Electromagnetic properties of indium isotopes illuminate the doubly magic character of 100Sn

被引：2

作者：

Karthein, J. ^{[1
]}

Ricketts, C. M. ^{[2
,3
]}

Ruiz, R. F. Garcia ^{[1
,2
,3
,4
]}

Billowes, J. ^{[2
,3
]}

Binnersley, C. L. ^{[2
,3
]}

Cocolios, T. E. ^{[5
]}

Dobaczewski, J. ^{[6
,7
]}

Farooq-Smith, G. J. ^{[5
,21
]}

Flanagan, K. T. ^{[2
,3
]}

Georgiev, G. ^{[8
]}

Gins, W. ^{[5
]}

de Groote, R. P. ^{[5
]}

Gustafsson, F. P. ^{[5
]}

Holt, J. D. ^{[9
,10
]}

Kanellakopoulos, A. ^{[5
]}

Koszorus, A. ^{[5
]}

Leimbach, D. ^{[4
,11
]}

Lynch, K. M. ^{[2
,3
,4
]}

Miyagi, T. ^{[12
,13
,14
,22
]}

Nazarewicz, W. ^{[15
,16
]}

Neyens, G. ^{[5
]}

Reinhard, P. -g. ^{[17
]}

Sahoo, B. K. ^{[18
]}

Vernon, A. R. ^{[2
,3
]}

Wilkins, S. G. ^{[4
,23
]}

Yang, X. F. ^{[19
,20
]}

Yordanov, D. T. ^{[4
,8
]}

机构：

[1] MIT, Cambridge, MA 02139 USA

[2] Univ Manchester, Photon Sci Inst, Manchester, England

[3] Univ Manchester, Photon Sci Inst, Manchester, England

[4] CERN, Geneva, Switzerland

[5] Katholieke Univ Leuven, Inst Kern & Stralingsfys, Leuven, Belgium

[6] Univ York, Sch Phys Engn & Technol, York, England

[7] Univ Warsaw, Inst Theoret Phys, Fac Phys, Warsaw, Poland

[8] Univ Paris Saclay, IJCLab, CNRS IN2P3, Orsay, France

[9] TRIUMF, Vancouver, BC, Canada

[10] McGill Univ, Dept Phys, Montreal, PQ, Canada

[11] Univ Gothenburg, Dept Phys, Gothenburg, Sweden

[12] Tech Univ Darmstadt, Dept Phys, Darmstadt, Germany

[13] GSI Helmholtzzentrum Schwerionenforschung GmbH, ExtreMe Matter Inst EMMI, Darmstadt, Germany

[14] Max Planck Inst Kernphys, Heidelberg, Germany

[15] Michigan State Univ, Facil Rare Isotope Beams, E Lansing, MI USA

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

[17] Friedrich Alexander Univ, Inst Theoret Phys, Erlangen, Germany

[18] Phys Res Lab, Atom Mol & Opt Phys Div, Ahmadabad, India

[19] Peking Univ, Sch Phys, Beijing, Peoples R China

[20] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing, Peoples R China

[21] Western Gen Hosp, Edinburgh Canc Ctr, Dept Oncol Phys, Edinburgh, Scotland

[22] Univ Tsukuba, Ctr Computat Sci, Ibaraki, Japan

[23] MIT, Cambridge, MA USA

来源：

NATURE PHYSICS | 2024年 / 20卷 / 11期

基金：

国家重点研发计划; 中国国家自然科学基金; 欧洲研究理事会; 英国科学技术设施理事会; 比利时弗兰德研究基金会; 加拿大自然科学与工程研究理事会;

关键词：

CHARGE RADII; LIFETIME MEASUREMENTS; COULOMB-EXCITATION; NUCLEAR-STRUCTURE; RESONANCE; MOMENTS; NUMBER; STATES;

D O I：

10.1038/s41567-024-02612-y

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Understanding the nuclear properties in the vicinity of Sn-100, which has been suggested to be the heaviest doubly magic nucleus with proton number Z equal to neutron number N, has been a long-standing challenge for experimental and theoretical nuclear physics. In particular, contradictory experimental evidence exists regarding the role of nuclear collectivity in this region of the nuclear chart. Here, we provide further evidence for the doubly magic character of Sn-100 by measuring the ground-state electromagnetic moments and nuclear charge radii of indium (Z = 49) isotopes as N approaches 50 from above using precision laser spectroscopy. Our results span almost the complete range between the two major closed neutron shells at N = 50 and N = 82 and reveal parabolic trends as a function of the neutron number, with a clear reduction towards these two closed neutron shells. A detailed comparison between our experimental results and numerical results from two complementary nuclear many-body frameworks (density functional theory and ab initio methods) exposes deficiencies in nuclear models and establishes a benchmark for future theoretical developments.

引用

页码：1719 / 1725

页数：20

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