Asymmetry between deuterium and tritium turbulent particle flows

Belli, E. A.; Candy, J.

doi:10.1063/5.0048620

Title: Asymmetry between deuterium and tritium turbulent particle flows

Journal Article · 01 June 2021 · Physics of Plasmas

DOI: https://doi.org/10.1063/5.0048620 · OSTI ID:1786323

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General Atomics, San Diego, CA (United States); General Atomics, Energy & Advanced Concepts, DIII-D
General Atomics, San Diego, CA (United States)

The asymmetry between deuterium (D) and tritium (T) turbulent particle fluxes in mixed D–T plasmas is studied with numerical simulations of nonlinear gyrokinetic turbulence in ion temperature gradient-dominated and trapped electron mode-dominated regimes. At 50–50 D–T concentration, the asymmetry, or flow separation, between D and T fluxes is such that the tritium is better confined than the deuterium in both regimes. To supplement the nonlinear simulations, an analytic quasilinear theory of the particle flux symmetry breaking is developed and is valid for general electron dynamics. Furthermore, this theory correctly predicts the numerically computed deviation in the ion density fraction (from 50–50), or ion density gradient (from the electron gradient), required to restore equal deuterium and tritium fluxes.

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Research Organization:: General Atomics, San Diego, CA (United States)

Sponsoring Organization:: USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division; USDOE Office of Science (SC), Fusion Energy Sciences (FES)

Grant/Contract Number:: AC02-05CH11231; AC05-00OR22725; FC02-06ER54873; FG02-95ER54309; SC0017992

OSTI ID:: 1786323

Journal Information:: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 6 Vol. 28; ISSN 1070-664X

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

Country of Publication:: United States

Language:: English

References (24)

