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Precision muonic-atom measurements of nuclear quadrupole moments and the Sternheimer effect in rare-earth atoms

Journal Article · · Phys. Rev. Lett.; (United States)
The ground-state quadrupole moments of /sup 151/Eu, /sup 153/Eu, /sup 155/Gd, /sup 157/Gd, /sup 159/Tb, /sup 163/Dy, /sup 167/Er, /sup 177/Hf, /sup 179/Hf, /sup 191/Ir, and /sup 193/Ir were determined with an uncertainty of less than one percent by measuring the quadrupole hyperfine-splitting energies of muonic M x rays. The results are used to determine experimentally Sternheimer shielding factors for the 4f, 5d, and 6p electronic states of the respective atoms. The deduced shielding factors for the 5d electronic states were found to vary considerably among these elements, presumably as a result of configuration mixing.
Research Organization:
Department of Physics, Purdue University, West Lafayette, Indiana 47907
OSTI ID:
5454714
Journal Information:
Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 51:18; ISSN PRLTA
Country of Publication:
United States
Language:
English

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