Low-Energy Nondipole Effects in Molecular Nitrogen Valence-Shell Photoionization

Authors

Oliver Hemmers, University of Nevada, Las VegasFollow
Renaud Guillemin, CNRS, Laboratoire de Chimie Physique-Matière et RayonnementFollow
D. Rolles, Lawrence Berkeley National LaboratoryFollow
A. Wolska, Lawrence Berkeley National LaboratoryFollow
Dennis W. Lindle, University of Nevada, Las VegasFollow
E. P. Kanter, Argonne National LaboratoryFollow
B. Krassig, Argonne National Laboratory
S. H. Southworth, Argonne National Laboratory
R. Wehlitz, Synchrotron Radiation Center, University of WisconsinFollow
B. Zimmermann, A. A. Noyes Laboratory of Chemical Physics, California Institute of TechnologyFollow
V. McKoy, A. A. Noyes Laboratory of Chemical Physics, California Institute of Technology
P. W. Langhoff, San Diego Supercomputer Center, University of CaliforniaFollow

Document Type

Article

Publication Date

9-2006

Publication Title

Physical review letters

Publisher

American Physical Society

Volume

97

Issue

10

First page number:

103006-1

Last page number:

103006-4

Abstract

Observations are reported for the first time of significant nondipole effects in the photoionization of the outer-valence orbitals of diatomic molecules. Measured nondipole angular-distribution parameters for the 3σ_g, 1π_u, and 2σ_u shells of N₂ exhibit spectral variations with incident photon energies from thresholds to ∼200  eV which are attributed via concomitant calculations to particular final-state symmetry waves arising from (E1)⊗(M1,E2) radiation-matter interactions first-order in photon momentum. Comparisons with previously reported K-edge studies in N₂ verify linear scaling with photon momentum, accounting in part for the significantly enhanced nondipole behavior observed in inner-shell ionization at correspondingly higher momentum values in this molecule.

Controlled Subject

Angular distribution (Nuclear physics); Conduction electrons; Dipole moments

Disciplines

Atomic, Molecular and Optical Physics | Inorganic Chemistry | Nuclear | Physical Chemistry

File Format

pdf

File Size

237 KB

Language

English

Comments

Also published in: ALS Activity Report, Science Highlights 2006, p. 72, July 2007

Permissions

Copyright American Physical Society. Used with permission.

Rights

IN COPYRIGHT. For more information about this rights statement, please visit http://rightsstatements.org/vocab/InC/1.0/

Repository Citation

Hemmers, O., Guillemin, R., Rolles, D., Wolska, A., Lindle, D. W., Kanter, E. P., Krassig, B., Southworth, S. H., Wehlitz, R., Zimmermann, B., McKoy, V., Langhoff, P. W. (2006). Low-Energy Nondipole Effects in Molecular Nitrogen Valence-Shell Photoionization. Physical review letters, 97(10), 103006-1-103006-4.
https://digitalscholarship.unlv.edu/hrc_fac_articles/13