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Title: Radii of neutron drops probed via the neutron skin thickness of nuclei

Abstract

Multineutron systems are crucial to understanding the physics of neutron-rich nuclei and neutron stars. Neutron drops, neutrons confined in an external field, are investigated systematically in both nonrelativistic and relativistic density functional theories and with ab initio calculations. Here, we demonstrate a new strong linear correlation, which is universal in the realm of mean-field models, between the rms radii of neutron drops and the neutron skin thickness of 208 Pb and 48 Ca , i.e., the difference between the neutron and proton rms radii of a nucleus. This correlation can be used to deduce the radii of neutron drops from the measured neutron skin thickness in a model-independent way, and the radii obtained for neutron drops can provide a useful constraint for realistic three-neutron forces, due to its high quality. Furthermore, we present a new correlation between the slope L of the symmetry energy and the radii of neutron drops, and provide the first validation of such a correlation by using density-functional models and ab initio calculations. These newly established correlations, together with more precise measurements of the neutron skin thicknesses of 208 Pb and 48 Ca and/or accurate determinations of L , will have an enduring impact on themore » understanding of multineutron interactions, neutron-rich nuclei, neutron stars, etc.« less

Authors:
 [1];  [2]
  1. Argonne National Lab. (ANL), Argonne, IL (United States). Physics Division
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Theoretical Division
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Office of Science (SC). Nuclear Physics (NP) (SC-26); USDOE
OSTI Identifier:
1340920
Alternate Identifier(s):
OSTI ID: 1328574
Report Number(s):
LA-UR-16-22214
Journal ID: ISSN 2469-9985; PRVCAN; TRN: US1701547
Grant/Contract Number:  
AC52-06NA25396; AC02-06CH11357; AC02-05CH11231
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 94; Journal Issue: 4; Journal ID: ISSN 2469-9985
Publisher:
APS
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Atomic and Nuclear Physics

Citation Formats

Zhao, P. W., and Gandolfi, S. Radii of neutron drops probed via the neutron skin thickness of nuclei. United States: N. p., 2016. Web. doi:10.1103/PhysRevC.94.041302.
Zhao, P. W., & Gandolfi, S. Radii of neutron drops probed via the neutron skin thickness of nuclei. United States. https://doi.org/10.1103/PhysRevC.94.041302
Zhao, P. W., and Gandolfi, S. 2016. "Radii of neutron drops probed via the neutron skin thickness of nuclei". United States. https://doi.org/10.1103/PhysRevC.94.041302. https://www.osti.gov/servlets/purl/1340920.
@article{osti_1340920,
title = {Radii of neutron drops probed via the neutron skin thickness of nuclei},
author = {Zhao, P. W. and Gandolfi, S.},
abstractNote = {Multineutron systems are crucial to understanding the physics of neutron-rich nuclei and neutron stars. Neutron drops, neutrons confined in an external field, are investigated systematically in both nonrelativistic and relativistic density functional theories and with ab initio calculations. Here, we demonstrate a new strong linear correlation, which is universal in the realm of mean-field models, between the rms radii of neutron drops and the neutron skin thickness of 208 Pb and 48 Ca , i.e., the difference between the neutron and proton rms radii of a nucleus. This correlation can be used to deduce the radii of neutron drops from the measured neutron skin thickness in a model-independent way, and the radii obtained for neutron drops can provide a useful constraint for realistic three-neutron forces, due to its high quality. Furthermore, we present a new correlation between the slope L of the symmetry energy and the radii of neutron drops, and provide the first validation of such a correlation by using density-functional models and ab initio calculations. These newly established correlations, together with more precise measurements of the neutron skin thicknesses of 208 Pb and 48 Ca and/or accurate determinations of L , will have an enduring impact on the understanding of multineutron interactions, neutron-rich nuclei, neutron stars, etc.},
doi = {10.1103/PhysRevC.94.041302},
url = {https://www.osti.gov/biblio/1340920}, journal = {Physical Review C},
issn = {2469-9985},
number = 4,
volume = 94,
place = {United States},
year = {2016},
month = {10}
}

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Cited by: 1 work
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Works referencing / citing this record:

Strength of tensor forces from neutron drops in ab initio relativistic Brueckner-Hartree-Fock theory
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