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.
REFERENCES
1.
A. J. Lichtenberg, Regular and Stochastic Motion (Springer, New York, 1983).
2.
3.
Ergodic Problems in Classical Mechanics, edited by V. I. Arnold and A. Avez (Benjamin, New York, 1968).
4.
5.
6.
7.
8.
9.
F.
Skiff
, F.
Anderegg
, and M. Q.
Tran
, Phys. Rev. Lett.
58
, 1430
(1987
).10.
F.
Skiff
, F.
Anderegg
, P. I.
Paris
, T. N.
Good
, M. Q.
Tran
, N.
Rynn
, and R.
Stern
, Phys. Rev. Lett.
61
, 2034
(1988
).11.
G. M.
Zaslavsky
, R. Z.
Sagdeev
, D. A.
Usikov
, and A. A.
Chernikov
, Sov. Phys. Usp.
31
, 887
(1989
).12.
M.
Fivaz
, A.
Fasoli
, K.
Appert
, F.
Skiff
, T. M.
Tran
, and M. Q.
Tran
, Phys. Lett. A
182
, 426
(1993
).13.
14.
15.
P. J.
Paris
, A.
Fasoli
, and N.
Rynn
, Rev. Sci. Instrum.
64
, 1407
(1993
).16.
17.
18.
F. Skiff and A. Fasoli, Proceedings of the Second Experimental Chaos Conference, edited by W. L. Ditto, L. Pecora, M. Schlesinger, M. L. Spano, and S. T. Vohra (World Scientific, Singapore, 1994).
19.
F.
Skiff
, T. N.
Good
, F.
Anderegg
, and P. J.
Paris
, Phys. Lett. A
137
, 57
(1989
).20.
A.
Fasoli
, F.
Skiff
, T. N.
Good
, and P. J.
Paris
, Phys. Rev. Lett.
68
, 2925
(1992
).21.
22.
23.
S. Ichimaru, Principles of Plasma Physics (Benjamin, London, 1973).
24.
R. Z. Sagdeev, D. A. Usikov, and G. M. Zaslavsky, Non-linear Physics (Harwood Academic, Chur, Switzerland, 1988).
25.
A.
Fasoli
, F.
Skiff
, R.
Kleiber
, M. Q.
Tran
, and P. J.
Paris
, Phys. Rev. Lett.
70
, 303
(1993
).26.
J.
Bowles
, R.
McWilliams
, and N.
Rynn
, Phys. Rev. Lett.
68
, 1144
(1992
).27.
C. F. F. Karney, in Intrinsic Stochasticity in Plasmas, edited by G. Laval and D. Grésillon (Editions de Physique, Orsay, 1979), pp. 159–167.
28.
A. Fasoli, Ph.D. thesis No. 1162, EPFL, Lausanne, 1993.
29.
A.
Fasoli
, T. N.
Good
, F.
Anderegg
, F.
Skiff
, P. J.
Paris
, M. Q.
Tran
, and M.
Yamada
, Phys. Rev. Lett.
63
, 2052
(1989
).30.
F.
Anderegg
, P. J.
Paris
, F.
Skiff
, T. N.
Good
, and M. Q.
Tran
, Rev. Sci. Instrum.
61
, 1096
(1990
).
This content is only available via PDF.
© 1994 American Institute of Physics.
1994
American Institute of Physics
You do not currently have access to this content.
