Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Profile structures of TJ-II stellarator plasmas

Herranz1, Pastor, Castejon

  • 1Laboratorio Nacional de Fusion por Confinamiento Magnetico, Asociacion Euratom/Ciemat para Fusion, Avenida Complutense 22, 28040 Madrid, Spain.

Physical Review Letters
|November 18, 2000
PubMed
Summary

Fine structures in TJ-II stellarator electron profiles were observed using Thomson scattering. These persistent irregularities suggest complex plasma behavior not explained by average parameters.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

The combined pituitary function test in children: an evaluation of the clinical usefulness of TRH and LHRH stimulation tests through a retrospective analysis of one hundred and twenty six cases.

Clinical endocrinology·2017
Same author

Colorimetric Assay of Alditols in Complex Biological Samples.

Journal of agricultural and food chemistry·2001
Same author

Effects of Drying Pretreatments on the Cell Wall Composition of Grape Tissues.

Journal of agricultural and food chemistry·2001
Same author

Bolus Administration of Saruplase in Europe (BASE), a Pilot Study in Patients with Acute Myocardial Infarction.

Journal of thrombosis and thrombolysis·2001
Same author

Magnetic Resonance Angiography in Pulsatile Tinnitus: The Role of Anatomical Variations.

The international tinnitus journal·2001
Same author

5,5-Dimethyl-3-(5-methyl-1H-pyrazol-3-ylamino)cyclohex-3-en-1-one

Acta crystallographica. Section C, Crystal structure communications·2000

Area of Science:

  • Plasma Physics
  • Fusion Energy Research
  • Stellarator Dynamics

Background:

  • Understanding electron temperature and density profiles is crucial for magnetic confinement fusion.
  • Fine structures in plasma diagnostics can indicate underlying instabilities or transport phenomena.
  • The TJ-II stellarator provides a unique environment for studying complex plasma behavior.

Purpose of the Study:

  • To investigate the nature and origin of fine structures observed in TJ-II stellarator electron profiles.
  • To characterize these structures across different magnetic configurations and plasma conditions.
  • To correlate observed structures with plasma heating methods and macroscopic parameters.

Main Methods:

  • Utilizing a high spatial resolution Thomson scattering system for precise profile measurements.

Related Experiment Videos

  • Analyzing ensemble averages of multiple plasma discharges with similar macroscopic parameters.
  • Examining data from various magnetic configurations and electron cyclotron heating scenarios.

    • Main Results:

    • Observed fine structures, characterized by superimposed peaks and valleys, in electron temperature and density profiles.
    • These irregularities persisted even after ensemble averaging of discharges with similar macroscopic parameters.
    • Structures were consistently found across all explored magnetic configurations and electron cyclotron heating.

    Conclusions:

    • The presence of persistent fine structures indicates non-trivial plasma phenomena in the TJ-II stellarator.
    • These structures are independent of macroscopic plasma parameters and magnetic configuration.
    • Further investigation is needed to elucidate the underlying physical mechanisms responsible for these observed irregularities.