Resonant three-Photon Ionization Spectroscopy of Atomic Fe

Journal Article · Sun Dec 01 04:00:00 EST 2013 · Journal of Physics. B, Atomic, Molecular and Optical Physics

DOI:https://doi.org/10.1088/0953-4075/46/24/245003· OSTI ID:1110939

Liu, Yuan ^[1]; Gottwald, T. ^[2]; Havener, Charles C. ^[1]; Mattolat, C. ^[2]; Vane, C Randy ^[1]; Wendt, K. ^[2]

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1. ORNL
2. Johannes Gutenberg-Universitat Mainz, Germany

Laser spectroscopic investigations on high-lying states around the ionization potential in the atomic spectrum of Fe have been carried out for development of a practical three-step resonance ionization scheme accessible by Ti:Sapphire lasers. A hot cavity laser ion source typically used at on-line radioactive ion beam production facilities was employed in this work. Ionization schemes employing high-lying Rydberg and autoionizing states populated by three-photon excitations were established. Five new Rydberg and autoionizing Rydberg series converging to the ground and to the first four excited states of Fe II are reported. Analyses of the Rydberg series yield the value 63737.686 ± 0.068 cm-1 for the ionization potential of iron.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1110939
• Journal Information: Journal of Physics. B, Atomic, Molecular and Optical Physics, Journal Name: Journal of Physics. B, Atomic, Molecular and Optical Physics Journal Issue: 24 Vol. 46; ISSN 0953-4075
• Country of Publication: United States
• Language: English