Nondipole effects in molecular nitrogen valence shell photoionization.

Conference · Sat Jan 01 04:00:00 EST 2005 · J. Electron Spectros. Related Phenomena

DOI:https://doi.org/10.1016/j.elspec.2005.01.246· OSTI ID:971906

Hemmers, O; Guillemin, R; Rolles, D; Wolska, A; Lindle, D W; Kanter, E P; Kraessig, B; Southworth, S H; Wehlitz, R; Zimmermann, B; McKoy, V; Langhoff, P W; LBNL,

Nondipole photoelectron parameters {zeta} have been obtained experimentally for the outer-valence 3{sigma}{sub g}, 1{pi}{sub {mu}} and 2{sigma}{sub {mu}} shells in molecular nitrogen from threshold to {approx} 200 eV photon energy. Significant nondipole effects are observed even in the immediate threshold regions of these valence-shell distributions. The results of preliminary calculations for the 3{sigma}{sub g} and 2{sigma}{sub {mu}} clarify the origins of the observed features in terms of contributing molecular symmetry channels. Theory and experiment are in excellent accord, suggesting that the large nondipole effects previously observed in atoms and the K-shells of molecules can also appear at low photon energies in the outer-valence shells of molecules.

• Research Organization: Argonne National Laboratory (ANL)
• Sponsoring Organization: SC; NSF; FOR
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 971906
• Report Number(s): ANL/CHM/CP-114280
• Conference Information: Journal Name: J. Electron Spectros. Related Phenomena Journal Issue: 2005 Journal Volume: 144-147
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ATOMS
FAR ULTRAVIOLET RADIATION
NITROGEN
PHOTOIONIZATION
PHOTONS
PHYSICS
SYMMETRY
VALENCE