title: Emission pattern of real vapor sources in high vacuum: an overview.
abstract: Emission characteristics of real vapor sources are analyzed on the basis of experimental results. It is found that some real sources have complex emission behaviors that agree only with a model that assumes a virtual surface instead of the real one.
authors.affiliation: Centro de Investigaciones en Optica, Apartado Postal 1-948, CP 37000, León, Gto, Mexico. fvilla@foton.cio.mx
authors.forename: F
authors.initials: F
authors.lastname: Villa
authors.forename: O
authors.initials: O
authors.lastname: Pompa