Observation of dust particles by a laser scattering method in the JIPPT-IIU tokamak
作者： K Narihara , K Toi , Y Hamada , K Yamauchi , K Adachi
DOI: 10.1088/0029-5515/37/8/I12
关键词: Laser scattering 、 Falling (sensation) 、 Plasma 、 Thomson scattering 、 Dust particles 、 Materials science 、 Vacuum chamber 、 Tokamak 、 Atomic physics 、 Carbon dust
摘要: Laser scattering signals that indicate the presence of small dust particles (diameter ≤ 2 μm) have been occasionally observed in JIPPT-IIU tokamak chamber. This phenomenon was reproduced deliberately by spreading carbon from top vacuum No noticeable effect on plasma for falls up to at least 106 (10 μg) 20 ms during discharges. Dust falling just before startup seemed be confined but it soon ejected (in less than 30 ms)
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