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Trends in 4d-subshell photoabsorption along the iodine isonuclear sequence: I, I⁺, and I²⁺

O'Sullivan, G., McGuinness, C., Costello, John T. orcid logoORCID: 0000-0003-4677-9999, Kennedy, Eugene T. orcid logoORCID: 0000-0002-0710-5281 and Weinmann, B. (1996) Trends in 4d-subshell photoabsorption along the iodine isonuclear sequence: I, I⁺, and I²⁺. Physical Review A, 53 (5). pp. 3211-3226. ISSN 1050-2947

The 4d absorption spectra of I, I+, and I2+ have been observed in the 45–300-eV region using the dual laser-produced plasma technique. At lower energies each spectrum is dominated by intense 4d→5p transitions, which are identified with the aid of multiconfiguration Hartree-Fock calculations. The excited states decay by direct autoionization involving 5s or 5p electrons and rates for the different processes and resulting linewidths were calculated and compared, where possible, with experiment. In the case of neutral iodine 4d→6p transitions are also observed in the region close to the 2D5/2 threshold. The dominant feature in each spectrum, however, arises from 4d-f excitation, which evolves from a 4d-ɛf shape resonance in neutral iodine to a feature containing discrete 4d→nf transitions in I2+.
Item Type:Article (Published)
Subjects:Physical Sciences > Physics
DCU Faculties and Centres:DCU Faculties and Schools > Faculty of Science and Health > School of Physical Sciences
Publisher:The American Physical Society
Official URL:http://dx.doi.org/10.1103/PhysRevA.53.3211
Copyright Information:© 1996 The American Physical Society
Use License:This item is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 License. View License
ID Code:15616
Deposited On:05 Aug 2010 15:48 by DORAS Administrator . Last Modified 07 Oct 2021 11:49

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