Title: Resonances between high energy particles and ideal magnetohydrodynamic modes in tokamaks

Journal Article · · Physics of Plasmas
DOI: https://doi.org/10.1063/1.5046655 · OSTI ID:1480329
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1];  [2]
  1. Princeton Univ., Princeton, NJ (United States)
  2. Univ. of Texas, Austin, TX (United States)
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Particle trajectory surfaces in an ideal magnetohydrodynamic high energy particle resonance are studied using kinetic Poincaré plots and through a calculation by perturbing near the resonance and finding canonical variables in the resonance, allowing the study of the distortion of the structure from that of a simple pendulum and to assist in the construction of models for the modification of particle distributions due to the modes. As a result, it is found that the narrow structure of an ideal mode eigenfunction can lead to a significant decrease in the resonance width compared to a case in which the eigenfunction does not vary within the resonant island.

Research Organization:
Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-09CH11466
OSTI ID:
1480329
Journal Information:
Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 10 Vol. 25; ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (4)

Verification and application of resonance broadened quasi-linear (RBQ) model with multiple Alfvénic instabilities journal July 2019
Collisional enhancement of energetic particle Alfvénic resonance width in tokamaks journal March 2019
A simple model for perturbative kinetic particle resonances in tokamaks journal April 2019
Stability analysis of secondary modes, driven by the phase space island journal June 2019

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