학술논문
Nuclear Charge Radii of the Nickel Isotopes $^{58-68,70}$Ni
Document Type
Working Paper
Author
Malbrunot-Ettenauer, S.; Kaufmann, S.; Bacca, S.; Barbieri, C.; Billowes, J.; Bissell, M. L.; Blaum, K.; Cheal, B.; Duguet, T.; Ruiz, R. F. Garcia; Gins, W.; Gorges, C.; Hagen, G.; Heylen, H.; Holt, J. D.; Jansen, G. R.; Kanellakopoulos, A.; Kortelainen, M.; Miyagi, T.; Navrátil, P.; Nazarewicz, W.; Neugart, R.; Neyens, G.; Nörtershäuser, W.; Novario, S. J.; Papenbrock, T.; Ratajczyk, T.; Reinhard, P. -G.; Rodríguez, L. V.; Sánchez, R.; Sailer, S.; Schwenk, A.; Simonis, J.; Somà, V.; Stroberg, S. R.; Wehner, L.; Wraith, C.; Xie, L.; Xu, Z. Y.; Yang, X. F.; Yordanov, D. T.
Source
Phys. Rev. Lett. 128, 022502 (2021)
Subject
Language
Abstract
Collinear laser spectroscopy is performed on the nickel isotopes $^{58-68,70}$Ni, using a time-resolved photon counting system. From the measured isotope shifts, nuclear charge radii $R_c$ are extracted and compared to theoretical results. Three ab initio approaches all employ, among others, the chiral interaction NNLO$_{\rm sat}$, which allows an assessment of their accuracy. We find agreement with experiment in differential radii $\delta \left\langle r_\mathrm{c}^2 \right\rangle$ for all employed ab initio methods and interactions, while the absolute radii are consistent with data only for NNLO$_{\rm sat}$. Within nuclear density functional theory, the Skyrme functional SV-min matches experiment more closely than the Fayans functional Fy($\Delta r$,HFB).