Current Sheet Formation in Weakly Ionized Plasmas

Using the two fluid model, the problem of two-dimensional steady-state magnetic reconnection in incompressible resistive weakly ionized plasmas is analysed. Under the strong-coupling condition such as in the Sun's photosphere, it allows us to express the current sheet analytically. In this case...

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Bibliographic Details
Published in:Chinese physics letters 2001-06, Vol.18 (6), p.788-789, Article 788
Main Authors: Ji, Hai-Sheng, Li, Xiao-Qing, Song, Mu-Tao
Format: Article
Language:English
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Summary:Using the two fluid model, the problem of two-dimensional steady-state magnetic reconnection in incompressible resistive weakly ionized plasmas is analysed. Under the strong-coupling condition such as in the Sun's photosphere, it allows us to express the current sheet analytically. In this case the current sheet scales as phi 1/2. Then this model is used to understand magnetic flux cancellation which is observed in the Sun's magnetograms. To account for a cancelling flux of 1X1018 Max in a time interval of 77 min, the width of the current sheet is about ten kilometres.
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/18/6/325