Imaging polychromator for density measurements of polystyrene pellet cloud on the Large Helical Device

Journal Article · Wed Apr 15 00:00:00 EDT 2015 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4919001· OSTI ID:22392457

Sergeev, V. Yu.; Miroshnikov, I. V. ^[1]; Tamura, N.; Sudo, S. ^[2]; Kuteev, B. V. ^[3]

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1. Saint-Petersburg State Polytechnical University, Saint-Petersburg (Russian Federation)
2. National Institute for Fusion Science, Toki (Japan)
3. Russian Scientific Centre Kurchatov Institute, Moscow (Russian Federation)

Experimental data on spatial distributions of a pellet cloud electron density are necessary for the development of many applications of pellet injection, namely, plasma fuelling, discharge control, and plasma diagnostics. An improved approach of electron density measurements inside the cloud of a polystyrene pellet ablating in hot plasma of the large helical device is described. Density values of (1-30) × 10{sup 16} cm{sup −3} depending on the background plasma parameters and distance from the solid pellet were measured.

• OSTI ID: 22392457
• Journal Information: Review of Scientific Instruments, Vol. 86, Issue 4; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
EVALUATION
HOT PLASMA
LHD DEVICE
PLASMA DIAGNOSTICS
SPATIAL DISTRIBUTION