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Trends in autoionization of Rydberg states converging to the 4s threshold in the Kr-Rb⁺-Sr²⁺ isoelectonic sequence: theory and experiment

Neogi, A. and Kennedy, Eugene T. and Mosnier, Jean-Paul and van Kampen, Paul and Costello, John T. and O’Sullivan, G. and Mansfield, M. and Demekhin, Ph. and Lagutin, B. and Sukhorukov, V. (2003) Trends in autoionization of Rydberg states converging to the 4s threshold in the Kr-Rb⁺-Sr²⁺ isoelectonic sequence: theory and experiment. Physical Review A, 67 (4). 042707-1. ISSN 1050-2947

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Abstract

We have measured the photoabsorption spectra of the Kr-like ions Rb+ and Sr2+ at photon energies corresponding to the excitation of 4s-np resonances using, the dual laser plasma photoabsorption technique. Dramatic changes in the line profiles, with increasing ionization and also proceeding along the Rydberg series of each ion, are observed and explained by the trends in 4s-transition amplitudes computed within a framework of configuration-interaction Pauli-Fock calculations. Total photoionization cross sections show very good agreement with relative absorption data extracted from the measured spectra.

Item Type:Article (Published)
Refereed:Yes
Subjects:Physical Sciences > Physics
DCU Faculties and Centres:Research Initiatives and Centres > National Centre for Plasma Science and Technology (NCPST)
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.67.042707
Copyright Information:© 2003 The American Physical Society
Use License:This item is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 License. View License
Funders:Higher Education Authority, Enterprise Ireland
ID Code:15607
Deposited On:05 Aug 2010 16:03 by DORAS Administrator. Last Modified 05 Aug 2010 16:03

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