Published September 1, 1980
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Journal Article
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Experimental determination of the relativistic fine-structure splitting in pionic Ti and Fe atoms
Abstract
Using a high-resolution crystal spectrometer we have measured the relativistic angular-momentum splittings of the 5g-4f and 5f-4d transitions in pionic Ti and Fe atoms. The observed fine-structure splittings of 85.3±3.0 eV in π- Ti and 158.5±7.8 eV in π- Fe agree with the calculated splittings of 88.5 and 167.6 eV, respectively, arising from the Klein-Gordon equation and from small corrections due to vacuum polarization, strong interaction, and electron screening.
Additional Information
©1980 The American Physical Society Received 3 April 1980 We wish to thank Dr. Louis Rosen and his staff at LAMPF for their hospitality and cooperation. Professor Valentin Telegdi and Dr. Michael Nieto helped us with their clarifying comments on the relativistic equations. We would also like to thank Professor Paul Lee for enlightening discussions and Mr. Mark Manley for valuable assistance during the experiment. One of us (K.-C. Wang) has received partial support from the National Science Foundation under Grant No. PHY75-23206. E. Bovet wishes to acknowledge support from the Swiss National Foundation. This work was supported by the Department of Energy under Grants Nos. DE-AC-03-76-ER00063 and AT[11-1]-2197.Files
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