title: Photodesorption of NO from Au(100) using 3D surface-velocity map imaging.
abstract: We measured the fully resolved 3-dimensional velocity distributions of nitric oxide photodesorbed from a gold single crystal. These experiments combine time-of-flight measurements and the velocity map imaging technique to yield velocity distributions resolved in three dimensions for a prototypical surface-adsorbate system. Nitric oxide adsorbed on Au(100) was photodesorbed using a 355 nm laser beam. The desorbed NO molecules were ionised in the gas-phase by resonance-enhanced multi-photon ionisation within a set of velocity map imaging optics. The NO molecules preferentially leave the surface along the surface normal with a very narrow angular distribution, indicating a non-thermal desorption process.
authors.affiliation: School of Chemistry, The University of Manchester, Manchester M13 9PL, United Kingdom.
authors.forename: Saada
authors.initials: S
authors.lastname: Abujarada
authors.affiliation: School of Chemistry, The University of Manchester, Manchester M13 9PL, United Kingdom.
authors.forename: Huda
authors.initials: H
authors.lastname: AlSalem
authors.affiliation: Dalton Cumbrian Facility, The University of Manchester, Moor Row CA24 3HA, United Kingdom.
authors.forename: Urslaan K
authors.initials: UK
authors.lastname: Chohan
authors.affiliation: School of Chemistry, The University of Manchester, Manchester M13 9PL, United Kingdom.
authors.forename: Gemma L
authors.initials: GL
authors.lastname: Draper
authors.affiliation: School of Chemistry, The University of Manchester, Manchester M13 9PL, United Kingdom.
authors.forename: Sven P K
authors.initials: SP
authors.lastname: Koehler