Electron density evolution during a fast, non-diffusive propagation of a magnetic field in a multi-ion-species plasma

Abstract

Mehlhorn, T. A. (2016). Electron density evolution during a fast, non-diffusive propagation of a magnetic field in a multi-ion-species plasma. Physics of Plasmas, 23(12), [122126]. DOI: 10.1063/1.4972536 DOI:10.1063/1.4972536 Document status and date:Published: 01/12/2016 Document Version: Publisher's PDF, also known as Version of Record (includes final page, issue and volume numbers) Please check the document version of this publication:• A submitted manuscript is the version of the article upon submission and before peer-review. There can be important differences between the submitted version and the official published version of record. People interested in the research are advised to contact the author for the final version of the publication, or visit the DOI to the publisher's website.• The final author version and the galley proof are versions of the publication after peer review.• The final published version features the final layout of the paper including the volume, issue and page numbers. Link to publication General rightsCopyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research.• You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal.If the publication is distributed under the terms of Article 25fa of the Dutch Copyright Act, indicated by the "Taverne" license above, please follow below link for the End User Agreement: www.tue.nl/taverne Take down policy If you believe that this document breaches copyright please contact us at:openaccess@tue.nl providing details and we will investigate your claim. Electron density evolution during a fast, non-diffusive propagation of a magnetic field in a multi-ion-species plasma Electron density evolution during a fast, non-diffusive propagation of a magnetic field in a multi-ion-species plasma We present spectroscopic measurements of the electron density evolution during the propagation of a magnetic-field front (peak magnitude $8 kG) through low-resistivity, multi-ion species plasma. In the configuration studied, a pulsed current, generating the magnetic field, is driven through a plasma that pre-fills the volume between two electrodes. 3D spatial resolution is achieved by local injection of dopants via an optimized laser blow-off technique. The electron density evolution is inferred from the intensity evolution of Mg II and B II-III dopant line-emission. The Doppler-shifted line-emission of the light boron, accelerated by the magnetic field is also used to determine the electric-potential-hill associated with the propagating magnetic field. Utilizing the same spectral line for the determinat...

Regulation of the density distribution of a strongly dissipative plasma by a pulsed magnetic field

“…Controlling the plasma with a magnetic field is of great importance to both theoretical and applied research. The dynamics of the plasma evolution [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17], the equilibrium shaped by the magnetic field, the plasma transport [18][19][20][21], and instability [3,16,[22][23][24][25] in the magnetic field are at the core of the theoretical interests. As for application-orientated studies, the magnetic field is usually used as a tool to modify the morphology of the plasma, regulate its parameters, and govern its motion [5,7,15,26].…”