Charge radius of the short-lived $^{68}$Ni and correlation with the dipole polarizability

13 Mar 2020 • Kaufmann S. • Simonis J. • Bacca S. • Billowes J. • Bissell M. L. • Blaum K. • Cheal B. • Ruiz R. F. Garcia • Gins W. • Gorges C. • Hagen G. • Heylen H. • Kanellakopoulos A. • Malbrunot-Ettenauer S. • Miorelli M. • Neugart R. • Neyens G. • Nörtershäuser W. • Sánchez R. • Sailer S. • Schwenk A. • Ratajczyk T. • Rodríguez L. V. • Wehner L. • Wraith C. • Xie L. • Xu Z. Y. • Yang X. F. • Yordanov D. T.

We present the first laser spectroscopic measurement of the neutron-rich nucleus $^{68}$Ni at the \mbox{$N=40$} subshell closure and extract its nuclear charge radius. Since this is the only short-lived isotope for which the dipole polarizability $\alpha_{\rm D}$ has been measured, the combination of these observables provides a benchmark for nuclear structure theory... (read more)

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Charge radius of the short-lived $^{68}$Ni and correlation with the dipole polarizability

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