High density conics in a magnetically expanding helicon plasma
A two-dimensional mapping of ion density and plasma potential in a diverging magnetized low
pressure (0.4 mTorr) carbon dioxide helicon plasma containing a double layer reveals the presence
of high density conics (7 109 cm−3) along the most diverging magnetic field lines exiting the
helicon source and connecting with the grounded expansion chamber. The density in the conic is
about 30% greater than the density at the double layer and this results from local ionization
associated with the...[Show more]
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