Linear delta-f simulations of nonlocal electron heat transport | Zendy

S. Brunner | Zendy; E. Valeo | Zendy; John A. Krommes | Zendy

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Linear delta-f simulations of nonlocal electron heat transport

Author(s) -

S. Brunner,

E. Valeo,

John A. Krommes

Publication year - 2000

Publication title -

physics of plasmas

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.75

H-Index - 160

eISSN - 1089-7674

pISSN - 1070-664X

DOI - 10.1063/1.874131

Subject(s) - physics , collisionality , quantum nonlocality , plasma , amplitude , electron , relaxation (psychology) , fokker–planck equation , statistical physics , quantum electrodynamics , classical mechanics , quantum mechanics , partial differential equation , quantum , tokamak , psychology , social psychology , quantum entanglement

Nonlocal electron heat transport calculations are carried out by making use of some of the techniques developed previously for extending the f method to transport time scale simulations (S. Brunner, E. Valeo, and J. Krommes, Phys. Plasmas 6, 4504 (1999)). By considering the relaxation of small ampli- tude temperature perturbations of an homogeneous Maxwellian background, only the linearized Fokker{Planck equation has to be solved, and direct com- parisons can be made with the equivalent, nonlocal hydrodynamic approach (V. Yu. Bychenkov, W. Rozmus, V. T. Tikhonchuk, and A. V. Brantov, Phys. Rev. Lett.75, 4405 (1995)). A quasineutrality-conserving algorithm is derived for computing the self-consistent electric elds driving the return currents. In the low-collisionality regime, results illustrate the importance of taking account of nonlocality in both space and time.

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