Changes in nuclear structure along the Mn isotopic chain studied via charge radii

被引：8

作者：

Heylen, H. ^{[1
]}

Babcock, C. ^{[2
,3
]}

Beerwerth, R. ^{[4
,5
]}

Billowes, J. ^{[6
]}

Bissell, M. L. ^{[1
,6
]}

Blaum, K. ^{[7
]}

Bonnard, J. ^{[8
]}

Campbell, P. ^{[6
]}

Cheal, B. ^{[2
]}

Goodacre, T. Day ^{[6
,9
]}

Fedorov, D. ^{[10
]}

Fritzsche, S. ^{[4
,5
]}

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

Geithner, W. ^{[11
]}

Geppert, Ch. ^{[12
,13
]}

Gins, W. ^{[1
]}

Grob, L. K. ^{[9
,13
]}

Kowalska, M. ^{[9
]}

Kreim, K. ^{[7
]}

Lenzi, S. M. ^{[8
,14
]}

Moore, I. D. ^{[15
,16
]}

Maass, B. ^{[13
]}

Malbrunot-Ettenauer, S. ^{[9
]}

Marsh, B. ^{[9
]}

Neugart, R. ^{[7
,12
]}

Neyens, G. ^{[1
]}

Noertershaeuser, W. ^{[13
]}

Otsuka, T. ^{[17
]}

Papuga, J. ^{[1
]}

Rossel, R. ^{[9
]}

Rothe, S. ^{[9
]}

Sanchez, R. ^{[11
]}

Tsunoda, Y. ^{[18
]}

Wraith, C. ^{[2
]}

Xie, L. ^{[6
]}

Yang, X. F. ^{[1
]}

Yordanov, D. T. ^{[7
,19
]}

机构：

[1] Katholieke Univ Leuven, Inst Kern & Stralingsfys, B-3001 Leuven, Belgium

[2] Univ Liverpool, Oliver Lodge Lab, Oxford St, Liverpool L69 7ZE, Merseyside, England

[3] CERN, Expt Phys Dept, ISOLDE, CH-1211 Geneva 23, Switzerland

[4] Helmholtz Inst Jena, Frobelstieg 3, D-07743 Jena, Germany

[5] Friedrich Schiller Univ Jena, Theoret Phys Inst, D-07743 Jena, Germany

[6] Univ Manchester, Sch Phys & Astron, Manchester M13 9PL, Lancs, England

[7] Max Planck Inst Kernphys, D-69117 Heidelberg, Germany

[8] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy

[9] CERN, Dept Phys, ISOLDE, CH-1211 Geneva 23, Switzerland

[10] Petersburg Nucl Phys Inst, Gatchina 188350, Russia

[11] GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany

[12] Johannes Gutenberg Univ Mainz, Inst Kernchem, D-55128 Mainz, Germany

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

[14] Univ Padua, Dipartimento Fis & Astron, Padua, Italy

[15] Univ Jyvaskyla, Dept Phys, PB 35 YFL, Jyvaskyla, Finland

[16] Univ Helsinki, Helsinki Inst Phys, FI-00014 Helsinki, Finland

[17] Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan

[18] Univ Tokyo, Ctr Nucl Study, Bunkyo Ku, Tokyo 1130033, Japan

[19] Univ Paris Saclay, Univ Paris Sud, Inst Phys Nucl, CNRS,IN2P3, F-91406 Orsay, France

来源：

PHYSICAL REVIEW C | 2016年 / 94卷 / 05期

基金：

英国科学技术设施理事会;

关键词：

SHELL-MODEL; LASER SPECTROSCOPY; QUADRUPOLE-MOMENTS; NEUTRON; PROGRAM; SHIFTS; N=20;

D O I：

10.1103/PhysRevC.94.054321

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The hyperfine spectra of Mn-51,Mn-53-64 were measured in two experimental runs using collinear laser spectroscopy at ISOLDE, CERN. Laser spectroscopy was performed on the atomic 3d(5) 4s(2) S-6(5/2)-> 3d(5) 4s4p P-6(3/2) and ionic 3d(5) 4s S-5(2)-> 3d(5) 4p P-5(3) transitions, yielding two sets of isotope shifts. The mass and field shift factors for both transitions have been calculated in the multiconfiguration Dirac-Fock framework and were combined with a King plot analysis in order to obtain a consistent set of mean-square charge radii which, together with earlier work on neutron-deficient Mn, allow the study of nuclear structure changes from N = 25 across N = 28 up to N = 39. A clear development of deformation is observed towards N = 40, confirming the conclusions of the nuclear moments studies. From a Monte Carlo shell-model study of the shape in the Mn isotopic chain, it is suggested that the observed development of deformation is not only due to an increase in static prolate deformation but also due to shape fluctuations and triaxiality. The changes in mean-square charge radii are well reproduced using the Duflo-Zuker formula except in the case of large deformation.

引用

页数：11

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