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Part 1: Document Description
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Citation |
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Title: |
Collisional broadening of nonlinear resonant wave-particle interactions |
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Identification Number: |
doi:10.7910/DVN/ZBK2QZ |
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Distributor: |
Harvard Dataverse |
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Date of Distribution: |
2021-11-01 |
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Version: |
2 |
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Bibliographic Citation: |
Peter J. Catto, Elizabeth A. Tolman, 2021, "Collisional broadening of nonlinear resonant wave-particle interactions", https://doi.org/10.7910/DVN/ZBK2QZ, Harvard Dataverse, V2 |
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Citation |
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Title: |
Collisional broadening of nonlinear resonant wave-particle interactions |
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Identification Number: |
doi:10.7910/DVN/ZBK2QZ |
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Authoring Entity: |
Peter J. Catto, Elizabeth A. Tolman |
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Distributor: |
Harvard Dataverse |
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Holdings Information: |
https://doi.org/10.7910/DVN/ZBK2QZ |
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Study Scope |
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Keywords: |
Physics, Cordey eigenfunction, Landau resonance, quasilinear operator, resonant wave particles, trapped electron |
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Abstract: |
A general procedure for understanding plasma behavior when resonant wave-particle interactions are the sole destabilizing and transport mechanism or only heating and/or current drive source is highlighted without recourse to involved numerical or analytical treatments. These phenomena are characterized by transport that appears to be collisionless even though collisions play a central role in narrow collisional boundary layers. The order of magnitude estimates, which include nonlinear effects, are shown to provide expressions in agreement with the principle results of recent toroidal Alfvén eigenmode (TAE), toroidal magnetic field ripple, and heating and current drive treatments. More importantly, the retention of nonlinearities leads to new estimates of the alpha particle energy diffusivity at saturation for TAE modes, and the ripple threshold at which superbanana plateau evaluations of alpha particle transport are modified by nonlinear radial drift effects. In addition, the estimates indicate when quasilinear descriptions for heating and current drive will begin to fail. The phenomenological procedure demonstrates that in magnetic fusion relevant plasmas narrow collisional boundary layers must be retained for resonant wave-particle interactions as they enhance the role of collisions, and make stochastic particle motion unlikely to be more important than other nonlinear process. |
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Notes: |
<a href="http://library.psfc.mit.edu/catalog/reports/2020/21ja/21ja014/abstract.php">PSFC REPORT PSFC/JA-21-14</a><br /><br />This work supported by the U. S. Department of Energy grant DE-FG02-91ER-54109 at MIT, and a Bezos Membership at the Institute for Advanced Study<br /><br />If this record does not contain the full text, then the manuscript has been embargoed by the publisher thus restricting open access for 12 to 24 months after publication. |
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Methodology and Processing |
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Sources Statement |
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Data Access |
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Other Study Description Materials |
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Label: |
21ja014_archival_manuscript.pdf |
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Notes: |
application/pdf |