Study of Wave Particle Interaction from the Linear Regime to Dynamical Chaos in a Magnetized Plasma

The onset of chaotic ion dynamics in electrostatic waves is investigated in a linear magnetized plasma. The existence of a threshold for heating in agreement with the predictions of single particle Hamiltonian theories and the fast time scale for velocity space diffusion are observed in the experiment. Measurements of test-particle dynamics indicate an exponential separation of initially close ion trajectories for amplitudes above the heating threshold. Ion orbits in the different wave-particle interaction regimes are inferred using an optical tagging diagnostic method, which provides the two point correlation function in phase space.


Published in:
Physics of Plasmas, 1, 5, 1452-1460
Year:
1994
ISSN:
1070-664X
ISBN:
1070-664X
Note:
Part 2
Laboratories:
SPC
CRPP




 Record created 2008-04-16, last modified 2018-09-13


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