简介:Understandingtheimprovedconfinementstillremainoneofthemajorgoalsofthetokamakfusionprogram,andmostimportantresearchschemesintokamakrelatetoplasmaconfinementwithauxiliaryheatingandcurrentdrive.Whenauxiliarypowerexceedsathresholdvalue,L-Htransitionwilltakeplace.Theoretiesandexperimentsshowthatthistransitionisconcernedwiththeshearedplasmapoloidalrotationintheedge.Whenanexternalelectromagneticwaveisinjectedintoplasmabyantenna,