Chargeons and phonons in a dusty plasma
Física de Plasmas, Instituto Superior Técnico 1049-001
2 Theoretical Physics Division, Physical Research Laboratory Navrangpura, Ahmedabad 380009, India
Accepted: 29 March 2001
The quantization procedure for low-frequency modes in a plasma has been generalized to include dust-Coulomb waves (DCWs) which are driven by the grain charge oscillations in a dusty plasma. We thus introduce the concept of "chargeon", the elementary excitation of the ultra low-frequency electrostatic fields in a dusty plasma, which are mainly supported by the grain charge oscillations. Their characteristic features are similar to the usual phonons, but they correspond to very different physical properties of the medium.
PACS: 52.35.Fp – Electrostatic waves and oscillations (e.g., ion-acoustic waves) / 03.70.+k – Theory of quantized fields
© EDP Sciences, 2001