English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
 
 
DownloadE-Mail
  High ß plasmoid formation, drift and striations during pellet ablation in ASDEX Upgrade

Müller, H. W., Dux, R., Kaufmann, M., Lang, P. T., Lorenz, A., Maraschek, M., et al. (2002). High ß plasmoid formation, drift and striations during pellet ablation in ASDEX Upgrade. Nuclear Fusion, 42(3), 301-309.

Item is

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Müller, H. W.1, Author           
Dux, R.2, Author           
Kaufmann, M.1, 3, Author           
Lang, P. T.1, Author           
Lorenz, A.1, Author           
Maraschek, M.4, Author           
Mertens, V.1, Author           
Neuhauser, J.5, Author           
Affiliations:
1Experimental Plasma Physics 1 (E1), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856295              
2Experimental Plasma Physics 4 (E4), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856293              
3Experimental Plasma Physics 3 (E3), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856291              
4Experimental Plasma Physics 2 (E2), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856292              
5External Organizations, ou_persistent22              

Content

show
hide
Free keywords: -
 Abstract: The ablated material of a frozen hydrogen isotope pellet which is injected into a hot tokamak plasma forms a high beta plasmoid. This diamagnetic plasmoid is accelerated to the magnetic low field side of the torus. The high beta plasmoid drift was directly observed by an optical diagnostic with high space and time resolution. Spectroscopic measurements of the emitted light allowed the density and temperature of the ablation cloud, and for the first time also of the drifting plasmoids, to be determined. The experiments give a new insight into the dynamics of the formation of striations during the pellet ablation; these striations cause the separation of the ablated material into a sequence of separated, drifting plasmoids. The influence of the drift on the mass deposition profile for high field side pellet injection is discussed. The plasmoid dynamics even influences the radial pellet motion, most probably owing to a rocket effect. The physical principles of the high beta plasmoid drift are discussed and compared with the experimental observations.

Details

show
hide
Language(s): eng - English
 Dates: 2002-03
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 21052
ISI: 000175551400012
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Nuclear Fusion
  Alternative Title : Nucl. Fusion
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: -
Pages: - Volume / Issue: 42 (3) Sequence Number: - Start / End Page: 301 - 309 Identifier: ISSN: 0029-5515