1974/02/01 by G. B. Christoffersen, V. O. Jensen, V.O. Jensen +2 · 17 citations
Physics and Astronomy · #Acoustic wave #Atomic physics #Boundary value problem #Cold Atom Physics and Bose-Einstein Condensates #Computational physics #Convolution (computer science) #Distribution function #Dust and Plasma Wave Phenomena #Function (biology) #Ion #Ion acoustic wave #Landau damping #Phase (matter) #Phase velocity #Physics #Plasma #Quantum electrodynamics #Quantum mechanics #Statistical Mechanics and Entropy #Vlasov equation #Wave propagation
paper · doi:10.1063/1.1694728
published in The Physics of Fluids 17(2), 390-399 (AIP Publishing)
openalex publication_date 1974/02/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/25
The Green's functions for the linearized ion Vlasov equation with a given boundary value are derived. The propagation properties of ion acoustic waves are calculated by performing convolution integrals over the Green's functions. For Te/Ti less than about 3 it is concluded that the collective interaction is very weak and that the propagation properties are determined almost completely by freely streaming ions. The wave damping, being due to phase mixing, is determined by the width of the perturbed distribution function rather than by the slope of the undisturbed distribution function at the phase velocity as concluded from normal mode calculations.