1. Nanuf03, Bucharest, 7.-12. 9. 2003Stefan Kopecky Traps for fission product ions at IGISOL Experimental Facilities Mass Measurements Status and Future Perspectives Experimental Facilities Mass Measurements Status and Future Perspectives

2. Nanuf03, Bucharest, 7.-12. 9. 2003Stefan Kopecky IGISOL Fission Yields

3. Nanuf03, Bucharest, 7.-12. 9. 2003Stefan Kopecky IGISOL (Ion Guide Isotope Separation Online) Short delay Times Chemical Insensitive Large Energy Spread (100 eV) Continuous Beam

4. Nanuf03, Bucharest, 7.-12. 9. 2003Stefan Kopecky RFQ-Trap Layout

5. Nanuf03, Bucharest, 7.-12. 9. 2003Stefan Kopecky RFQ-cooler

6. Nanuf03, Bucharest, 7.-12. 9. 2003Stefan Kopecky Radial confinement +Vcos  t -Vcos  t

7. Nanuf03, Bucharest, 7.-12. 9. 2003Stefan Kopecky Axial confinement Transmission 50 % Bunch width 2-3  s Energy spread <1 eV

8. Nanuf03, Bucharest, 7.-12. 9. 2003Stefan Kopecky Collinear Laser-Spectroscopy increased by a factor of 10 reduced by a factor of 20 =R ph  T gate /T acc =  F overlap  F doppler   geom   PM  F atom

9. Nanuf03, Bucharest, 7.-12. 9. 2003Stefan Kopecky Magnet 7T superconducting Magnet Magnex Scientific Ltd 160mm warm bore 2 homogenous regions 1cm 3 10 -6 and 10 -7

10. Nanuf03, Bucharest, 7.-12. 9. 2003Stefan Kopecky Purification Trap Electrode Structure

11. Nanuf03, Bucharest, 7.-12. 9. 2003Stefan Kopecky Radial Motion without buffer gaswith buffer gas Magnetron motion  - Cyclotron motion  +  - +  + =  C = qB/m Cyclotron radius decreases Magnetron radius increases

12. Nanuf03, Bucharest, 7.-12. 9. 2003Stefan Kopecky Dipol –Excitation with  - HP33120A

13. Nanuf03, Bucharest, 7.-12. 9. 2003Stefan Kopecky Quadrupol –Excitation with  C 126 Xe HP33120A

14. Nanuf03, Bucharest, 7.-12. 9. 2003Stefan Kopecky Fast-scheme Total cycle time 120ms p = 9.9 e-2 mbar Cooling time 55 ms  - 5ms / 300mV  C 55ms / 350mV FWHM = 35Hz R = m/  m = 24500 126 Xe

15. Nanuf03, Bucharest, 7.-12. 9. 2003Stefan Kopecky Best Mass resolution 58 Cu 58 Ni FWHM=13,6Hz R=135700 Mass Excess Our result: -51674 +/- 30keV AME95: -51660 +/- 2.5keV FWHM=13,8Hz R=134100

16. Nanuf03, Bucharest, 7.-12. 9. 2003Stefan Kopecky Purification Trap Transmission between 30-35 % – spark ion source, stable Xe, Faraday-cup –  -activity, Fission products A=112 ( Rh-112), Si-detector Capturing efficiency of trap 60% Total Efficiency 20%  Front end for Precision Trap  Isobaric pure beams for Decay Spectroscopy  Mass Measurements

17. Nanuf03, Bucharest, 7.-12. 9. 2003Stefan Kopecky p-induced fission, A=112 Ru-112 T 1/2 =1.75s Rh-112 T 1/2 =2.1s Q  =3.670MeV Pd-112 T 1/2 =21.03h Q  =6.8 MeV

18. Nanuf03, Bucharest, 7.-12. 9. 2003Stefan Kopecky Beam Purification

19. Nanuf03, Bucharest, 7.-12. 9. 2003Stefan Kopecky Tof-methode

20. Nanuf03, Bucharest, 7.-12. 9. 2003Stefan Kopecky Tof-resonance

21. Nanuf03, Bucharest, 7.-12. 9. 2003Stefan Kopecky Fundamental interactions and symmetries (< 1 keV) –Q-values of nuclear  decay CVC theory and unitarity of CKM matrix Search for scalar and tensor currents Charge symmetry in nuclei (1 keV) –Isospin multiplets and Coulomb energy differences Nuclear structure (10-100 keV) –Global correlations (100 keV) –Local correlations (10 keV) Local deformation, coexistence, mixing and pairing –Drip-line phenomena and halos (10 keV) Nuclear astrophysics (>10 keV) What level of accuracies are needed?

22. Nanuf03, Bucharest, 7.-12. 9. 2003Stefan Kopecky Structure of neutron-rich Zr-isotopes ” Ground state changes from spherical to deformed via coexistence” See, G. Lhersonneau et al.,Phys. Rev. C49(1994)1379 & refs. No reliable direct mass measurements existed so far!

23. Nanuf03, Bucharest, 7.-12. 9. 2003Stefan Kopecky 104 Zr Total cycle time 450ms p = 3 e-2 mbar Cooling time 330 ms  - 15ms / 160mV  C 90ms / 190mV FWHM = 18 Hz R = 45000 Zr-measurement

24. Nanuf03, Bucharest, 7.-12. 9. 2003Stefan Kopecky preliminary Zr results

25. Nanuf03, Bucharest, 7.-12. 9. 2003Stefan Kopecky preliminary Zr results

26. Nanuf03, Bucharest, 7.-12. 9. 2003Stefan Kopecky Nuclear Mean Field Calculation Stoitsov M.V, Dobaczewski J. and Nazarewicz W., to be published

27. Nanuf03, Bucharest, 7.-12. 9. 2003Stefan Kopecky Z=40, A=100 -region Mo Nb Zr Y Sr

28. Nanuf03, Bucharest, 7.-12. 9. 2003Stefan Kopecky Summary RFQ-Cooler Reduce in energy spread of ion beam (<1eV) Bunching of beam ( 2 - 3  s)  Improved condition for Collinear Laser Spectroscopy  Front end for Purification Trap Purification Trap Isobaric Pure beams ( R = 20000-150000) Cycle Times ( 120ms - 450ms)  Front End for Precision Trap  Decay Spectroscopy of Exotic Nuclei  Mass Measurement for Nuclear Structure Effects Precision Trap  High Precision Mass Measurements