High Resolution Recombination Measurements of Stored Ions
- Department of Atomic Physics, Stockholm University, Alba Nova (SCFAB), SE106 91 Stockholm (Sweden)
- Department of Physics and Applied Physics, University of Strathclyde, G4 0NG Glasglow (United Kingdom)
The accuracy obtained in electron-ion recombination experiments at storage rings has reached a level which allows strenuous tests of theoretical models and the ability to derive accurate, and useful, information for applications such as plasma modeling and diagnostics. Here we present two such recombination experiments performed at the heavy ion storage ring CRYRING. First, we investigated the possibility to derive a temperature dependent plasma rate coefficient for Na-like Ni, which has been observed in emission lines from active solar regions and laboratory plasmas. Second, we determined the 2s1/2-2p1/2 energy splitting in Li-like Kr. Such a highly charged ion exhibits large QED contributions ({approx}1.5 eV) which are difficult to represent in theoretically calculations. The experimental value for the splitting was determined to within 8 meV while the theoretically determined value is only accurate to within 19 meV.
- OSTI ID:
- 20632557
- Journal Information:
- AIP Conference Proceedings, Vol. 680, Issue 1; Conference: 17. international conference on the application of accelerators in research and industry, Denton, TX (United States), 12-16 Nov 2002; Other Information: DOI: 10.1063/1.1619687; (c) 2003 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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