The measurement of the quadrupole moment of 185-Re and 187-Re from the hyperfine structure of muonic X rays

Abstract

The hyperfine splitting of the 5g -> 4f transitions in muonic 185,187-Re has been measured using high resolution HPGe detectors and compared to state-of-the-art atomic theoretical predictions. The spectroscopic quadrupole moment has been extracted using modern fitting procedures and compared to the values available in literature obtained from muonic X rays of natural rhenium. The extracted values of the nuclear spectroscopic quadrupole moment are 2.07(5) barn and 1.94(5) barn, respectively for 185-Re and 187-Re. This work is part of a larger effort at the Paul Scherrer Institut towards the measurement of the nuclear charge radii of radioactive elements.

arXiv comment15 pages, 8 figures, 8 tables; accepted for publication in Phys. Rev. C

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• Collinear laser spectroscopy of highly charged ions produced with an electron beam ion source
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