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Radial transport of the nonthermal electrons in runaway discharges in the SINP tokamak from analysis of hard x-ray fluctuations

A.K. Hui, S.K. Saha, S. Chowdhury, Santwana Raychaudhuri, D. Banik2009年被引用 1Nuclear FusionIF 3出版社

X-ray bursts from nonthermal electrons (∼10 keV to 1 MeV) emanating from the core plasma and the limiter are measured simultaneously in runaway dominated discharges in the SINP tokamak using a tangentially viewing NaI(Tl) detector and a detector that views the limiter areas. The radial transport coefficient of the nonthermal electrons has been derived from the cross-correlation function of the two x-ray intensities. Two phases of the plasma discharges with distinct transport of the nonthermal electrons are found in these experiments. The stochastic magnetic field fluctuations obtained from the transport coefficients are found to have a relationship with the autocorrelation functions of the x-ray emissivity signals.

日本語訳

SINPトカマクにおけるランナウェイ支配放電において、コアプラズマおよびリミターから放射される非熱電子(約10keVから1MeV)によるX線バーストを、接線方向を向いたNaI(Tl)検出器とリミター方向を向いた検出器を用いて同時に測定した。2つのX線強度の相互相関関数から、非熱電子の径方向輸送係数が導出された。これらの実験では、異なる輸送特性を示す2つのプラズマ放電フェーズが観測された。X線放射強度の自己相関関数から得られた確率的磁場揺動は、輸送係数と関連付けられ、それらの間の相関関係が明らかにされた。

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Hard X-rayNonthermal electronsRadial transport
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