Nd${}^{+}$ isotope shift measurements in a cryogenically-cooled neutral plasma

Abstract

We report measurements of the isotope shifts of two transitions ($4f^{4}6s\to [25044.7{]}_{7/2}^{\circ }$ and $4f^{4}6s\to [25138.6{]}_{7/2}^{\circ }$) in neodymium ions (Nd${}^{+}$) with hundredfold improved accuracy, using laser spectroscopy of a cryogenically-cooled neutral plasma. The isotope shifts were measured across a set of five spin-zero isotopes that spans a nuclear shape transition. We discuss the prospects for further improvements to the accuracy of Nd${}^{+}$ isotope shifts using optical clock transitions, which could enable higher precision tests of King plot linearity for new physics searches.

arXiv comment5 pages, 5 figures, 2 tables

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Cited by in corpus (1)

• Quantum Sensing Using Atomic Clocks for Nuclear and Particle Physics