Abstract
By means of new experimental techniques heavy ions with a few electrons can now be studied with improved accuracy. In combination with new computational schemes such data can be used for testing QED at strong fields. In this paper we discuss in particular recent QED calculations on lithium-like uranium and on some helium-like ions and compare them with corresponding experimental results. The agreement between theory and experiments is generally very good. The helium-like ions are of particular interest in this respect. Here, it is possible to determine the two-electron QED contribution independently of the much larger one-electron part. Only a moderate improvement in the experimental accuracy is needed in order to make it possible, for the first time, to test QED effects at strong fields beyond the lowest-order Lamb shift.
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References
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Lindgren, I., Persson, H., Salomonson, S., Sunnergren, P. (1995). Few-Body Problems in Atomic Physics. In: Guardiola, R. (eds) Few-Body Problems in Physics ’95. Few-Body Systems, vol 8. Springer, Vienna. https://doi.org/10.1007/978-3-7091-9427-0_8
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DOI: https://doi.org/10.1007/978-3-7091-9427-0_8
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