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VOLUME 61 (1995) | ISSUE 12 | PAGE 980
"Strong" helicon in metals with open orbits
The effect of carrier trapping by the field of a large-amplitude rf wave on the electromagnetic properties of precious metals was investigated in a geometry in which open orbits are present. Collisionless absorption by carriers with such orbits is so effective in the linear regime that passage of a helicon through the metal is impossible. It is shown that the trapping of these carriers by the wave field suppresses absorption and makes helicon propagation possible. © 1995 American Institute of Physics.