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Fast imaging of visible phenomena in TFTR

R.J. Maqueda, G.A. Wurden1999年被引用 25Nuclear FusionIF 3出版社

A commercial fast framing visible imaging system was used at TFTR to study edgeplasma phenomena. This system was typically operated at 1000 frames/s, with exposuresas short as 10 μs. These short exposures ar made possible by the image intensificationof the camera, which also allows narrow band interference filters to be used. Sequencesof over 1600 digital images (239 pixel × 192 pixel × 8 bit) can be capturedinto temporary memory banks for later slow play-back and/or storage into computerarchives. Examples are shown illustrating plasma disruption, flying debris, lithium pelletinjection, shallow deposition of lithium by laser outside the plasma (DOLLOP) and edge plasmaturbulence. The characteristics of this system make it also very usefulto the machine operator, since they provide slow motion video coverage of the interior of the device.

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