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Absolute photoionization cross section measurements of the Kr I-isoelectronic sequence

Kilbane, Deirdre and Folkmann, F. and Banahan, Caroline and Scully, S. and Kjeldsen, H. and van Kampen, Paul and Mansfield, M.W.D. and Costello, John T. and West, J.B. (2007) Absolute photoionization cross section measurements of the Kr I-isoelectronic sequence. Physical Review A, 75 (3). ISSN 1050-2947

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Photoionization spectra have been recorded in the 4s, 4p and 3d resonance regions for the Kr Iisoelectronic sequence using both the dual laser produced plasma technique (at DCU) to produce photoabsorption spectra, and the merged ion beam and synchrotron radiation technique (at ASTRID) to measure absolute photoionization cross sections. Profile parameters are compared for the 4s − np resonances of Rb+ and Sr2+. Many new 4p " ns, md transitions are identified with the aid of Hartree-Fock calculations, and consistent quantum defects are observed for the various ns and md Rydberg series. Absolute single and double photoionization cross sections recorded in the 3d region for Rb+ and Sr2+ ions show preferential decay via double photoionization. This is only the second report where both the DLP technique and the merged beam technique have been used simultaneously to record photoionization spectra, and the advantages of both techniques (i.e. better resolution in the case of DLP and values for absolute photoionization cross sections in the case of the merged beam technique) are highlighted.

Item Type:Article (Published)
Subjects:Physical Sciences > Laser plasmas
Physical Sciences > Physics
Physical Sciences > Photonics
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:
Copyright Information:©2007 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:99
Deposited On:08 Nov 2007 by DORAS Administrator. Last Modified 30 Jan 2009 14:40

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