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 »
- Authors:
-
- Argonne National Lab. (ANL), Argonne, IL (United States). Physics Division
- 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:
- 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. Mon .
"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},
journal = {Physical Review C},
number = 4,
volume = 94,
place = {United States},
year = {Mon Oct 10 00:00:00 EDT 2016},
month = {Mon Oct 10 00:00:00 EDT 2016}
}
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