Feedback Assisted Experimental Studies of Zonal-Flow Saturation and Scalings

Journal Article · Fri Jan 15 00:00:00 EST 2010 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.104.025002· OSTI ID:21386906

Sokolov, V; Wei, X; Sen, A K ^[1]

---

1. Plasma Research Laboratory, Columbia University, New York, New York 10027 (United States)

The unique complementary roles of ion acoustic damping and zonal-flow (ZF) shearing in the saturation of ion temperature gradient modes (ITG) has been experimentally demonstrated using stabilizing and destabilizing feedback techniques. This was done in the context of experimental studies of ZF scalings over a wide parameter range. Furthermore, the scaling of ZF amplitude with that of ITG via increasing ITG drive through increasing ion temperature gradient via rf heating reveals an expected monotonic behavior.

• OSTI ID: 21386906
• Journal Information: Physical Review Letters, Vol. 104, Issue 2; Other Information: DOI: 10.1103/PhysRevLett.104.025002; (c) 2010 The American Physical Society; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
DAMPING
FEEDBACK
HEATING
ION TEMPERATURE
RF SYSTEMS
TEMPERATURE GRADIENTS