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Observations concerning the injection of a lithium aerosol into the edge of TFTR discharges

D.K. Mansfield, D.W. Johnson, B. Grek, H.W. Kugel, M.G. Bell, R.E. Bell, R.V. Budny, C.E. Bush, E.D. Fredrickson, K.W. Hill2001年被引用 97Nuclear FusionIF 3出版社

A new method of actively modifying the plasma-wall interaction was tested on the Tokamak Fusion Test Reactor. A laser was used to introduce a directed lithium aerosol into the discharge scrape-off layer. The lithium introduced in this fashion ablated and migrated preferentially to the limiter contact points. This allowed the plasma-wall interaction to be influenced in situ and in real time by external means. Significant improvement in energy confinement and fusion neutron production rate as well as a reduction in the plasma Zeff have been documented in a neutral beam heated plasma. The introduction of a metallic aerosol into the plasma edge increased the internal inductance of the plasma column and also resulted in prompt heating of core electrons in ohmic plasmas. Preliminary evidence also suggests that the introduction of an aerosol leads to both edge poloidal velocity shear and edge electric field shear.

日本語訳

トカマク核融合試験炉において、プラズマ-壁相互作用を能動的に改変する新しい方法が試験された。レーザーを用いて、指向性リチウムエアロゾルを放電スクレープオフ層に導入した。この方法で導入されたリチウムは、優先的にリミター接触点へと移動・堆積した。これにより、プラズマ-壁相互作用をその場かつリアルタイムで外部手段により影響を与えることが可能となった。中性粒子ビーム加熱プラズマにおいて、エネルギー閉じ込めと核融合中性子生成率の大幅な改善、ならびにプラズマ実効電荷(Zeff)の低減が記録された。オーミックプラズマにおいて、金属エアロゾルのプラズマ端部への導入は、プラズマ柱の内部インダクタンスを増加させ、またコア電子の即時加熱をもたらした。予備的証拠は、エアロゾルの導入が端部ポロイダル速度シアと端部電場シアの両方を誘起することを示唆している。

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tftr高精度(タイトル一致)

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LithiumTFTR
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