Bifurcated states of ohmically heated tokamak plasmas

TitleBifurcated states of ohmically heated tokamak plasmas
Publication TypeJournal Article
Year of Publication1999
AuthorsMR de Baar, G.MD Hogeweij, N.JL Cardozo
JournalPhysical Review Letters
Volume82
Number1
Pagination89-92
Date PublishedJan 4
ISBN Number0031-9007
Abstract

Experiments in the Rijnhuizen Tokamak Project are reported which show bifurcated states of plasmas in the linear Ohmic confinement regime. One branch is the usual Ohmic state. The second, newly discovered, state features a much broader temperature profile, while the density has a very pronounced gradient near the half radius. The bifurcated states form after off-axis electron cyclotron heating is switched off. The new state contradicts theoretical models which predict improved confinement for peaked density profiles or high collisionality. [S0031-9007(98)08046-6].

DOI10.1103/PhysRevLett.82.89
PID

5902dd25d5be4ff36d0879dec8f15ea9

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