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The damping of helicon waves in a tipped magnetic field

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Abstract

The damping of helicon waves in indium was measured under nonlocal conditions with a variable angle between the wave vectorq and the magnetic field. In contrast to the predictions of the free-electron theory, the damping was not a monotonic function of the angle and exhibits considerable structure, which is attributed to minima in the Landau damping for certain orientations of the magnetic field. Minima in the damping are to be expected for such field directions as give rise to cyclotron orbits having a substantial number of electron states with orbital velocities perpendicular toq. In simple situations the critical orientations of the magnetic field may be deduced from a given Fermi surface by a geometrical construction. The construction has been extended to indium, and the tipping angles found are in reasonable agreement with the experiment.

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Authors and Affiliations

  1. Department of Physics, Technion, Israel Institute of Technology, Haifa, Israel

    P. Halevi, S. G. Lipson & K. Rabinovitch

Authors
  1. P. Halevi
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  2. S. G. Lipson
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  3. K. Rabinovitch
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Additional information

Based on a thesis to be submitted to the Senate of the Technion, Israel Institute of Technology, in partial fulfillment of the requirements for D.Sc. degree.

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Halevi, P., Lipson, S.G. & Rabinovitch, K. The damping of helicon waves in a tipped magnetic field. J Low Temp Phys 1, 189–199 (1969). https://doi.org/10.1007/BF00628407

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  • DOI: https://doi.org/10.1007/BF00628407

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