascimento & R. M. O. Galvão

Authors
  1. R. S. Dallaqua
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. A. Hershcovitch
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. R. P. da Silva
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. I. C. Nascimento
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. R. M. O. Galvão
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

Traduzione a cura della Redazione.

Переведено редакцией.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Dallaqua, R.S., Hershcovitch, A., da Silva, R.P. et al. Particle diffusion in TBR. Nuov Cim B 83, 1–11 (1984). https://doi.org/10.1007/BF02723758

Download citation

  • Received:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF02723758

PACS. 52.25

Search

Navigation