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Observations of the pulse perturbation during multi-pulse molecular beam injection on HL-2A

Shi Zhongbing, Ding Xuantong, Yao Lianghua, Liu Zetian, Chen Chengyuan, Yang Qingwei, Feng Beibin, Zhou Yan, Yan Longwen, Liu Yi2005年Plasma Physics and Controlled FusionIF 2.2出版社

Asymmetric cold pulse perturbation has been observed by means of electron–cyclotron emission (ECE) and soft-x-ray array during pulse-modulated molecular beam injection (MBI) experiments on HL-2A. The perturbation depth is about 30 cm from the low field side and only about 10 cm from the high field side. The cold pulses cannot propagate to the plasma centre from either the low or high field side. The electron temperature in the plasma centre does not change during MBI, but electron density pulse perturbations can be observed in the plasma centre from the ECE 3rd harmonic measurements, which corresponds to the results of the far-infra-red laser interferometer. The experimental results indirectly provide evidence of the shielding mechanisms of the MBI physics.

日本語訳

非対称冷パルス摂動が、HL-2Aにおけるパルス分子ビーム入射(MBI)実験中に、電子サイクロトロン放射(ECE)および軟X線アレイによって観測された。摂動深さは、低磁場側で約30 cm、高磁場側でわずか約10 cmである。冷パルスは、低磁場側および高磁場側のいずれからもプラズマ中心部へ伝播できない。プラズマ中心部の電子温度はMBI中に変化しないが、ECE第3高調波測定から電子密度摂動はプラズマ中心部で観測可能であり、これは遠赤外レーザー干渉計の結果と一致する。実験結果は、MBI物理における遮蔽機構の間接的な証拠を提供する。

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Neutral beam injectionHL-2AMolecular beamSupersonic molecular beam injection
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