title: Experimental observation of rotational Doppler broadening in a molecular system.
abstract: The first experimental evidence of rotational Doppler broadening in photoelectron spectra, reported here, show good agreement with recently described theoretical predictions. The dependence of the broadening on temperature and photoelectron kinetic energy is quantitatively predicted by the theory. The experiments verify that the rotational contributions to the linewidth are comparable to those from translational Doppler broadening and must be considered in the analysis of high-resolution photoelectron spectra. A classical model accounting for this newly observed effect is presented.
authors.affiliation: Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, USA.
authors.forename: T D
authors.initials: TD
authors.lastname: Thomas
authors.forename: E
authors.initials: E
authors.lastname: Kukk
authors.forename: K
authors.initials: K
authors.lastname: Ueda
authors.forename: T
authors.initials: T
authors.lastname: Ouchi
authors.forename: K
authors.initials: K
authors.lastname: Sakai
authors.forename: T X
authors.initials: TX
authors.lastname: Carroll
authors.forename: C
authors.initials: C
authors.lastname: Nicolas
authors.forename: O
authors.initials: O
authors.lastname: Travnikova
authors.forename: C
authors.initials: C
authors.lastname: Miron