Abstract
Optical properties of thin antimony films are measured in ultra-high vacuum in the energy range 2.5-14.5 eV. The epsilon 2E2 curve shows a great number of interband transitions between 3.8 and 11 eV which are interpreted with the help of band structure calculations. The volume plasmon is situated at 15.8 eV and the surface plasmon is identified at about 11 eV.