A fluid-kinetic framework for self-consistent runaway-electron simulations

Hirvijoki, Eero; Liu, Chang; Zhang, Guannan; del-Castillo-Negrete, Diego B.; Brennan, Dylan P.

doi:10.1063/1.5030424

Title: A fluid-kinetic framework for self-consistent runaway-electron simulations

Journal Article · 21 June 2018 · Physics of Plasmas

DOI: https://doi.org/10.1063/1.5030424 · OSTI ID:1515691

^[1];

^[2];

^[2]; Brennan, Dylan P. ^[1]

Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

The problem of self-consistently coupling kinetic runaway-electron physics to the macroscopic evolution of the plasma is addressed by dividing the electron population into a bulk and a tail. A probabilistic closure is adopted to determine the coupling between the bulk and the tail populations, preserving them both as genuine, non-negative distribution functions. Here, macroscopic one-fluid equations and the kinetic equation for the runaway-electron population are then derived, now displaying sink and source terms due to transfer of electrons between the bulk and the tail.

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: AC05-00OR22725; AC02-09CH11466; SC0016268

OSTI ID:: 1515691

Alternate ID(s):: OSTI ID: 1456262

Journal Information:: Physics of Plasmas, Vol. 25, Issue 6; ISSN 1070-664X

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 5 works

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