Determination of optical constants of scandium films in the 20-1000 eV range.
The transmittance of thin films of Sc deposited by evaporation in ultrahigh vacuum conditions has been investigated in the 20-1000 eV spectral range. Transmittance measurements were performed in situ on Sc layers that were deposited over grids coated with a C support film. Transmittance measurements were used to obtain the extinction coefficient of Sc films at each individual photon energy investigated. These data, along with the data available in the literature for the rest of the spectrum, were used to obtain the refractive index of Sc by means of the Kramers-Krönig analysis. Sum-rule tests indicated an acceptable consistency of the data.
Fernández-Perea
Mónica
M
Instituto de Fisica Aplicada-Consejo Superior de Investigaviones Científicas, C/Serrano 144, 28006 Madrid, Spain.
Larruquert
Juan I
JI
Aznárez
José A
JA
Méndez
José A
JA
Poletto
Luca
L
Malvezzi
A Marco
AM
Giglia
Angelo
A
Nannarone
Stefano
S