Study of Slow Evolution L-H Transitions. Ideal situation for studying evolution of Ti, velocity flows, and Er before L-H transition.
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It has previously been observed in discharges with unfavorable drift direction (reversed field LSN and normal field USN) that there is a slow evolution of certain parameters preceding the L-H transition.
The edge temperature pedestal builds up slowly over a long period of time preceding the transition.
Edge density pedestal is not effected.
Blatant figure thievery from Amanda Hubbard (2006 APS)