Quadrupole moments of odd-A 53-63Mn: Onset of collectivity towards N=40

被引：24

作者：

Babcock, C. ^{[1
,2
]}

Heylen, H. ^{[3
]}

Bissell, M. L. ^{[4
]}

Blaum, K. ^{[5
]}

Campbell, P. ^{[4
]}

Cheal, B. ^{[1
]}

Fedorov, D. ^{[12
]}

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

Geithner, W. ^{[7
]}

Gins, W. ^{[3
]}

Goodacre, T. Day ^{[2
,4
]}

Grob, L. K. ^{[4
,10
]}

Kowalska, M. ^{[2
]}

Lenzi, S. M. ^{[8
,9
]}

Maass, B. ^{[10
]}

Malbrunot-Ettenauer, S. ^{[2
]}

Marsh, B. ^{[2
]}

Neugart, R. ^{[5
,11
]}

Neyens, G. ^{[3
]}

Noertershaeuser, W. ^{[10
]}

Otsuka, T. ^{[6
]}

Rossel, R. ^{[2
]}

Rothe, S. ^{[2
]}

Sanchez, R. ^{[7
]}

Tsunoda, Y. ^{[13
]}

Wraith, C. ^{[1
]}

Xie, L. ^{[4
]}

Yang, X. F. ^{[3
]}

机构：

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

[2] CERN, ISOLDE, CH-1211 Geneva 23, Switzerland

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

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

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

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

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

[8] Univ Padua, Dipartimento Fis & Astron, I-35131 Padua, Italy

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

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

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

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

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

来源：

PHYSICS LETTERS B | 2016年 / 760卷

基金：

英国科学技术设施理事会;

关键词：

Quadrupole moments; Laser spectroscopy; Manganese; Deformation; Optical pumping; SHELL-MODEL; NEUTRON; ISOTOPES;

D O I：

10.1016/j.physletb.2016.07.016

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The spectroscopic quadrupole moments of the odd-even Mn isotopes between N = 28 and N = 38 have been measured using bunched-beam collinear laser spectroscopy at ISOLDE, CERN. In order to increase sensitivity to the quadrupole interaction, the measurements have been done using a transition in the ion rather than in the atom, with the additional advantage of better spectroscopic efficiency. Since the chosen transition is from a metastable state, optical pumping in ISOLDE's cooler and buncher (ISCOOL) was used to populate this state. The extracted quadrupole moments are compared to large-scale shell model predictions using three effective interactions, GXPF1A, LNPS and modified A3DA. The inclusion of both the 1 nu g(9/2) and 2 nu d(5/2) orbitals in the model space is shown to be necessary to reproduce the observed increase in the quadrupole deformation from N = 36 onwards. Specifically, the inclusion of the 2 nu d(5/2) orbital induces an increase in neutron and proton excitations across the reduced gaps at N = 40 and Z = 28, leading to an increase in deformation above N = 36. (C) 2016 The Author(s). Published by Elsevier B.V.

引用

页码：387 / 392

页数：6

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