Abstract

With the use of a simple model for the complex frequency-dependent dielectric constant ∊(ω), the electron energy-loss function −Im[1/∊(ω)] was calculated with the model parameters being varied systematically in a physically reasonable range. The intensity as well as the position of structure in −Im[1/∊(ω)] are strongly influenced by the admixture of free-electron- and interband-transition contributions to ∊(ω). Where such admixture effects occur in real materials, it is not meaningful to attribute structure in −Im[1/∊(ω)] exclusively to plasmon excitation or to interband transitions.

© 1969 Optical Society of America

Analysis of Optical- and Inelastic-Electron-Scattering Data. II. Application to Al*†

C. J. Powell
J. Opt. Soc. Am. 60(1) 78-93 (1970)

Analysis of Optical- and Inelastic-Electron-Scattering Data. III. Reflectance Data for Beryllium, Germanium, Antimony, and Bismuth

C. J. POWELL
J. Opt. Soc. Am. 60(2) 214-220 (1970)

Analysis of Infrared Optical Properties of Transition Metals*

Joseph Reichman and Carl Feldman
J. Opt. Soc. Am. 59(11) 1404-1406 (1969)

Padé Summation of the Cauchy Dispersion Equation*

P. W. Langhoff and M. Karplus
J. Opt. Soc. Am. 59(7) 863-871 (1969)

Light Scattering in Terms of Oscillator Strengths and Refractive Indices

Carl M. Penney
J. Opt. Soc. Am. 59(1) 34-42 (1969)