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Title: Proton superfluidity and charge radii in proton-rich calcium isotopes

Abstract

One of the most important global properties of the atomic nucleus is its size. Experimentally determined nuclear charge radii carry unique information on the nuclear force and complex dynamics of protons and neutrons moving inside the nucleus. The intricate behaviour of charge radii along the chain of Ca isotopes, including the unexpectedly large charge radius of neutron-rich 52Ca, poses a daunting challenge for nuclear theory. Here we present the measurements of the charge radii of proton-rich isotopes 36,37,38Ca, whose properties are impacted by the interplay between nuclear superfluidity and weak binding. Calculations carried out within nuclear density functional theory show that the combination of a novel interaction and a state-of-the-art theoretical method can successfully explain the behaviour of charge radii from the lightest to the heaviest Ca isotopes. Through this model, we show how the new data on 36,37,38Ca elucidate the nature of nucleonic pairing in weakly bound proton-rich isotopes.

Authors:
 [1]; ORCiD logo [1]; ORCiD logo [2];  [3];  [2];  [4]; ORCiD logo [5];  [6];  [7];  [8]; ORCiD logo [6];  [2];  [9];  [6];  [6];  [3];  [10];  [3]
  1. Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab.; Michigan State Univ., East Lansing, MI (United States). Dept. of Physics and Astronomy
  2. Augustana Univ., Sioux Falls, SD (United States). Dept. of Chemistry
  3. Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab.
  4. Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab.; Michigan State Univ., East Lansing, MI (United States). Dept. of Chemistry
  5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Physics Div.
  6. Technische Univ. Darmstadt (Germany). Inst. fur Kernphysik
  7. Michigan State Univ., East Lansing, MI (United States). Facility for Rare Isotope Beams; Michigan State Univ., East Lansing, MI (United States). Dept. of Chemistry
  8. Michigan State Univ., East Lansing, MI (United States). Facility for Rare Isotope Beams; Michigan State Univ., East Lansing, MI (United States). Dept. of Physics and Astronomy
  9. Univ. Erlangen (Germany). Inst. fuer Theoretische Physik
  10. TRIUMF, Vancouver, BC (Canada)
Publication Date:
Research Org.:
Michigan State Univ., East Lansing, MI (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1506090
DOE Contract Number:  
NA0002924
Resource Type:
Other
Journal Name:
Nature Physics
Additional Journal Information:
Journal Volume: 15; Journal Issue: 5; Journal ID: ISSN 1745-2473
Publisher:
Nature Publishing Group (NPG)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Miller, A. J., Minamisono, K., Klose, A., Garand, D., Kujawa, C., Lantis, J. D., Liu, Y., Maaß, B., Mantica, P. F., Nazarewicz, W., Nörtershäuser, W., Pineda, S. V., Reinhard, P. -G., Rossi, D. M., Sommer, F., Sumithrarachchi, C., Teigelhöfer, A., and Watkins, J. Proton superfluidity and charge radii in proton-rich calcium isotopes. United States: N. p., 2019. Web. doi:10.1038/s41567-019-0416-9.
Miller, A. J., Minamisono, K., Klose, A., Garand, D., Kujawa, C., Lantis, J. D., Liu, Y., Maaß, B., Mantica, P. F., Nazarewicz, W., Nörtershäuser, W., Pineda, S. V., Reinhard, P. -G., Rossi, D. M., Sommer, F., Sumithrarachchi, C., Teigelhöfer, A., & Watkins, J. Proton superfluidity and charge radii in proton-rich calcium isotopes. United States. doi:10.1038/s41567-019-0416-9.
Miller, A. J., Minamisono, K., Klose, A., Garand, D., Kujawa, C., Lantis, J. D., Liu, Y., Maaß, B., Mantica, P. F., Nazarewicz, W., Nörtershäuser, W., Pineda, S. V., Reinhard, P. -G., Rossi, D. M., Sommer, F., Sumithrarachchi, C., Teigelhöfer, A., and Watkins, J. Mon . "Proton superfluidity and charge radii in proton-rich calcium isotopes". United States. doi:10.1038/s41567-019-0416-9. https://www.osti.gov/servlets/purl/1506090.
@article{osti_1506090,
title = {Proton superfluidity and charge radii in proton-rich calcium isotopes},
author = {Miller, A. J. and Minamisono, K. and Klose, A. and Garand, D. and Kujawa, C. and Lantis, J. D. and Liu, Y. and Maaß, B. and Mantica, P. F. and Nazarewicz, W. and Nörtershäuser, W. and Pineda, S. V. and Reinhard, P. -G. and Rossi, D. M. and Sommer, F. and Sumithrarachchi, C. and Teigelhöfer, A. and Watkins, J.},
abstractNote = {One of the most important global properties of the atomic nucleus is its size. Experimentally determined nuclear charge radii carry unique information on the nuclear force and complex dynamics of protons and neutrons moving inside the nucleus. The intricate behaviour of charge radii along the chain of Ca isotopes, including the unexpectedly large charge radius of neutron-rich 52Ca, poses a daunting challenge for nuclear theory. Here we present the measurements of the charge radii of proton-rich isotopes 36,37,38Ca, whose properties are impacted by the interplay between nuclear superfluidity and weak binding. Calculations carried out within nuclear density functional theory show that the combination of a novel interaction and a state-of-the-art theoretical method can successfully explain the behaviour of charge radii from the lightest to the heaviest Ca isotopes. Through this model, we show how the new data on 36,37,38Ca elucidate the nature of nucleonic pairing in weakly bound proton-rich isotopes.},
doi = {10.1038/s41567-019-0416-9},
journal = {Nature Physics},
issn = {1745-2473},
number = 5,
volume = 15,
place = {United States},
year = {2019},
month = {2}
}

