1 / 17

Coulomb excitation of the neutron-rich 67,69,71,73 Cu with Miniball and REX-ISOLDE

Coulomb excitation of the neutron-rich 67,69,71,73 Cu with Miniball and REX-ISOLDE Experiment IS435. Irina Stefanescu 1 , O. Ivanov 1 , J. Van de Walle 1 , N. Patronis 1 , D. Pauwels 1 , T. E. Cocolios 1 , N. Bree 1 , M. Huyse 1 , P. Van Duppen 1.

kelly-shelton
Download Presentation

Coulomb excitation of the neutron-rich 67,69,71,73 Cu with Miniball and REX-ISOLDE

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Coulomb excitation of the neutron-rich 67,69,71,73Cu with Miniball and REX-ISOLDE Experiment IS435 Irina Stefanescu1, O. Ivanov1, J. Van de Walle1, N. Patronis1, D. Pauwels1, T. E. Cocolios1, N. Bree1, M. Huyse1, P. Van Duppen1 G. Georgiev2, T. Kröll3, P. Maierbeck3, A. Blazhev4, N. Warr4, S. Franchoo5, J. Iwanicki6, P. Napiorkowski6, K. Wrzosek6, D. Balabanski7, K. Gladnishki7, G. Rainovski7, G. Lo Bianco8, N. Blasi8, A. Lagoyannis9, T. Konstantinopoulos9, A. Ekström10 1IKS, KU Leuven 2CSNSM Orsay, France 3TU München, Germany 4IKP Köln, Germany 5IPN Orsay, France 6Heavy Ion Laboratory, Warsaw University, Poland 7University of Sofia, Bulgaria 8Universita di Camerino, Italy 9National Research Center Demokritos, Greece 10Lund University, Sweden Funded by IAP Belgium, BMBF, EURONS

  2. measured by Coulex with RIBs g9/2 “monopole migration” g9/2 40 p1/2 f5/2 p3/2 28 f7/2 protons neutrons Beyond 68Ni by Coulomb excitation with RIBs

  3. g9/2 2 (7/2-) Eex (MeV) (7/2-) 1 (5/2-) (3/2-) 71Cu42 0 67,69,71,73Cu and the monopole migration (f7/2)-1 7/2- 7/2- 7/2- 7/2- p3/22+ (A-1Ni) 5/2- p1/2 1/2- (7/2-) f5/2 5/2- (7/2-) 1/2- (5/2-) 3/2- p3/2 3/2- (3/2-) 67Cu38 69Cu40 73Cu44 67,69Cu: B. Zeidman et al., PRC 18, 2122(1978). 71Cu: R. Grzywacz et al., PRL 81, 766 (1998). 69,71,73Cu: S. Franchoo et al., PRL 81, 3100(1998).

  4. g9/2 2 (7/2-) Eex (MeV) (7/2-) 1 (5/2-) (3/2-) 71Cu42 0 67,69,71,73Cu and the monopole migration SF SF (f7/2)-1 7/2- 3.1 7/2- 0.45 0.9 7/2- 2.7 7/2- p3/22+ (A-1Ni) 5/2- p1/2 1.5 1/2- 0.26 (7/2-) f5/2 5/2- 0.3 (7/2-) 1/2- 0.46 (5/2-) 3/2- p3/2 1.9 3/2- 1.3 (3/2-) 67Cu38 69Cu40 73Cu44 67,69Cu: B. Zeidman et al., PRC 18, 2122(1978). 71Cu: R. Grzywacz et al., PRL 81, 766 (1998). 69,71,73Cu: S. Franchoo et al., PRL 81, 3100(1998).

  5. Radioactive beams of 67,69,71,73Cu • UCx target – Ta line • ionized by RILIS • REX: ~2.95 MeV/u • beams contaminated with the Ga isobar • laser ON/OFF runs  67Cu/total~ 98 % 69Cu/total~ 94 % 71Cu/total~ 76 % 73Cu/total~ 19 %

  6. Experimental results (1) 67Cu 7/2- 2340 (f7/2)-1 5/2- 7/2- 1670 p3/22+ (66Ni) 1/2- 7/2- 1/2- 1170 104Pd 5/2- 1115 67Cu38 DC for A=67 3/2- 1871 69Cu 7/2- p3/22+ (68Ni) (f7/2)-1 7/2- 1711 1/2- 5/2- 1213 5/2- 7/2- 104Pd 1/2- 1096 69Cu40 DC for A=69 3/2-

  7. Experimental results (2) (1/2-) 71Cu 454 keV 7/2- (7/2-) 1190 p3/22+ (70Ni) (f7/2)-1 (7/2-) 981 104Pd 71Ga (5/2-) 534 DC for A=71 (1/2-) 454 71Cu42 71Cu (1/2-) (3/2-) 5/2- 120Sn DC for A=71

  8. Experimental results (3) DC for A=73 (1/2-) 73Cu 5/2- Laser ON (7/2-) 1010 (f7/2)-1 73Ga 120Sn p3/22+ (72Ni) (7/2-) 961 7/2- (5/2-) 166 (1/2-) 135 73Cu44 Laser OFF (3/2-)

  9. new Experimental results (preliminary) spectroscopic factors from B. Zeidman et al., PRC 18, 2122(1978).

  10. new Experimental results (preliminary) spectroscopic factors from B. Zeidman et al., PRC 18, 2122(1978).

  11. Conclusion and outlook • Summer 2006  Coulex of 67,69,71,73Cu; • three B(E2) values measured in each isotope; • ½- identified in 71,73Cu. • strong effects of the N=40 sub-shell closure on the structure of the odd-mass Cu isotopes; • highly collective 1/2- state and single-particle-like 5/2- level in 69,71,73Cu; • interpreting the implications of the present results requires some theoretical input. • Summer 2007  Coulex of 75Cu

  12. measured by Coulex with RIBs g9/2 monopole interaction j> = l+1/2 g9/2 f5/2 j< = l’-1/2 40 28 f7/2 j> = l’+1/2 protons neutrons Beyond 68Ni by Coulomb excitation with RIBs

  13. j> = l+1/2 g9/2 f5/2 j< = l’-1/2 f7/2 j> = l’+1/2 protons neutrons

  14. Resonant laser ionization (RILIS) Radioactive beams of 67,69,71,73Cu @ISOLDE 1.4 GeV proton beam UCx target REX-ISOLDE XCu+XGa ~2.95 MeV/u 67Cu: 2% 67Ga 73Cu: 80% 73Ga Miniball

  15. Experimental set-up for Coulex @REX-ISOLDE • 4 quadrants • 16 annular strips () • 24 sector strips () Miniball DSSD detector (16o-53o) ACu REX- ISOLDE E~2.95 MeV/u Beam dump detector PPAC 120Sn, 104Pd ~2 mg/cm2 Beam monitor v/c ~ 7%  Doppler correction of the -rays on an event-by-event mode by using the segmentation of the particle and -detectors.

More Related