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Title: Charge radii of exotic neon and magnesium isotopes

Abstract

We compute the charge radii and ground-state energies of even-mass neon and magnesium isotopes from neutron number N=8 to the dripline. Our calculations are based on nucleon-nucleon and three-nucleon potentials from chiral effective field theory that include Δ isobars. These potentials yield an accurate saturation point and symmetry energy of nuclear matter. We use the coupled-cluster method and start from an axially symmetric reference state. Binding energies and two-neutron separation energies largely agree with data, and the dripline in neon is accurate. The computed charge radii are accurate for many isotopes where data exist. Finer details, such as isotope shifts, however, are not accurately reproduced. These chiral potentials indicate a subshell closure at N=14 for the radii (but not for two-neutron separation energies) and a decrease in charge radii at N=8 (observed in neon and predicted for magnesium). They yield a continued increase of charge radii as neutrons are added beyond N=14 yet underestimate the large increase at N=20 in magnesium.

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [1]
  1. Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP)
OSTI Identifier:
1719118
Alternate Identifier(s):
OSTI ID: 1731053
Grant/Contract Number:  
FG02-96ER40963; AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 102; Journal Issue: 5; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Charge distributions; Nuclear binding; Nuclear charge distribution; Nuclear forces; Nuclear structure & decays; 20 ≤ A ≤ 38

Citation Formats

Novario, Samuel J., Hagen, Gaute, Jansen, Gustav R., and Papenbrock, T.. Charge radii of exotic neon and magnesium isotopes. United States: N. p., 2020. Web. https://doi.org/10.1103/physrevc.102.051303.
Novario, Samuel J., Hagen, Gaute, Jansen, Gustav R., & Papenbrock, T.. Charge radii of exotic neon and magnesium isotopes. United States. https://doi.org/10.1103/physrevc.102.051303
Novario, Samuel J., Hagen, Gaute, Jansen, Gustav R., and Papenbrock, T.. Fri . "Charge radii of exotic neon and magnesium isotopes". United States. https://doi.org/10.1103/physrevc.102.051303. https://www.osti.gov/servlets/purl/1719118.
@article{osti_1719118,
title = {Charge radii of exotic neon and magnesium isotopes},
author = {Novario, Samuel J. and Hagen, Gaute and Jansen, Gustav R. and Papenbrock, T.},
abstractNote = {We compute the charge radii and ground-state energies of even-mass neon and magnesium isotopes from neutron number N=8 to the dripline. Our calculations are based on nucleon-nucleon and three-nucleon potentials from chiral effective field theory that include Δ isobars. These potentials yield an accurate saturation point and symmetry energy of nuclear matter. We use the coupled-cluster method and start from an axially symmetric reference state. Binding energies and two-neutron separation energies largely agree with data, and the dripline in neon is accurate. The computed charge radii are accurate for many isotopes where data exist. Finer details, such as isotope shifts, however, are not accurately reproduced. These chiral potentials indicate a subshell closure at N=14 for the radii (but not for two-neutron separation energies) and a decrease in charge radii at N=8 (observed in neon and predicted for magnesium). They yield a continued increase of charge radii as neutrons are added beyond N=14 yet underestimate the large increase at N=20 in magnesium.},
doi = {10.1103/physrevc.102.051303},
journal = {Physical Review C},
number = 5,
volume = 102,
place = {United States},
year = {2020},
month = {11}
}

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