Presentation is loading. Please wait.

Presentation is loading. Please wait.

ECT* - The interplay between atomic and nuclear physics, Trento 2015 Laser Spectroscopy of 100-130 Cd: Simple Trends in Complex Nuclei D. T. Yordanov for.

Similar presentations


Presentation on theme: "ECT* - The interplay between atomic and nuclear physics, Trento 2015 Laser Spectroscopy of 100-130 Cd: Simple Trends in Complex Nuclei D. T. Yordanov for."— Presentation transcript:

1 ECT* - The interplay between atomic and nuclear physics, Trento 2015 Laser Spectroscopy of 100-130 Cd: Simple Trends in Complex Nuclei D. T. Yordanov for the COLLAPS collaboration

2 ECT* - The interplay between atomic and nuclear physics, Trento 2015 The Shell Model 1s1s 1p1p 1d1d 2s2s 1f1f 2p2p 1s1s 1p 3/2 1p 1/2 1d 5/2 2s2s 1d 3/2 1f 7/2 2p 3/2 1f 5/2 2p 1/2 1g 9/2 2 4 2 6 2 4 8 4 6 2 10 2 8 20 50 28 Nuclear chart Li Be Na Cu Ga Ne Halo nuclei Island of inversion Mg Monopole migration K Magicity Ca 21 st century laser spectroscopy at ISOLDE/CERN Zn Mn 2 2 8 20 28 50 8 20 28 50 82 Z N

3 ECT* - The interplay between atomic and nuclear physics, Trento 2015 2 2 8 20 28 50 8 20 28 50 82 Z N 21 st century laser spectroscopy at ISOLDE/CERN 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 Cd The Shell Model Nuclear chart

4 ECT* 2015Curtesy of M. Stachura

5 ECT* 2015 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 Survey of ground-state properties in the Sn region ground and isomeric state properties of 100-130 Cd Physics case - Cd

6 ECT* - The interplay between atomic and nuclear physics, Trento 2015 Fast-beam fluorescence Atomic work 5s 2 1 S 0 5s5p 3 P 0 5s5p 3 P 1 5s5p 3 P 2 5s6s 3 S 1 326 nm, 7×10 5 s -1 468 nm, 1×10 7 s -1 480 nm, 3.8×10 7 s -1 509 nm, 5×10 7 s -1 Cd atom 1.) ion beam; 2.) laser; 3.) deflection plates; 4.) post acceleration and charge exchange; 5.) optical detection

7 ECT* - The interplay between atomic and nuclear physics, Trento 2015 Nadja Frömmgen et al., Eur. Phys. J. D, 69, 164 (2015) Atomic work Example: hfs of 119 Cd

8 ECT* - The interplay between atomic and nuclear physics, Trento 2015 Nadja Frömmgen et al., Eur. Phys. J. D, 69, 164 (2015) Atomic work Critical input from atomic theory: EFG

9 ECT* - The interplay between atomic and nuclear physics, Trento 2015 accumulation release T1T1 T 2 ≈ T 1 / 10 4 ISCOOL - ISOLDE RFQCB 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 Work in the Cd ion Bunched-beam fluorescence

10 Laser system for 215nm 860 nm 430 nm 215 nm ECT* 2015 215 nm, 2.8×10 8 s -1 5s 2 S 1/2 5p 2 P 3/2 D2D2 Cd ion

11 ECT* - The interplay between atomic and nuclear physics, Trento 2015 Hfs of 119 Cd Phys. Rev. Lett., 110, 192501 (2013) Results & Interpretation

12 ECT* - The interplay between atomic and nuclear physics, Trento 2015 Discovery of long-lived isomeric states in 127, 129 Cd Phys. Rev. Lett., 110, 192501 (2013) Results & Interpretation

13 ECT* - The interplay between atomic and nuclear physics, Trento 2015 Phys. Rev. Lett., 110, 192501 (2013) Discovery of long-lived isomeric states in 127, 129 Cd Results & Interpretation

14 ECT* - The interplay between atomic and nuclear physics, Trento 2015 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) Results & Interpretation

15 ECT* - The interplay between atomic and nuclear physics, Trento 2015 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) n = 1 + p (A - n 0 ), p = 5/9, n 0 = 111 free parameters: ‹j|Q|j› = Q sp = -667(31) mb Q core = -85(8) mb effective charge: e n = 2.5 e Q core Results & Interpretation

16 ECT* - The interplay between atomic and nuclear physics, Trento 2015 Phys. Rev. Lett., 110, 192501 (2013) h 11/2 3/2 + 1/2 + 11/2 - states: extreme shell-model view Results & Interpretation

17 ECT* - The interplay between atomic and nuclear physics, Trento 2015 Charge radii: PRELIMINARY ‹r 2 › 1/2 (fm) Results & Interpretation Michael Hammen, PhD thesis, University of Mainz Trend reproduced: HFB - HFODD/UNEDF1 by N. Nikolov

18 ECT* - The interplay between atomic and nuclear physics, Trento 2015 Isomer vs. ground state: PRELIMINARY Results & Interpretation

19 ECT* - The interplay between atomic and nuclear physics, Trento 2015 IAP Summary Measured model independent I, m, 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 Parabolic behavior of the differential ms charge radii Collinear Laser Spectroscopy @ ISOLDE

20 EURORIB’15 Electron linac - 10  A, 50 MeV 238 U-carbide target & ion source 5 × 10 11 photofissions / s Mass separator LINO

21 ECT* 2015 132 Sn 100 Sn rp process Laser spectroscopy of silver and indium at ALTO r process LINO - Laser Induced Nuclear Orientation at ALTO

22 ECT* 2015 LINO - Laser Induced Nuclear Orientation at ALTO Phase I: 111-120 Ag Phase II: 121-126 Ag charge exchange gas target Phase III: 121-126 Ag

23 ECT* 2015 Sketch of a possible layout for  - delayed  detection  scintillation detectors  scintillation detectors HPGe magnet & implantation crystal polarized beam LINO - Laser Induced Nuclear Orientation at ALTO

24 ECT* 2015   - - Sketch of a possible layout for  - delayed  detection LINO - Laser Induced Nuclear Orientation at ALTO

25 ECT* 2015 LINO - Laser Induced Nuclear Orientation at ALTO


Download ppt "ECT* - The interplay between atomic and nuclear physics, Trento 2015 Laser Spectroscopy of 100-130 Cd: Simple Trends in Complex Nuclei D. T. Yordanov for."

Similar presentations


Ads by Google