A fluid-kinetic framework for self-consistent runaway-electron simulations
Abstract
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.
- Authors:
-
[1];
[1];
[2];
[2];
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1515691
- Alternate Identifier(s):
- OSTI ID: 1456262
- Grant/Contract Number:
- AC05-00OR22725; AC02-09CH11466; SC0016268
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physics of Plasmas
- Additional Journal Information:
- Journal Volume: 25; Journal Issue: 6; Journal ID: ISSN 1070-664X
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Citation Formats
Hirvijoki, Eero, Liu, Chang, Zhang, Guannan, del-Castillo-Negrete, Diego B., and Brennan, Dylan P. A fluid-kinetic framework for self-consistent runaway-electron simulations. United States: N. p., 2018.
Web. doi:10.1063/1.5030424.
Hirvijoki, Eero, Liu, Chang, Zhang, Guannan, del-Castillo-Negrete, Diego B., & Brennan, Dylan P. A fluid-kinetic framework for self-consistent runaway-electron simulations. United States. https://doi.org/10.1063/1.5030424
Hirvijoki, Eero, Liu, Chang, Zhang, Guannan, del-Castillo-Negrete, Diego B., and Brennan, Dylan P. Thu .
"A fluid-kinetic framework for self-consistent runaway-electron simulations". United States. https://doi.org/10.1063/1.5030424. https://www.osti.gov/servlets/purl/1515691.
@article{osti_1515691,
title = {A fluid-kinetic framework for self-consistent runaway-electron simulations},
author = {Hirvijoki, Eero and Liu, Chang and Zhang, Guannan and del-Castillo-Negrete, Diego B. and Brennan, Dylan P.},
abstractNote = {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.},
doi = {10.1063/1.5030424},
journal = {Physics of Plasmas},
number = 6,
volume = 25,
place = {United States},
year = {Thu Jun 21 00:00:00 EDT 2018},
month = {Thu Jun 21 00:00:00 EDT 2018}
}
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Figures / Tables:
FIG. 1: Computation of 1-$Φ$ , i.e., the runaway probability, using the simplified 2D momentum space model for particle characteristics. For illustration purposes we fixed $τ$$r$ = 1, $t$ = 0.4 and changed $Z$ and $E$. The boundary in this case was assumed to be at $p$ = 4. Asmore »
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Works referencing / citing this record:
Conservative magnetic moment of runaway electrons and collisionless pitch-angle scattering
journal, August 2018
- Liu, Chang; Qin, Hong; Hirvijoki, Eero
- Nuclear Fusion, Vol. 58, Issue 10
Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.