Abstract
The radial and axial profiles of a cylindrical surfatron plasma created at intermediate pressure in argon
were mapped by Thomson scattering. This technique provides accurate, non-perturbing access. The direct imaging capacity of a triple-grating spectrometer equipped with an iCCD camera allows investigating radial and axial profiles. The obtained radial ne(r) values match a Bessel function, even if the plasma column is strongly contracted. The axial profile is linear, depending on the pressure.
However, the end of the plasma column shows a discontinuity.
Original language | English |
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Publication status | Published - 2012 |