Spatial mode structures of electrostatic drift waves in a collisional cylindrical helicon plasma

C. Schröder, O. Grulke, T. Klinger, V. Naulin

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    In a cylindrical helicon plasma, mode structures of coherent drift waves are studied in the poloidal plane, the plane perpendicular to the ambient magnetic field. The mode structures rotate with a constant angular velocity in the direction of the electron diamagnetic drift and show significant radial bending. The experimental observations are compared with numerical solutions of a linear nonlocal cylindrical model for drift waves [ Ellis , Plasma Phys. 22, 113 (1980) ]. In the numerical model, a transition to bended mode structures is found if the plasma collisionality is increased. This finding proves that the experimentally observed bended mode structures are the result of high electron collisionality. (C) 2004 American Institute of Physics.
    Original languageEnglish
    JournalPhysics of Plasmas
    Volume11
    Issue number9
    Pages (from-to)4249-4253
    ISSN1070-664X
    DOIs
    Publication statusPublished - 2004

    Fingerprint Dive into the research topics of 'Spatial mode structures of electrostatic drift waves in a collisional cylindrical helicon plasma'. Together they form a unique fingerprint.

    Cite this