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Title: Charge Radius of the Short-Lived Ni 68 and Correlation with the Dipole Polarizability

Abstract

We present the first laser spectroscopic measurement of the neutron-rich nucleus 68Ni at the N = 40 subshell closure and extract its nuclear charge radius. Since this is the only short-lived isotope for which the dipole polarizability $α$D has been measured, the combination of these observables provides a benchmark for nuclear structure theory. We compare them to novel coupled-cluster calculations based on different chiral two- and three-nucleon interactions, for which a strong correlation between the charge radius and dipole polarizability is observed, similar to the stable nucleus 48Ca. Three-particle–three-hole correlations in coupled-cluster theory substantially improve the description of the experimental data, which allows to constrain the neutron radius and neutron skin of 68Ni.

Authors:
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Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP); ISOLDE Collaboration; European Union’s Horizon 2020; German Research Foundation (DFG); German Federal Ministry of Education and Research (BMBF); Innovative and Novel Computational Impact on Theory and Experiment (INCITE); Science and Technology Facilities Council (STFC)
OSTI Identifier:
1607964
Alternate Identifier(s):
OSTI ID: 1633144
Grant/Contract Number:  
AC05-00OR22725; SC0018223; 654002; 05P18RDCIA; 05P18RDFN1; 05P19RDFN1; ST/ L005670/1; ST/L005794/1; ST/P004423/1; ST/ P004598/1
Resource Type:
Published Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Name: Physical Review Letters Journal Volume: 124 Journal Issue: 13; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

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., and Yordanov, D. T. Charge Radius of the Short-Lived Ni68 and Correlation with the Dipole Polarizability. United States: N. p., 2020. Web. https://doi.org/10.1103/PhysRevLett.124.132502.
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. Charge Radius of the Short-Lived Ni68 and Correlation with the Dipole Polarizability. United States. https://doi.org/10.1103/PhysRevLett.124.132502
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., and Yordanov, D. T. Wed . "Charge Radius of the Short-Lived Ni68 and Correlation with the Dipole Polarizability". United States. https://doi.org/10.1103/PhysRevLett.124.132502.
@article{osti_1607964,
title = {Charge Radius of the Short-Lived Ni68 and Correlation with the Dipole Polarizability},
author = {Kaufmann, S. and Simonis, J. and Bacca, S. and Billowes, J. and Bissell, M. L. and Blaum, K. and Cheal, B. and Ruiz, R. F. Garcia and Gins, W. and Gorges, C. and Hagen, G. and Heylen, H. and Kanellakopoulos, A. and Malbrunot-Ettenauer, S. and Miorelli, M. and Neugart, R. and Neyens, G. and Nörtershäuser, W. and Sánchez, R. and Sailer, S. and Schwenk, A. and Ratajczyk, T. and Rodríguez, L. V. and Wehner, L. and Wraith, C. and Xie, L. and Xu, Z. Y. and Yang, X. F. and Yordanov, D. T.},
abstractNote = {We present the first laser spectroscopic measurement of the neutron-rich nucleus 68Ni at the N = 40 subshell closure and extract its nuclear charge radius. Since this is the only short-lived isotope for which the dipole polarizability $α$D has been measured, the combination of these observables provides a benchmark for nuclear structure theory. We compare them to novel coupled-cluster calculations based on different chiral two- and three-nucleon interactions, for which a strong correlation between the charge radius and dipole polarizability is observed, similar to the stable nucleus 48Ca. Three-particle–three-hole correlations in coupled-cluster theory substantially improve the description of the experimental data, which allows to constrain the neutron radius and neutron skin of 68Ni.},
doi = {10.1103/PhysRevLett.124.132502},
journal = {Physical Review Letters},
number = 13,
volume = 124,
place = {United States},
year = {2020},
month = {4}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1103/PhysRevLett.124.132502

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Cited by: 1 work
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Figures / Tables:

FIG. 1 FIG. 1: Resonance spectra of the stable isotopes 58,60,61,62,64Ni and the radioactive 68Ni with their center frequency indicated with a vertical line. The count rate is normalized for each isotope, and the frequency is given relative to the center frequency of the reference isotope 60Ni.

