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"Beam-emission spectroscopy" diagnostics also measure edge fast-ion light

Publication ,  Journal Article
Heidbrink, WW; McKee, GR; Smith, DR; Bortolon, A
Published in: Plasma Physics and Controlled Fusion
August 1, 2011
Published version (DOI)

Beam-emission spectroscopy (BES) diagnostics normally detect fluctuations in the light emitted by an injected neutral beam. Under some circumstances, however, light from fast ions that charge exchange in the high neutral-density region at the edge of the plasma make appreciable contributions to the BES signals. This 'passive' fast-ion Dα (FIDA) light appears in BES signals from both the DIII-D tokamak and the National Spherical Torus Experiment (NSTX). One type of passive FIDA light is associated with classical orbits that traverse the edge. Another type is caused by instabilities that expel fast ions from the core; this light can complicate measurement of the instability eigenfunction. © 2011 IOP Publishing Ltd.

Duke Scholars

David R. Smith
Author David R. Smith Electrical and Computer Engineering

Published In

Plasma Physics and Controlled Fusion

DOI

10.1088/0741-3335/53/8/085007

EISSN

1361-6587

ISSN

0741-3335

Publication Date

August 1, 2011

Volume

53

Issue

8

Related Subject Headings

  • Fluids & Plasmas
  • 5106 Nuclear and plasma physics
  • 0299 Other Physical Sciences
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
 

Citation

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Heidbrink, W. W., McKee, G. R., Smith, D. R., & Bortolon, A. (2011). "Beam-emission spectroscopy" diagnostics also measure edge fast-ion light. Plasma Physics and Controlled Fusion, 53(8). https://doi.org/10.1088/0741-3335/53/8/085007
Heidbrink, W. W., G. R. McKee, D. R. Smith, and A. Bortolon. “"Beam-emission spectroscopy" diagnostics also measure edge fast-ion light.” Plasma Physics and Controlled Fusion 53, no. 8 (August 1, 2011). https://doi.org/10.1088/0741-3335/53/8/085007.
Heidbrink WW, McKee GR, Smith DR, Bortolon A. "Beam-emission spectroscopy" diagnostics also measure edge fast-ion light. Plasma Physics and Controlled Fusion. 2011 Aug 1;53(8).
Heidbrink, W. W., et al. “"Beam-emission spectroscopy" diagnostics also measure edge fast-ion light.” Plasma Physics and Controlled Fusion, vol. 53, no. 8, Aug. 2011. Scopus, doi:10.1088/0741-3335/53/8/085007.
Heidbrink WW, McKee GR, Smith DR, Bortolon A. "Beam-emission spectroscopy" diagnostics also measure edge fast-ion light. Plasma Physics and Controlled Fusion. 2011 Aug 1;53(8).
Journal cover image

Published In

Plasma Physics and Controlled Fusion

DOI

10.1088/0741-3335/53/8/085007

EISSN

1361-6587

ISSN

0741-3335

Publication Date

August 1, 2011

Volume

53

Issue

8

Related Subject Headings

  • Fluids & Plasmas
  • 5106 Nuclear and plasma physics
  • 0299 Other Physical Sciences
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics