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

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 po...

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Bibliographic Details
Published inReview of scientific instruments Vol. 86; no. 4; p. 043505
Main Authors Sharov, I A, Sergeev, V Yu, Miroshnikov, I V, Tamura, N, Kuteev, B V, Sudo, S
Format Journal Article
LanguageEnglish
Published United States 01.04.2015
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Summary: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(16) cm(-3) depending on the background plasma parameters and distance from the solid pellet were measured.
ISSN:1089-7623
DOI:10.1063/1.4919001