Abstract
It is shown that the complete spectrum, continuous as well as discrete, and corresponding eigenfunctions of the Vlasov operator can be obtained by a single perturbation procedure from the purely continuous spectrum and corresponding eigenfunctions of the free-streaming operator. In addition we present an alternative definition of the eigenfunctions and show that the problem of normalizing the continuous eigenmodes is thus solved automatically.
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Sedláček, Z. Perturbation approach to plasma oscillations. Czech J Phys 18, 618–628 (1968). https://doi.org/10.1007/BF01691013
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DOI: https://doi.org/10.1007/BF01691013