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 Title: TWO-PHOTON IONIZATION STUDY OF THE LOW LYING STATES OF UN+ Author(s): VanGundy, Robert A. Contributor(s): Heaven, Michael; Persinger, Thomas D. Subject(s): Ions Abstract: The electronic structures of UN and UN$^{+}$ are of interest for the testing and development of relativistic quantum chemistry methods. The ground state UN was probed by Matthew and Morse$^{1}$, who found that the electronic configuration (5f$^{2}$7s) differed from that of the isoelectronic UO$^{+}$ cation (5f$^{3}$). In the present study we examine the ionization energy of UN and the low energy states of UN$^{+}$ by means of pulsed-field ionization zero kinetic energy photoelectron spectroscopy (PFI-ZEKE). Resonantly enhanced two photon ionization (R2PI) coupled with a time of flight mass spectrometer was used to confirm production of the UN molecule and locate suitable electronically excited states for subsequent access to UN$^{+}$ via high-n Rydberg states. The results will be compared to the predictions from ligand field theory and high-level ab ignition calculations. 1. D. J. Matthew and M. D. Morse, J. Chem. Phys. 138, 184303 (2013) Issue Date: 06/22/18 Publisher: International Symposium on Molecular Spectroscopy Citation Info: APS Genre: Conference Paper / Presentation Type: Text Language: English URI: http://hdl.handle.net/2142/100757 DOI: 10.15278/isms.2018.FE09 Other Identifier(s): FE09 Date Available in IDEALS: 2018-08-172018-12-12
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