title: [The observations of plasma of AC operation in the CT-6B Tokamak by Ha emissions].
abstract: The spatial distribution and temporal evolution of plasma of AC operation in the CT-6B Tokamak has been observed through Ha emissions by an optical multichannel diagnostic system for the first time. The results show the plasma density is not completely lost during current reversal, therefore, there were no need for second breakdown after the current reversal. The spatial and temporal evolution of plasma is dependent on the current wave forms.
authors.affiliation: Institute of Physics, Chinese Academy of Sciences, 100080 Beijing.
authors.forename: L
authors.initials: L
authors.lastname: Dong
authors.forename: L
authors.initials: L
authors.lastname: Wang