Photoemission in the NO molecular frame induced by soft-x-ray elliptically polarized light above the N(1s){sup -1} and O(1s){sup -1} ionization thresholds

Journal Article · Tue May 15 00:00:00 EDT 2007 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.75.052718· OSTI ID:20982536

Li, W B; Houver, J C; Dowek, D ^[1]; Montuoro, R; Lucchese, R R ^[2]; Journel, L; Haouas, A; Simon, M ^[3]

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1. Laboratoire des Collisions Atomiques et Moleculaires (UMR 8625 UPS-CNRS), Batiment 351, Universite Paris-Sud, 91405 Orsay (France)
2. Department of Chemistry, Texas A and M University, College Station, Texas 77843-3255 (United States)
3. Laboratoire de Chimie Physique-Matiere et Rayonnement (UMR 7614 UPMC-CNRS), 11 rue Pierre et-Marie Curie, 75231 Paris Cedex 05 (France)

Complete experiments in inner-shell photoionization of linear molecules are achieved by combining the velocity vector correlation method, based on imaging and time-of-flight-resolved electron-ion-ion coincidence technique, with the use of elliptically polarized light. We report here on the molecular frame photoelectron angular distributions (MFPADs) obtained using this method in a single experiment performed with elliptically polarized light, for a site selective K-shell ionization of the NO molecule in the region of the N(1s){sup -1} and O(1s){sup -1} shape resonances. For a comparable photoelectron energy the N(1s){sup -1} and O(1s){sup -1} MFPADs display a remarkable symmetry in the inversion with respect to the emission center of the NO molecule, while revealing common features such as, in particular, the dominant role of p and f partial-wave channels in the photoelectron emission. A large molecular frame circular dichroism is observed. These results are well predicted by multichannel Schwinger configuration interaction calculations (MCSCI), which provide additional information for NO{sup +}({sup 3}{pi}) and NO{sup +}({sup 1}{pi}) multiplet specific photoionization reactions. The analysis of the photoelectron-ion-ion kinetic energy correlation characterizes the ionic fragmentation channels populated after Auger decay of the NO{sup +}(1s{sub N} at {sub {approx}}{sub sol{approx}} at {sub O}){sup -1} ionic states.

• OSTI ID: 20982536
• Journal Information: Physical Review. A, Vol. 75, Issue 5; Other Information: DOI: 10.1103/PhysRevA.75.052718; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ANGULAR DISTRIBUTION
AUGER EFFECT
CONFIGURATION INTERACTION
CORRELATIONS
DICHROISM
DISSOCIATION
K SHELL
MOLECULAR IONS
MOLECULES
NITROGEN OXIDES
PARTIAL WAVES
PHOTOELECTRON SPECTROSCOPY
PHOTOEMISSION
PHOTOIONIZATION
PHOTOLYSIS
PHOTON-MOLECULE COLLISIONS
SOFT X RADIATION
SPECTRA
SYMMETRY
TIME-OF-FLIGHT METHOD