Abstract
Exact correlation function of electric fields of the ion-electron sheet model is obtained using Lenard’s method. The result is an infinite series including the Fourier coefficients of the even Mathieu function of the zeroth order. The spectrum Ik with respect to the wave number k is shown to be proportional k−2. This fact suggest that this model plasma lacks an important nature of plasma—the Debye shielding. The limits in which the plasma parameter tends to zero or also investigated.