Comparison of initial value and eigenvalue codes for kinetic toroidal plasma instabilities Kotschenreuther, Mike; Rewoldt, G.; Tang, W. M. Computer Physics Communications, Vol. 88, Issue 2-3 https://doi.org/10.1016/0010-4655(95)00035-E	journal	August 1995
A high-accuracy Eulerian gyrokinetic solver for collisional plasmas Candy, J.; Belli, E. A.; Bravenec, R. V. Journal of Computational Physics, Vol. 324 https://doi.org/10.1016/j.jcp.2016.07.039	journal	November 2016
Theory-based modeling of particle transport in ASDEX Upgrade H-mode plasmas, density peaking, anomalous pinch and collisionality Angioni, C.; Peeters, A. G.; Pereverzev, G. V. Physics of Plasmas, Vol. 10, Issue 8 https://doi.org/10.1063/1.1589009	journal	August 2003
Gyrokinetic simulations of ion and impurity transport Estrada-Mila, C.; Candy, J.; Waltz, R. E. Physics of Plasmas, Vol. 12, Issue 2 https://doi.org/10.1063/1.1848544	journal	February 2005
Tokamak profile prediction using direct gyrokinetic and neoclassical simulation Candy, J.; Holland, C.; Waltz, R. E. Physics of Plasmas, Vol. 16, Issue 6 https://doi.org/10.1063/1.3167820	journal	June 2009
Isotope mass and charge effects in tokamak plasmas Pusztai, I.; Candy, J.; Gohil, P. Physics of Plasmas, Vol. 18, Issue 12 https://doi.org/10.1063/1.3663844	journal	December 2011
Microturbulence study of the isotope effect Bustos, A.; Bañón Navarro, A.; Görler, T. Physics of Plasmas, Vol. 22, Issue 1 https://doi.org/10.1063/1.4905637	journal	January 2015
Multispecies density peaking in gyrokinetic turbulence simulations of low collisionality Alcator C-Mod plasmas Mikkelsen, D. R.; Bitter, M.; Delgado-Aparicio, L. Physics of Plasmas, Vol. 22, Issue 6 https://doi.org/10.1063/1.4922069	journal	June 2015
Isotope and fast ions turbulence suppression effects: Consequences for high-β ITER plasmas Garcia, J.; Görler, T.; Jenko, F. Physics of Plasmas, Vol. 25, Issue 5 https://doi.org/10.1063/1.5016331	journal	May 2018
Reversal of turbulent gyroBohm isotope scaling due to nonadiabatic electron drive Belli, E. A.; Candy, J.; Waltz, R. E. Physics of Plasmas, Vol. 26, Issue 8 https://doi.org/10.1063/1.5110401	journal	August 2019
General theory of kinetic ballooning modes Frieman, E. A.; Rewoldt, G.; Tang, W. M. Physics of Fluids, Vol. 23, Issue 9 https://doi.org/10.1063/1.863201	journal	January 1980
A gyro-Landau-fluid transport model Waltz, R. E.; Staebler, G. M.; Dorland, W. Physics of Plasmas, Vol. 4, Issue 7 https://doi.org/10.1063/1.872228	journal	July 1997
Noncircular, finite aspect ratio, local equilibrium model Miller, R. L.; Chu, M. S.; Greene, J. M. Physics of Plasmas, Vol. 5, Issue 4 https://doi.org/10.1063/1.872666	journal	April 1998
Kinetic calculation of neoclassical transport including self-consistent electron and impurity dynamics Belli, E. A.; Candy, J. Plasma Physics and Controlled Fusion, Vol. 50, Issue 9 https://doi.org/10.1088/0741-3335/50/9/095010	journal	July 2008
A unified method for operator evaluation in local Grad–Shafranov plasma equilibria Candy, J. Plasma Physics and Controlled Fusion, Vol. 51, Issue 10 https://doi.org/10.1088/0741-3335/51/10/105009	journal	September 2009
Particle transport in tokamak plasmas, theory and experiment Angioni, C.; Fable, E.; Greenwald, M. Plasma Physics and Controlled Fusion, Vol. 51, Issue 12 https://doi.org/10.1088/0741-3335/51/12/124017	journal	November 2009
The role of ion and electron electrostatic turbulence in characterizing stationary particle transport in the core of tokamak plasmas Fable, E.; Angioni, C.; Sauter, O. Plasma Physics and Controlled Fusion, Vol. 52, Issue 1 https://doi.org/10.1088/0741-3335/52/1/015007	journal	December 2009
A new mechanism for increasing density peaking in tokamaks: improvement of the inward particle pinch with edge E × B shearing Garcia, J.; Doerk, H.; Görler, T. Plasma Physics and Controlled Fusion, Vol. 61, Issue 10 https://doi.org/10.1088/1361-6587/ab31a4	journal	August 2019
Gyrokinetic nonlinear isotope effects in tokamak plasmas Garcia, J.; Görler, T.; Jenko, F. Nuclear Fusion, Vol. 57, Issue 1 https://doi.org/10.1088/1741-4326/57/1/014007	journal	December 2016
Fast H isotope and impurity mixing in ion-temperature-gradient turbulence Bourdelle, C.; Camenen, Y.; Citrin, J. Nuclear Fusion, Vol. 58, Issue 7 https://doi.org/10.1088/1741-4326/aacd57	journal	July 2018
First-principles-based multiple-isotope particle transport modelling at JET Marin, M.; Citrin, J.; Bourdelle, C. Nuclear Fusion, Vol. 60, Issue 4 https://doi.org/10.1088/1741-4326/ab60d1	journal	February 2020
Isotope Effects on Trapped-Electron-Mode Driven Turbulence and Zonal Flows in Helical and Tokamak Plasmas Nakata, Motoki; Nunami, Masanori; Sugama, Hideo Physical Review Letters, Vol. 118, Issue 16 https://doi.org/10.1103/PhysRevLett.118.165002	journal	April 2017
Reversal of Simple Hydrogenic Isotope Scaling Laws in Tokamak Edge Turbulence Belli, E. A.; Candy, J.; Waltz, R. E. Physical Review Letters, Vol. 125, Issue 1 https://doi.org/10.1103/PhysRevLett.125.015001	journal	June 2020
Shear, Periodicity, and Plasma Ballooning Modes Connor, J. W.; Hastie, R. J.; Taylor, J. B. Physical Review Letters, Vol. 40, Issue 6 https://doi.org/10.1103/PhysRevLett.40.396	journal	February 1978

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70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Deuterium
Fusion energy
Gyrokinetic simulations
Isotope
Partial differential equations
Physical quantities
Plasma confinement
Plasma instabilities
Plasma transport properties
Quasilinear theory
Transport
Tritium
Turbulence
turbulence
transport
isotope

Title: Asymmetry between deuterium and tritium turbulent particle flows

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