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Title: Nonlocal transport in toroidal plasma devices

Abstract

Collisional particle transport is examined in several toroidal plasma devices in the presence of perturbations typical of modes leading up to a disruption, of saturated tearing modes, or of unstable Alfvén modes. The existence of subdiffusive transport for electrons is found to occur in some cases at very low mode amplitudes and to also exist even for ions of high energy. Orbit resonances can produce long time correlations and traps for particle trajectories at perturbation amplitudes much too small for the orbits to be represented as uniformly chaotic. Here, the existence and nature of subdiffusive transport is found to depend on the nature of the mode spectrum and frequency as well as the mode amplitudes.

Authors:
ORCiD logo [1];  [2]; ORCiD logo [3];  [4];  [5]
  1. Consiglio Nazionale delle Ricerche, Padova (Italy)
  2. Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
  3. Max-Planck-Institut fur Plasmaphysik, Garching (Germany)
  4. Max-Planck-Institut fuer Plasmaphysik, Bayern (Germany)
  5. IFP-CNR, ENEA-CNR, Milan (Italy)
Publication Date:
Research Org.:
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1484032
Grant/Contract Number:  
633053; AC02-09CH11466; FC02-04ER54698
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Nuclear Fusion
Additional Journal Information:
Journal Name: Nuclear Fusion; Journal ID: ISSN 0029-5515
Publisher:
IOP Science
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Spizzo, Gianluca, White, Roscoe B., Maraschek, Marc, Igochine, Valentin, and Granucci, Gustavo. Nonlocal transport in toroidal plasma devices. United States: N. p., 2018. Web. doi:10.1088/1741-4326/aaf07c.
Spizzo, Gianluca, White, Roscoe B., Maraschek, Marc, Igochine, Valentin, & Granucci, Gustavo. Nonlocal transport in toroidal plasma devices. United States. doi:10.1088/1741-4326/aaf07c.
Spizzo, Gianluca, White, Roscoe B., Maraschek, Marc, Igochine, Valentin, and Granucci, Gustavo. Tue . "Nonlocal transport in toroidal plasma devices". United States. doi:10.1088/1741-4326/aaf07c.
@article{osti_1484032,
title = {Nonlocal transport in toroidal plasma devices},
author = {Spizzo, Gianluca and White, Roscoe B. and Maraschek, Marc and Igochine, Valentin and Granucci, Gustavo},
abstractNote = {Collisional particle transport is examined in several toroidal plasma devices in the presence of perturbations typical of modes leading up to a disruption, of saturated tearing modes, or of unstable Alfvén modes. The existence of subdiffusive transport for electrons is found to occur in some cases at very low mode amplitudes and to also exist even for ions of high energy. Orbit resonances can produce long time correlations and traps for particle trajectories at perturbation amplitudes much too small for the orbits to be represented as uniformly chaotic. Here, the existence and nature of subdiffusive transport is found to depend on the nature of the mode spectrum and frequency as well as the mode amplitudes.},
doi = {10.1088/1741-4326/aaf07c},
journal = {Nuclear Fusion},
number = ,
volume = ,
place = {United States},
year = {Tue Nov 13 00:00:00 EST 2018},
month = {Tue Nov 13 00:00:00 EST 2018}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on November 13, 2019
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