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Photoionization of the Ne-like Si4+ ion in ground and metastable states in the 110–184-eV photon energy range

Bizau, J.-M. and Mosnier, Jean-Paul and Kennedy, Eugene T. and Cubaynes, D. and Wuilleumier, F. and Blancard, C. and Champeaux, J.-P. and Folkmann, F. (2009) Photoionization of the Ne-like Si4+ ion in ground and metastable states in the 110–184-eV photon energy range. Physical Review A, 79 (3). 033407-1-033407-6. ISSN 1050-2947

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We present measurements of the absolute photoionization cross section of the neonlike Si4+ ion over the 110–184 eV photon energy range. The measurements were performed using two independent merged-beam setups at the super-ACO and ASTRID synchrotron-radiation facilities, respectively. Signals produced in the photoionization of the 2p subshell of the Si4+ ion both from the 2p6 1S0 ground state and the 2p53s 3P0,2 metastable levels were observed. Calculations of the 2p photoionization cross sections were carried out using a multi-configuration Dirac-Fock code. They give results in good agreement with the measured spectra. Comparison with other available theoretical results is also presented.

Item Type:Article (Published)
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:
Copyright Information:© 2009 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:15602
Deposited On:05 Aug 2010 14:33 by DORAS Administrator. Last Modified 05 Aug 2010 14:33

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