Runaway electrons in collective electric fields
Abstract
The interactions of runaway electrons with the anomalous-Doppler-shifted mode and a bump-on-tail mode are studied numerically using the Fokker-Planck equation with a self-consistent quasi-linear diffusion operator. It is shown that a velocity threshold exists, below which electrons are not pitch-angle scattered by the self-consistent electric fields. The observed long-time behavior of synchrotron radiation data implies that this velocity threshold must shift to higher velocity as an experiment progresses.
- Publication:
-
Physics of Fluids
- Pub Date:
- June 1978
- DOI:
- 10.1063/1.862337
- Bibcode:
- 1978PhFl...21..940H
- Keywords:
-
- Electric Fields;
- Electrons;
- Particle Motion;
- Tokamak Devices;
- Doppler Effect;
- Fokker-Planck Equation;
- Particle Interactions;
- Propagation Modes;
- Synchrotron Radiation;
- Thresholds;
- Plasma Physics