عنوان مقاله [English]
نویسندگان [English]چکیده [English]
Any periodic motion of a fluid can be decomposed by Fourier analysis into a
superposition of sinusoidal oscillation with different frequencies and
wavenumbers . Therefore energy of a wave is equivalent to total energy of
Fourier components and is proportional to the square of these coefficients.
The wave number and frequency of maximum energy is the same as that of
main mode of system which is satisfied in dispersion relation. In this paper
the dispersion relation of ion acoustic wave has been studied by using a
particle simulation code which is written by authors.