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Works referenced in this record:

From Calcium to Cadmium: Testing the Pairing Functional through Charge Radii Measurements of Cd 100 130
journal, September 2018


Constraints on the symmetry energy and neutron skins from experiments and theory
journal, July 2012


Measurement of the Dipole Polarizability of the Unstable Neutron-Rich Nucleus Ni 68
journal, December 2013


Structure of the Lightest Tin Isotopes
journal, April 2018


Chiral effective field theory and nuclear forces
journal, June 2011


Complete Electric Dipole Response and the Neutron Skin in Pb 208
journal, August 2011


Resonance ionization laser ion sources for on-line isotope separators (invited)
journal, February 2014

  • Marsh, B. A.
  • Review of Scientific Instruments, Vol. 85, Issue 2
  • DOI: 10.1063/1.4858015

Exploring s d -shell nuclei from two- and three-nucleon interactions with realistic saturation properties
journal, January 2016


Neutron and weak-charge distributions of the 48Ca nucleus
journal, November 2015

  • Hagen, G.; Ekström, A.; Forssén, C.
  • Nature Physics, Vol. 12, Issue 2
  • DOI: 10.1038/nphys3529

GW170817: Measurements of Neutron Star Radii and Equation of State
journal, October 2018


Colloquium : Three-body forces: From cold atoms to nuclei
journal, January 2013

  • Hammer, Hans-Werner; Nogga, Andreas; Schwenk, Achim
  • Reviews of Modern Physics, Vol. 85, Issue 1
  • DOI: 10.1103/RevModPhys.85.197

Modern theory of nuclear forces
journal, December 2009


Improved nuclear matter calculations from chiral low-momentum interactions
journal, March 2011


Determination of the Equation of State of Dense Matter
journal, October 2002


Tests of atomic charge-exchange cells for collinear laser spectroscopy
journal, June 2012

  • Klose, A.; Minamisono, K.; Geppert, Ch.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 678
  • DOI: 10.1016/j.nima.2012.03.006

Giant and pigmy dipole resonances in He 4 , O 16 , 22 , and Ca 40 from chiral nucleon-nucleon interactions
journal, December 2014


Off-line commissioning of the ISOLDE cooler
journal, October 2008

  • Frånberg, H.; Delahaye, P.; Billowes, J.
  • Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 266, Issue 19-20
  • DOI: 10.1016/j.nimb.2008.05.097

Spins, moments and charge radii of barium isotopes in the range 122–146Ba determined by collinear fast-beam laser spectroscopy
journal, July 1983


Electric Dipole Polarizability of Ca 48 and Implications for the Neutron Skin
journal, June 2017


Nuclear electromagnetic dipole response with the self-consistent Green's function formalism
journal, May 2019


Saturation with chiral interactions and consequences for finite nuclei
journal, July 2017


Electric dipole polarizability from first principles calculations
journal, September 2016


Computing the dipole polarizability of Ca 48 with increased precision
journal, July 2018


Neutron charge radius determined from the energy dependence of the neutron transmission of liquid 208 Pb and 209 Bi
journal, October 1997


Population distribution subsequent to charge exchange of 29.85 keV Ni+ on sodium vapor
journal, November 2015

  • Ryder, C. A.; Minamisono, K.; Asberry, H. B.
  • Spectrochimica Acta Part B: Atomic Spectroscopy, Vol. 113
  • DOI: 10.1016/j.sab.2015.08.004

Accurate nuclear radii and binding energies from a chiral interaction
journal, May 2015


Dipole polarizability of Sn 120 and nuclear energy density functionals
journal, September 2015


First principles electromagnetic responses in medium-mass nuclei: Recent progress from coupled-cluster theory
journal, December 2019

  • Simonis, Johannes; Bacca, Sonia; Hagen, Gaute
  • The European Physical Journal A, Vol. 55, Issue 12
  • DOI: 10.1140/epja/i2019-12825-0

First Principles Description of the Giant Dipole Resonance in O 16
journal, September 2013


Neutron skin thickness from the measured electric dipole polarizability in Ni 68 , Sn 120 , and Pb 208
journal, December 2015


Neutron Skin of Pb 208 , Nuclear Symmetry Energy, and the Parity Radius Experiment
journal, June 2011


Nuclear sizes and the isotope shift
journal, December 1997


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