Approaching the edges of a surfatron microwave plasma by Thomson scattering

S. Hübner, E.A.D. Carbone, J.M. Palomares Linares, J.J.A.M. Mullen, van der

Research output: Contribution to conferencePoster

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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 languageEnglish
Publication statusPublished - 2012

Bibliographical note

Poster presented at the 21st European Conference on the Atomic and Molecular Physics of Ionized Gases (ESCAMPIG XXI), July 10-14, 2012, Viana do Castelo, Portugal

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