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ARIS, Tokyo 2014 Spins, Moments, and Radii of 100-130 Cd by High-Resolution Laser Spectroscopy D. T. Yordanov 1, D. L. Balabanski 2, M. L. Bissell 3, K.

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Presentation on theme: "ARIS, Tokyo 2014 Spins, Moments, and Radii of 100-130 Cd by High-Resolution Laser Spectroscopy D. T. Yordanov 1, D. L. Balabanski 2, M. L. Bissell 3, K."— Presentation transcript:

1 ARIS, Tokyo 2014 Spins, Moments, and Radii of 100-130 Cd by High-Resolution Laser Spectroscopy D. T. Yordanov 1, D. L. Balabanski 2, M. L. Bissell 3, K. Blaum 1, I. Budinčević 3, B. Cheal 4, K. T. Flanagan 4, N. Frömmgen 5, G. Georgiev 6, Ch. Geppert 5,7, M. Hammen 5, M. Kowalska 8, K. Kreim 1, A. Krieger 5, R. Neugart 5, G. Neyens 3, W. Nörtershäuser 5,9, J. Papuga 3, M. M. Rajabali 3, R. Sánchez 10, S. Schmidt 9 1 Max Planck Institute for Nuclear Physics, Saupfercheckweg 1, 69117 Heidelberg, Germany 2 INRNE, Bulgarian Academy of Science, BG-1784 Sofia, Bulgaria 3 Instituut voor Kern- en Stralingsfysica, KU Leuven, B-3001 Leuven, Belgium 4 School of Physics and Astronomy, The University of Manchester, Manchester M13 9PL, UK 5 Institut für Kernchemie, Universität Mainz, D-55099 Mainz, Germany 6 CSNSM-IN2P3-CNRS, Université de Paris Sud, F-91405 Orsay, France 7 Helmholtz Institute Mainz, D-55099 Mainz, Germany 8 Organisation Européenne pour la Recherche Nucléaire, CH-1211 Geneva 23, Switzerland 9 GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany Collinear Laser Spectroscopy @ ISOLDE

2 ARIS, Tokyo 2014 1g1g 2d2d 3s3s 1h 1g 9/2 1g 7/2 2d 5/2 2d 3/2 3s 1/2 1h 11/2 1h 9/2 50 58 64 68 70 82 92 50 82 Spherical Shell Model 2 2 8 20 28 50 8 20 28 50 82 Z N Cd Nuclear chart

3 ARIS, Tokyo 2014 Outline Physics interest in the Cd isotopes Laser spectroscopy with bunched beams Frequency quadrupling Shell structure from  and Q moments Charge radii Collinear Laser Spectroscopy @ ISOLDE

4 ARIS, Tokyo 2014 132 Sn 100 Sn rp process r process more accurate theoretical lifetimes of the N=82 isotones below 129 Ag shell quenching vs. deformation shell effect in the radii Perspectives for laser spectroscopy in the Sn region ground and isomeric state properties of 100-130 Cd Physics case

5 ARIS, Tokyo 2014

6 accumulation release T1T1 T 2 ≈ T 1 / 10 4 ISCOOL - ISOLDE RFQCB COLLAPS 1.) ion beam; 2.) laser; 3.) deflection plates; 4.) post acceleration; 5.) optical detection Bunched-beam fluorescence of 100-130 Cd Experimental technique

7 ARIS, Tokyo 2014 accumulation release T1T1 T 2 ≈ T 1 / 10 4 ISCOOL - ISOLDE RFQCB Bunched-beam fluorescence of 100-130 Cd 5s 2 S 1/2 227 nm, 3×10 8 s -1 5p 2 P 3/2 5p 2 P 1/2 215 nm, 2.8×10 8 s -1 D1D1 D2D2 Cd ion Experimental technique

8 Laser system for 215nm 860 nm 430 nm 215 nm ARIS, Tokyo 2014

9 Discovery of a long-lived isomeric state in 129 Cd # counts Isotope shift relative to 114 Cd I. II.III. 129 Cd g.s. + isomer Experimental results

10 ARIS, Tokyo 2014 Experimental results # counts Isotope shift relative to 114 Cd I. II.III. 129 Cd, (11/2 - ) Discovery of a long-lived isomeric state in 129 Cd

11 ARIS, Tokyo 2014 Experimental results Discovery of a long-lived isomeric state in 129 Cd # counts Isotope shift relative to 114 Cd I. II.III. 129 Cd, 3/2 +

12 ARIS, Tokyo 2014 h 11/2 ‹j n |Q|j n › = ‹j|Q|j› 2j+1-2n 2j-1 3/2 + 11/2 - states: extreme shell-model view Phys. Rev. Lett., 110, 192501 (2013) Experimental results

13 ARIS, Tokyo 2014 Phys. Rev. Lett., 110, 192501 (2013) Experimental results h 11/2 3/2 + 1/2 + 11/2 - states: extreme shell-model view

14 ARIS, Tokyo 2014 IAP Summary Measured model independent I, , Q and ‹r 2 › of 100-130 Cd First direct observation of long-lived isomers in 127, 129 Cd Linear behavior of the h 11/2 Q moments in 111-129 Cd core polarization from magnetic moments Collinear Laser Spectroscopy @ ISOLDE


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