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Nonlinear phase mixing and phase-space cascade of entropy in gyrokinetic plasma turbulence.

Abstract:

Electrostatic turbulence in weakly collisional, magnetized plasma can be interpreted as a cascade of entropy in phase space, which is proposed as a universal mechanism for dissipation of energy in magnetized plasma turbulence. When the nonlinear decorrelation time at the scale of the thermal Larmor radius is shorter than the collision time, a broad spectrum of fluctuations at sub-Larmor scales is numerically found in velocity and position space, with theoretically predicted scalings. The resu...

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Publication status:
Published

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Journal:
Physical Review Letters More from this journal
Volume:
103
Issue:
1
Pages:
015003
Publication date:
2009-07-01
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
Language:
English
Keywords:
Pubs id:
pubs:161281
UUID:
uuid:cacb5383-5ccd-4383-88e6-6824f520206c
Local pid:
pubs:161281
Source identifiers:
161281
Deposit date:
2012-12-19

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