Particle Pinch with Fully Noninductive Lower Hybrid Current Drive in Tore Supra
Recently, plasmas exceeding 4 min have been obtained with lower hybrid current drive (LHCD) in Tore Supra. These LHCD plasmas extend for over 80 times the resistive current diffusion time with zero loop voltage. Under such unique conditions the neoclassical particle pinch driven by the toroidal electric field vanishes. Nevertheless, the density profile remains peaked for more than 4 min. For the first time, the existence of an inward particle pinch in steady-state plasma without toroidal electric field, much larger than the value predicted by the collisional neoclassical theory, is experimentally demonstrated.
Bibliographic Reference: An article published in: Phys. Rev. Lett. 90, 155002 (2003)
Availability: This article can be accessed online by subscribers, and can be ordered online by non-subscribers, at: http://dx.doi.org/doi:10.1103/PhysRevLett.90.155002
Record Number: 200719152 / Last updated on: 2007-05-21
Original language: en
Available languages: en