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Study of internal transport barriers by comparison of reversed shear and high- discharges in JT-60U

Y Koide, M Mori, T Fujita, H Shirai, T Hatae, T Takizuka, H Kimura, T Oikawa, N Isei, A Isayama1998年Plasma Physics and Controlled FusionIF 2.2出版社

Reduction of electron thermal diffusivity was investigated by comparing the internal transport barrier (ITB) with that of high- discharges. In reversed shear discharges heated by neutral beams, reduction was significant when negative magnetic shear was strong. Radial location of ITB propagated outwards and then localized near the region of q-minimum for both the ion and the electron channels. Reduction in was also observed in the electron heating regime by ion cyclotron heating

日本語訳

電子熱拡散率の低減は、内部輸送障壁(ITB)を高β放電のそれと比較することにより調査された。中性粒子ビーム加熱による反転シア放電において、負の磁気シアが強い場合に拡散率の低減が顕著であった。ITBの径方向位置は外側へ伝播し、その後、イオンおよび電子の両チャネルにおいてq最小値付近に局在した。イオンサイクロトロン加熱による電子加熱領域においても、拡散率の低減が観測された。

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JT-60UTransport barrierInternal transport barrierReversed magnetic shear
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