Smooth trends in fermium charge radii and the impact of shell effects

被引：1

作者：

Warbinek, Jessica ^{[1
,2
,3
,28
]}

Rickert, Elisabeth ^{[1
,2
,3
]}

Raeder, Sebastian ^{[1
,3
]}

Albrecht-Schonzart, Thomas ^{[4
]}

Andelic, Brankica ^{[1
,3
,5
]}

Auler, Julian ^{[2
]}

Bally, Benjamin ^{[6
]}

Bender, Michael ^{[7
]}

Berndt, Sebastian ^{[2
]}

Block, Michael ^{[1
,2
,3
]}

Brizard, Alexandre ^{[8
]}

Chauveau, Pierre ^{[1
,3
]}

Cheal, Bradley ^{[9
]}

Chhetri, Premaditya ^{[1
,3
,10
]}

Claessens, Arno ^{[10
]}

de Roubin, Antoine ^{[10
]}

Devlin, Charlie ^{[9
]}

Dorrer, Holger ^{[2
]}

Duellmann, Christoph E. ^{[1
,2
,3
]}

Ezold, Julie ^{[11
]}

Ferrer, Rafael ^{[10
]}

Gadelshin, Vadim ^{[12
]}

Gaiser, Alyssa ^{[13
,14
]}

Giacoppo, Francesca ^{[1
,3
]}

Goriely, Stephane ^{[15
]}

Gutierrez, Manuel J. ^{[1
,3
]}

Harvey, Ashley ^{[11
]}

Hasse, Raphael ^{[12
]}

Heinke, Reinhard ^{[12
]}

Hessberger, Fritz-Peter ^{[1
]}

Hilaire, Stephane ^{[16
,17
]}

Kaja, Magdalena ^{[12
]}

Kaleja, Oliver ^{[1
,18
]}

Kieck, Tom ^{[1
,2
,3
]}

Kim, Eunkang ^{[2
]}

Kneip, Nina ^{[12
]}

Koester, Ulli ^{[19
]}

Kraemer, Sandro ^{[10
]}

Laatiaoui, Mustapha ^{[2
]}

Lantis, Jeremy ^{[2
]}

Lecesne, Nathalie ^{[8
]}

Loria Basto, Andrea Tzeitel ^{[2
,3
]}

Mistry, Andrew Kishor ^{[1
,20
,21
]}

Mokry, Christoph ^{[2
,3
]}

Moore, Iain ^{[22
]}

Murboeck, Tobias ^{[1
,3
]}

Muenzberg, Danny ^{[1
,2
,3
]}

Nazarewicz, Witold ^{[13
,23
]}

Niemeyer, Thorben ^{[12
]}

Nothhelfer, Steven ^{[1
,2
,3
]}

机构：

[1] GSI Helmholtzzentrum Schwerionenforsch, Darmstadt, Germany

[2] Johannes Gutenberg Univ Mainz, Dept Chem, Mainz, Germany

[3] Helmholtz Inst Mainz, Mainz, Germany

[4] Colorado Sch Mines, Nucl Sci & Engn Ctr, Dept Chem, Golden, CO USA

[5] Univ Groningen, Groningen, Netherlands

[6] Univ Paris Saclay, ESNT, IRFU, CEA, Gif Sur Yvette, France

[7] Univ Claude Bernard Lyon 1, CNRS, IN2P3, IP2I,UMR 5822, Villeurbanne, France

[8] GANIL, Caen, France

[9] Univ Liverpool, Liverpool, Merseyside, England

[10] Katholieke Univ Leuven, Dept Phys & Astron, B-3001 Leuven, Belgium

[11] Oak Ridge Natl Lab, Oak Ridge, TN USA

[12] Johannes Gutenberg Univ Mainz, Inst Phys, Mainz, Germany

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

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

[15] Univ Libre Bruxelles, Brussels, Belgium

[16] CEA, DAM, DIF, Arpajon, France

[17] Univ Paris Saclay, CEA, LMCE, Bruyeres Le Chatel, France

[18] Univ Greifswald, Greifswald, Germany

[19] Inst Laue Langevin, Grenoble, France

[20] GSI Helmholtzzentrum Schwerionenforsch, Helmholtz Forschungsakad Hessen FAIR HFHF, D-64291 Darmstadt, Germany

[21] Tech Univ Darmstadt, Darmstadt, Germany

[22] Univ Jyvaskyla, Jyvaskyla, Finland

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

[24] Univ Erlangen Nurnberg, Erlangen, Germany

[25] Univ Paris Saclay, IRFU, CEA, Gif Sur Yvette, France

[26] HUBNER, Div HUBNER Photon, Kassel, Germany

[27] Univ Gothenburg, Gothenburg, Sweden

[28] CERN, Expt Phys Dept, Geneva, Switzerland

来源：

NATURE | 2024年 / 634卷 / 8036期

基金：

比利时弗兰德研究基金会; 欧洲研究理事会; 芬兰科学院; 欧盟地平线“2020”;

关键词：

RESONANCE IONIZATION SPECTROSCOPY; VELOCITY FILTER SHIP; LASER SPECTROSCOPY; ISOTOPE SHIFTS; ALPHA-DECAY; ACTINIDE; SUPERHEAVY; ELEMENTS; NUCLEI; MODEL;

D O I：

10.1038/s41586-024-08062-z

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The quantum-mechanical nuclear-shell structure determines the stability and limits of the existence of the heaviest nuclides with large proton numbers Z greater than or similar to 100 (refs. 1-3). Shell effects also affect the sizes and shapes of atomic nuclei, as shown by laser spectroscopy studies in lighter nuclides4. However, experimental information on the charge radii and the nuclear moments of the heavy actinide elements, which link the heaviest naturally abundant nuclides with artificially produced superheavy elements, is sparse5. Here we present laser spectroscopy measurements along the fermium (Z = 100) isotopic chain and an extension of data in the nobelium isotopic chain (Z = 102) across a key region. Multiple production schemes and different advanced techniques were applied to determine the isotope shifts in atomic transitions, from which changes in the nuclear mean-square charge radii were extracted. A range of nuclear models based on energy density functionals reproduce well the observed smooth evolution of the nuclear size. Both the remarkable consistency of model prediction and the similarity of predictions for different isotopes suggest a transition to a regime in which shell effects have a diminished effect on the size compared with lighter nuclei. Laser spectroscopy measurements of the fermium isotopic chain show a smooth trend in the nuclear size of heavy actinide elements, and diminishing shell effects on the size evolution compared with lighter nuclei.

引用

页码：1075 / 1079

页数：17

共 12 条

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