Optical diagnostics of a low frequency instability rotating around a magnetized plasma column |
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Authors: | A Escarguel |
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Institution: | 1.Laboratoire PIIM, UMR 6633 CNRS,Université de Provence, Centre de Saint Jér?me,Marseille Cedex 20,France |
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Abstract: | An argon magnetized plasma column is created with primary energetic electrons in the Mistral device. Low frequency instabilities
regularly rotating around this column are observed with an ultra-fast camera and a spectroscopic device. Experimental results
coupled to a coronal code show the presence of a few percents of fast (hot) electrons inside the ejected plasma. It also shows
that ultra-fast camera analysis of the ejected plasma can only give information on the primary electron population. Finally,
these results suggest that the radial decrease of the light emitted by the ejected plasma is essentially due to the radial
decrease of the mean energy of the hot electrons. |
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Keywords: | |
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