Works referenced in this record:

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


Radioactive decays at limits of nuclear stability
journal, April 2012


On-Line Ion Cooling and Bunching for Collinear Laser Spectroscopy
journal, February 2002


Pairing Nambu-Goldstone Modes within Nuclear Density Functional Theory
journal, April 2016


Shell model description of isotope shifts in calcium
journal, December 2001


Moments and mean square charge radii of short-lived argon isotopes
journal, September 1996


Pairing interaction and self-consistent densities in neutron-rich nuclei
journal, October 2001


Hartree-Fock-Bogolyubov description of nuclei near the neutron-drip line
journal, June 1984


Towards a universal nuclear density functional
journal, August 1998

  • Fayans, S. A.
  • Journal of Experimental and Theoretical Physics Letters, Vol. 68, Issue 3
  • DOI: 10.1134/1.567841

Development and applications of the IGISOL technique
journal, October 2001


Self-consistent theory of finite Fermi systems and radii of nuclei
journal, September 2011


Commissioning the A1900 projectile fragment separator
journal, May 2003

  • Morrissey, D. J.; Sherrill, B. M.; Steiner, M.
  • Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 204
  • DOI: 10.1016/S0168-583X(02)01895-5

RFQ beam cooler and buncher for collinear laser spectroscopy of rare isotopes
journal, September 2017

  • Barquest, B. R.; Bollen, G.; Mantica, P. F.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 866
  • DOI: 10.1016/j.nima.2017.05.036

Commissioning of the collinear laser spectroscopy system in the BECOLA facility at NSCL
journal, May 2013

  • Minamisono, K.; Mantica, P. F.; Klose, A.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 709
  • DOI: 10.1016/j.nima.2013.01.038

Collinear laser spectroscopy at ISOLDE: new methods and highlights
journal, April 2017

  • Neugart, R.; Billowes, J.; Bissell, M. L.
  • Journal of Physics G: Nuclear and Particle Physics, Vol. 44, Issue 6
  • DOI: 10.1088/1361-6471/aa6642

Self-consistent mean-field models for nuclear structure
journal, January 2003

  • Bender, Michael; Heenen, Paul-Henri; Reinhard, Paul-Gerhard
  • Reviews of Modern Physics, Vol. 75, Issue 1
  • DOI: 10.1103/RevModPhys.75.121

One-quasiparticle states in the nuclear energy density functional theory
journal, February 2010


Structure and reactions of quantum halos
journal, February 2004


Charge Radii of Neutron Deficient Fe 52 , 53 Produced by Projectile Fragmentation
journal, December 2016


Coulomb energy differences in mirror nuclei revisited
journal, June 2001


Extraction of thermalized projectile fragments from a large volume gas cell
journal, November 2014

  • Cooper, K.; Sumithrarachchi, C. S.; Morrissey, D. J.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 763
  • DOI: 10.1016/j.nima.2014.06.075

Laser spectroscopy for nuclear structure physics
journal, January 2016


Variations on a theme by Skyrme: A systematic study of adjustments of model parameters
journal, March 2009


Toward a global description of nuclear charge radii: Exploring the Fayans energy density functional
journal, June 2017


Nuclear isotope shifts within the local energy-density functional approach
journal, August 2000


Charge radii of neutron-deficient K 36 and K 37
journal, July 2015


Beta decay of the new isotopes K 52 , Ca 52 , and Sc 52 ; a test of the shell model far from stability
journal, June 1985


Description of superheavy nuclei on the basis of a modified version of the DF3 energy functional
journal, October 2010


A stabilized pairing functional
journal, July 2008


Pairing in nuclear systems: from neutron stars to finite nuclei
journal, April 2003


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

A field programmable gate array-based time-resolved scaler for collinear laser spectroscopy with bunched radioactive potassium beams
journal, September 2014

  • Rossi, D. M.; Minamisono, K.; Barquest, B. R.
  • Review of Scientific Instruments, Vol. 85, Issue 9
  • DOI: 10.1063/1.4895461

Possible Analogy between the Excitation Spectra of Nuclei and Those of the Superconducting Metallic State
journal, May 1958


Study of the β decays of 37Ca and 36Ca
journal, July 1997


Mean-field description of ground-state properties of drip-line nuclei: Pairing and continuum effects
journal, June 1996


Unexpectedly large charge radii of neutron-rich calcium isotopes
journal, February 2016

  • Garcia Ruiz, R. F.; Bissell, M. L.; Blaum, K.
  • Nature Physics, Vol. 12, Issue 6
  • DOI: 10.1038/nphys3645

Laser Spectroscopy of Cooled Zirconium Fission Fragments
journal, August 2002


A simple asymmetric lineshape for fitting infrared absorption spectra
journal, May 2008


Mirror Charge Radii and the Neutron Equation of State
journal, September 2017


An HFB scheme in natural orbitals
journal, September 1997

  • Reinhard, P. -G.; Bender, M.; Rutz, K.
  • Zeitschrift für Physik A Hadrons and Nuclei, Vol. 358, Issue 3
  • DOI: 10.1007/s002180050328

The mean square nuclear charge radius of
journal, October 1996

  • Vermeeren, Ludo; Lievens, Peter; Silverans, Roger E.
  • Journal of Physics G: Nuclear and Particle Physics, Vol. 22, Issue 10
  • DOI: 10.1088/0954-3899/22/10/014

Pairing correlations. I. Description of odd nuclei in mean-field theories
journal, December 2001