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TJ-II:Fast camera: Difference between revisions
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=== Two-dimensional imaging of n<sub>e</sub> and T<sub>e</sub> showing ELM-like Edge Bursts<ref name="delaCal4"> </ref>=== | === Two-dimensional imaging of n<sub>e</sub> and T<sub>e</sub> showing ELM-like Edge Bursts<ref name="delaCal4"> </ref>=== | ||
[[File:25623wComm_Photo000001.jpg|700px|link=http://www-fusion.ciemat.es/fileshare/doc_exchange/camaras/HeliumRatio_ELMs.m4v] | [[File:25623wComm_Photo000001.jpg|700px|link=http://www-fusion.ciemat.es/fileshare/doc_exchange/camaras/HeliumRatio_ELMs.m4v)] | ||
An intensified visible camera looks tangentially at a poloidal limiter where helium recycles, acting as a wide neutral source, and the atomic line emission due to plasma excitation becomes strongly localized there. It includes a bifurcated coherent bundle, each end with a different interference filter to select helium atomic lines, so that two simultaneous filtered images are captured in one single frame. The object of the proposed technique is to apply the well-known helium-beam line-ratio technique to obtain from selected filtered images the two-dimensional (2D) edge plasma n<sub>e</sub> and T<sub>e</sub>. | An intensified visible camera looks tangentially at a poloidal limiter where helium recycles, acting as a wide neutral source, and the atomic line emission due to plasma excitation becomes strongly localized there. It includes a bifurcated coherent bundle, each end with a different interference filter to select helium atomic lines, so that two simultaneous filtered images are captured in one single frame. The object of the proposed technique is to apply the well-known helium-beam line-ratio technique to obtain from selected filtered images the two-dimensional (2D) edge plasma n<sub>e</sub> and T<sub>e</sub>. | ||