The impact of edge gradients in the pressure, density, ion temperature, and electron temperature on edge-localized modes

Journal Article · Tue Mar 15 00:00:00 EDT 2011 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.3570643· OSTI ID:21537286

Kleva, Robert G; Guzdar, Parvez N ^[1]

---

1. Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, Maryland 20742-3511 (United States)

The magnitude of the energy and particle fluxes in simulations of edge-localized modes (ELMs) is determined by the edge gradients in the pressure, density, ion temperature, and electron temperature. The total edge pressure gradient is the dominant influence on ELMs by far. An increase (decrease) of merely 2% in the pressure gradient results in an increase (decrease) of more than a factor of ten in the size of the ELM bursts. At a fixed pressure gradient, the size of the ELM bursts decreases as the density gradient increases, while the size of the bursts increases as the electron temperature gradient or, especially, the ion temperature gradient increases.

• OSTI ID: 21537286
• Journal Information: Physics of Plasmas, Vol. 18, Issue 3; Other Information: DOI: 10.1063/1.3570643; (c) 2011 American Institute of Physics; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
EDGE LOCALIZED MODES
ELECTRON TEMPERATURE
ION TEMPERATURE
PLASMA DENSITY
PLASMA PRESSURE
PLASMA SIMULATION
PRESSURE GRADIENTS
TEMPERATURE GRADIENTS
INSTABILITY
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
SIMULATION