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Title: Resonant photoionization of Ni I into autoionizing states
Authors: Lievens, Peter ×
Vandeweert, Erno
Thoen, Peter
Silverans, Roger #
Issue Date: Sep-1996
Publisher: American physical soc
Series Title: Physical Review A, Atomic, Molecular and Optical Physics vol:54 issue:3 pages:2253-2259
Abstract: Two-step resonant photoionization of free Ni atoms is studied by one-color and two-color processes, using pulsed lasers with photon energies around half the ground-state ionization energy. Two-color two-step resonance ionization from the ground state a F-3(4) and the first metastable state a D-3(3) via the triplet states z (3)G(3,4,5)(0) was used to probe the autoionizing states just above the ionization limit. Several strong lines in the one-color ionization spectrum are explained as direct two-photon transitions to autoionizing states, Photoionization cross sections were deduced from saturation measurements. The large cross sections observed for specific one-color two-step transitions are due to the near double resonant excitation into autoionizing states.
ISSN: 1050-2947
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Solid State Physics and Magnetism Section
× corresponding author
# (joint) last author

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