Charge Radius of Neutron-Deficient 54Ni and Symmetry Energy Constraints Using the Difference in Mirror Pair Charge Radii

被引：52

作者：

Pineda, Skyy, V ^{[1
,2
]}

Konig, Kristian ^{[1
]}

Rossi, Dominic M. ^{[3
,4
]}

Brown, B. Alex ^{[1
,5
]}

Incorvati, Anthony ^{[1
,5
]}

Lantis, Jeremy ^{[1
,2
]}

Minamisono, Kei ^{[1
,5
]}

Noertershaeuser, Wilfried ^{[3
]}

Piekarewicz, Jorge ^{[6
]}

Powel, Robert ^{[1
,5
]}

Sommer, Felix ^{[3
]}

机构：

[1] Michigan State Univ, Natl Superconducting Cyclotron Lab, E Lansing, MI 48824 USA

[2] Michigan State Univ, Dept Chem, E Lansing, MI 48824 USA

[3] Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany

[4] GSI Helmholtzzentrum Schwerionenforsch MbH, Planckstr 1, D-64291 Darmstadt, Germany

[5] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA

[6] Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA

来源：

PHYSICAL REVIEW LETTERS | 2021年 / 127卷 / 18期

基金：

美国国家科学基金会;

关键词：

COLLINEAR LASER SPECTROSCOPY; SHELL-MODEL; NUCLEI; EXCHANGE; EQUATION;

D O I：

10.1103/PhysRevLett.127.182503

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The nuclear root-mean-square charge radius of Ni-54 was determined with collinear laser spectroscopy to be R(Ni-54) =3.737 (3) fm. In conjunction with the known radius of the mirror nucleus Fe-54, the difference of the charge radii was extracted as Delta R-ch = 0.049 (4) fm. Based on the correlation between Delta R-ch and the slope of the symmetry energy at nuclear saturation density (L), we deduced 21 = L = 88 MeV. The present result is consistent with the L from the binary neutron star merger GW170817, favoring a soft neutron matter EOS, and barely consistent with the PREX-2 result within 1 sigma error bands. Our result indicates the neutron-skin thickness of Ca-48 as 0.15-0.21 fm.

引用

页数：7

共 27 条

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[3] Constraining nuclear symmetry energy with the charge radii of mirror-pair nuclei
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[7] Correlation between the charge radii difference in mirror partner nuclei and the symmetry energy slope
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[8] Correlation between the difference of charge radii in mirror nuclei and the slope parameter of the symmetry energy
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[9] Isospin symmetry breaking in the charge radius difference of mirror nuclei
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[10] Charge radii of neutron-deficient 36K and 37K
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