Experimental study of plasma formation on an aluminum surface pulsed with megagauss magnetic field

Author

Awe, T.J. ; Bauer, B.S. ; Siemon, R.E. ; Fuelling, S. ; Lindemuth, I.R. ; Makhin, V.

Author_Institution

Univ. of Nevada Reno, Reno, NV, USA

fYear

2009

fDate

1-5 June 2009

Firstpage

1

Lastpage

1

Abstract

Plasma formation on the surface of thick aluminium metal, in response to a pulsed multi-megagauss magnetic field, is experimentally investigated. The dynamics of the pulsed aluminum rod and resultant surface plasma are examined with time-resolved imaging, pyrometry, spectroscopy, and laser shadowgraphy; and time gated EUV spectroscopy is used characterised the emission lines from multiply ionised aluminium atoms. The measurement of the time-evolution of the surface temperature, aluminum expansion rate, and ionization state, as a function of applied field, significantly constrains the choice of models used in radiation-magnetohydrodynamic simulations.

Keywords

ionisation; plasma diagnostics; plasma magnetohydrodynamics; plasma production; plasma simulation; pyrometers; aluminum expansion; emission lines; ionised aluminium atoms; laser shadowgraphy; plasma formation; pulsed aluminum rod; pulsed multimegagauss magnetic field; pyrometry; radiation-magnetohydrodynamic simulations; thick aluminium metal surface; time gated EUV spectroscopy; time-resolved imaging; Aluminum; Atom lasers; Laser modes; Magnetic field measurement; Magnetic fields; Optical pulses; Plasma measurements; Plasma temperature; Spectroscopy; Surface emitting lasers;

fLanguage

English

Publisher

ieee

Conference_Titel

Plasma Science - Abstracts, 2009. ICOPS 2009. IEEE International Conference on

Conference_Location

San Diego, CA

ISSN

0730-9244

Print_ISBN

978-1-4244-2617-1

Type

conf

DOI

10.1109/PLASMA.2009.5227654

Filename

5227654