Journal
PHYSICAL REVIEW LETTERS
Volume 115, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.115.025003
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Funding
- European Research Council under the European Union's Seventh Framework Programme (FP7)/ERC [277870]
- NSF CAREER Award [AGS-1054061]
- U.S. DOE Award [DEFG0293ER54197]
- Office of Science of the U.S. Department of Energy [DE-AC02-05CH11231]
- Direct For Mathematical & Physical Scien
- Division Of Physics [1523261] Funding Source: National Science Foundation
- Directorate For Geosciences
- Div Atmospheric & Geospace Sciences [1054061] Funding Source: National Science Foundation
- Division Of Physics
- Direct For Mathematical & Physical Scien [1144374] Funding Source: National Science Foundation
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Nonlinear energy transfer and dissipation in Alfven wave turbulence are analyzed in the first gyrokinetic simulation spanning all scales from the tail of the MHD range to the electron gyroradius scale. For typical solar wind parameters at 1 AU, about 30% of the nonlinear energy transfer close to the electron gyroradius scale is mediated by modes in the tail of the MHD cascade. Collisional dissipation occurs across the entire kinetic range k(perpendicular to)rho(i) greater than or similar to 1. Both mechanisms thus act on multiple coupled scales, which have to be retained for a comprehensive picture of the dissipation range in Alfvenic turbulence.
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