International
Tables for
Crystallography
Volume C
Mathematical, physical and chemical tables
Edited by E. Prince

© International Union of Crystallography 2006
International Tables for Crystallography (2006). Vol. C. ch. 4.3, p. 398

Figure 4.3.4.13 

C. Colliexa
[Figure 4.3.4.13]
Figure 4.3.4.13

The dispersion curve for the excitation of a plasmon (curve 1) merges into the continuum of individual electron–hole excitations (between curves 2 and 4) for a critical wavevector qc. The intermediate curve (3) corresponds to Compton scattering on a free electron.