On the fluctuation of line radiation emitted during aluminum micro-pellet ablation in magnetized plasmas

G. Kocsis, J. Bakos, R. Burhenn, B. Kardon, S. Kálvin, L. Ledl, G. Mank, G. Petravich, A. Pospieszczyk, S. Zoletnik

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The phenomenon of striation observed during pellet ablation in hot magnetized plasma is investigated experimentally injecting aluminum micro-pellets into MT-1M and TEXTOR-94 tokamak and W7-AS stellarator plasmas. Changes in pellet cloud shape and temporal fluctuations of total emitted line radiations are studied. Special attention is paid to the investigation of the dependence of fluctuation frequency on pellet velocity. The results show that the fluctuation frequency is characterized by a characteristic time rather than by a characteristic length, and that the striation is caused by a phenomenon that occurs during the evolution of the ionized-pellet cloud. The compatibility of these experimental observations with different theories of striation is discussed.

Original languageEnglish
Pages (from-to)881-898
Number of pages18
JournalPlasma Physics and Controlled Fusion
Volume41
Issue number7
DOIs
Publication statusPublished - Jul 1999

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Ablation
pellets
ablation
striation
aluminum
Aluminum
Plasmas
Radiation
radiation
stellarators
high temperature plasmas
compatibility

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Condensed Matter Physics
  • Nuclear and High Energy Physics

Cite this

On the fluctuation of line radiation emitted during aluminum micro-pellet ablation in magnetized plasmas. / Kocsis, G.; Bakos, J.; Burhenn, R.; Kardon, B.; Kálvin, S.; Ledl, L.; Mank, G.; Petravich, G.; Pospieszczyk, A.; Zoletnik, S.

In: Plasma Physics and Controlled Fusion, Vol. 41, No. 7, 07.1999, p. 881-898.

Research output: Contribution to journalArticle

Kocsis, G. ; Bakos, J. ; Burhenn, R. ; Kardon, B. ; Kálvin, S. ; Ledl, L. ; Mank, G. ; Petravich, G. ; Pospieszczyk, A. ; Zoletnik, S. / On the fluctuation of line radiation emitted during aluminum micro-pellet ablation in magnetized plasmas. In: Plasma Physics and Controlled Fusion. 1999 ; Vol. 41, No. 7. pp. 881-898.
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