Electromagnetic Transport from Microtearing Mode Turbulence

Journal Article · Fri Apr 15 00:00:00 EDT 2011 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.106.155004· OSTI ID:21550307

Guttenfelder, W; Kaye, S M; Bell, R E; Hammett, G W; LeBlanc, B P; Mikkelsen, D R ^[1]; Candy, J ^[2]; Nevins, W M; Wang, E ^[3]; Yuh, H ^[4]

---

1. Princeton Plasma Physics Laboratory, Princeton New Jersey 08543 (United States)
2. General Atomics, San Diego, California 92186 (United States)
3. Lawrence Livermore National Laboratory, Livermore, California 94551 (United States)
4. Nova Photonics Inc., Princeton, New Jersey 08540 (United States)

This Letter presents nonlinear gyrokinetic simulations of microtearing mode turbulence. The simulations include collisional and electromagnetic effects and use experimental parameters from a high-{beta} discharge in the National Spherical Torus Experiment. The predicted electron thermal transport is comparable to that given by experimental analysis, and it is dominated by the electromagnetic contribution of electrons free-streaming along the resulting stochastic magnetic field line trajectories. Experimental values of flow shear can significantly reduce the predicted transport.

• OSTI ID: 21550307
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 15 Vol. 106; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
LEPTONS
MAGNETIC FIELDS
NONLINEAR PROBLEMS
SHEAR
SIMULATION
STOCHASTIC PROCESSES
TRAJECTORIES
TURBULENCE