Dust creation and transport in MAST
Dust creation and transport in MAST
复制标题
MAST 中粉尘的产生和输送
DOI:
10.1088/0029-5515/50/10/105012
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发表时间:
2010
期刊:
影响因子:
3.3
通讯作者:
De Temmerman G
中科院分区:
文献类型:
--
作者:
De Temmerman G
In this contribution, we report on experiments performed in MAST to investigate dust creation, transport and influence on plasma performance. The exceptional diagnostic access of MAST allows stereoscopic imaging of dust particles' motion in both the divertor and the main chamber, utilizing fast infrared cameras. This technique allows the 3D trajectory of the particles to be reconstructed. Infrared imaging of dust creation during disruptions revealed an isotropic release of dust particles from the surface with very high velocities (up to 350 m s− 1). Stereoscopic imaging has been used to study, for the first time, the mobilization and transport in the divertor plasmas of carbon and tungsten particles with known size distributions, which were introduced into the vessel through a divertor probe. A correlation between the carbon particle size and acceleration by the plasma is observed. Tungsten particles are found to move with lower velocities and experience lower acceleration and are found to be more prone to vertical motion towards the core plasma. In the case of large particles this can lead to early disruptions. Modelling of the dust injection experiments has been conducted using the DTOKS code in an attempt to validate the transport equations employed in the simulation.
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DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
C. Grisolia;S. Rosanvallon;A. Loarte;P. Sharpe;C. Arnas
通讯作者:
C. Arnas
DOI:
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发表时间:
2005
期刊:
影响因子:
--
作者:
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通讯作者:
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DOI:
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发表时间:
2010
期刊:
影响因子:
--
作者:
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通讯作者:
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DOI:
--
发表时间:
2008
期刊:
Contrib.Plasma Phys. 48
影响因子:
--
作者:
K.Kasamoto;H.Kawabata;T.Usui;N.Hayashi;T.Takizuka;K.Shimizu;Y.Tomita
通讯作者:
Y.Tomita
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
C. Arnas;C. Pardanaud;C. Martin;P. Roubin;G. D. Temmerman;G. Counsell
通讯作者:
G. Counsell