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Simultaneous measurement of q and Er profiles using the motional Stark effect in high-performance DIII-D plasmas (invited)
The motional Stark effect (MSE) diagnostic was developed to provide a measurement of the magnetic pitch angle or q profile in tokamaks. The technique relies upon polarization measurements of Stark bro...

The motional Stark effect: Overview and future development (invited)

Rev. Sci. Instrum. 70, 810 (1999); doi:10.1063/1.1149316

Issue Date: January 1999

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F. M. Levinton
Fusion Physics and Technology, Torrance, California 90503
As an atomic beam propagates across a magnetic field, an electric field is generated, E = V × B. This results in a spectral splitting and polarization of the emitted radiation, known as the Stark effect. The direction of polarization of the emitted radiation provides a measure of the local magnetic field direction or pitch angle. In addition to the electric field generated by the neutral beam, intrinsic electric fields present in the plasma affect the direction of polarization. This has been exploited to measure both the plasma electric field and the magnetic field. Future development of the motional Stark effect utilizing laser induced fluorescence to access much lower magnetic fields will be discussed. ©1999 American Institute of Physics.
History: Presented 10 June 1998
Permalink: http://link.aip.org/link/?RSINAK/70/810/1
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KEYWORDS and PACS

Keywords
PACS
  • 52.70.Ds
    Physics of plasmas and electric discharges Plasma diagnostic techniques and instrumentation Electric and magnetic measurements
  • 32.60.+i
    Atomic properties and interactions with photons Zeeman and Stark effects
  • 52.25.-b
    Physics of plasmas and electric discharges Plasma properties
  • YEAR: 1999

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ISSN:
0034-6748 (print)   1089-7623 (online)
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REFERENCES (30)
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