New Benchmarks from Tokamak Experiments for Theoretical Calculations of the Dielectronic Satellite Spectra of Helium-like Ions

Technical Report · Fri Aug 29 00:00:00 EDT 2003

DOI:https://doi.org/10.2172/814752· OSTI ID:814752

Bitter, M; Gu, M F; Vainshtein, L A; Beiersdorfer, P; Bertschinger, G; Marchuk, O; Bell, R; LeBlanc, B; Hill, K W; Johnson, D; Roquemore, L

Dielectronic satellite spectra of helium-like argon, recorded with a high-resolution X-ray crystal spectrometer at the National Spherical Torus Experiment, were found to be inconsistent with existing predictions resulting in unacceptable values for the power balance and suggesting the unlikely existence of non-Maxwellian electron energy distributions. These problems were resolved with calculations from a new atomic code. It is now possible to perform reliable electron temperature measurements and to eliminate the uncertainties associated with determinations of non-Maxwellian distributions.

• Research Organization: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
• Sponsoring Organization: USDOE Office of Science (SC) (US)
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 814752
• Report Number(s): PPPL-3860; TRN: US0304292
• Resource Relation: Other Information: PBD: 29 Aug 2003
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
DIELECTRIC PROPERTIES
ARGON
BENCHMARKS
ELECTRON TEMPERATURE
ENERGY SPECTRA
X-RAY SPECTRA
NSTX DEVICE