摘要
A three channel CO2 laser forward scattering diagnostic system was set up to study the core plasma density fluctuation in the HT-7 tokamak. The range of the wavenumber measurement in the poloidal direction was kθ= 12 cm^-1 to 34 cm^-1 and the wavenumber resolution was △k = 2.5 cm^-1. The wavenumber spectrum, the coexisting modes and the micro-instability eruption in experiments are presented.
A three channel CO2 laser forward scattering diagnostic system was set up to study the core plasma density fluctuation in the HT-7 tokamak. The range of the wavenumber measurement in the poloidal direction was kθ= 12 cm^-1 to 34 cm^-1 and the wavenumber resolution was △k = 2.5 cm^-1. The wavenumber spectrum, the coexisting modes and the micro-instability eruption in experiments are presented.
基金
supported by National Natural Science Foundation of China (Nos.10335060,10875147)
