Development of the Megahertz Planar Laser-induced Fluorescence Diagnostic for Plasma Turbulence Visualization

Kuritsyn, Aleksey ; Levinton, Fred M.

Princeton University. Plasma Physics Laboratory.

关键词: Cameras;    Fluorescence;    70 Plasma Physics And Fusion Technology;    Diagnostics;    Turbulence Diagnostics;   

DOI  :  10.2172/827928
RP-ID  :  PPPL-3948
RP-ID  :  AC02-76CH03073
RP-ID  :  827928

美国|英语

来源: UNT Digital Library

【 摘 要 】

A megahertz LIF-based diagnostic system for measuring ion density fluctuations in two spatial dimensions is described. Well resolved spatial and temporal 2D images of turbulent structures will be useful in understanding ion turbulence in magnetically confined plasmas which is a key factor in the performance of fusion experimental devices. A sheet beam of a megahertz repetition rate tunable Alexandrite laser is used to excite ion emission from argon plasma. The fluorescence emitted from the plane of the laser beam is detected with a narrow band interference filter and intensified ultra-fast CCD camera providing 2D images of relative ion density fluctuations every microsecond. It is expected that the edge plasma on fusion devices will be accessible to this technique.