title: Les propriétés optiques de couches minces d'yttrium sous ultravide statique.
abstract: It is shown that yttrium presents a normal absorption band near 5.6 eV and another band whose characistics depend upon their film structure. The influence of temperature on the films shows the existence of an anomalous absorption phenomenon.
authors.forename: J P
authors.initials: JP
authors.lastname: Pétrakian
authors.forename: J P
authors.initials: JP
authors.lastname: Palmari
authors.forename: G
authors.initials: G
authors.lastname: Rasigni