Eigenvalue solution to the electron-collisional effect on ion-acoustic and entropy waves

The linearized electron Fokker- Planck and cold-ion fluid equations are solved as an eigenvalue problem in the quasineutral limit for ionization state, Z = 1, 8, and 64 for ion-acoustic and entropy waves. The perturbed electron distribution function is written as a moment expansion of eigenvectors, and is used to compute collisionality-dependence macroscopic quantities in the plasma such as the generalized specific heat ratio, and the electron thermal conductivity.