67,69,71,73 Cu Coulomb excitation of the neutron- -rich Cu - - PowerPoint PPT Presentation

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67 69 71 73 cu coulomb excitation of the neutron rich cu
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67,69,71,73 Cu Coulomb excitation of the neutron- -rich Cu - - PowerPoint PPT Presentation

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rich 67,69,71,73 67,69,71,73 Cu Coulomb excitation of the neutron- -rich Cu Coulomb excitation of the neutron with Miniball Miniball and REX and REX- -ISOLDE ISOLDE with Experiment IS435 Experiment IS435 Irina Stefanescu 1 , O. Ivanov 1

slide-1
SLIDE 1

Coulomb excitation of the neutron Coulomb excitation of the neutron-

  • rich

rich 67,69,71,73

67,69,71,73Cu

Cu with with Miniball Miniball and REX and REX-

  • ISOLDE

ISOLDE

Experiment IS435 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

slide-2
SLIDE 2

Beyond 68Ni by Coulomb excitation with RIBs

measured by Coulex with RIBs

g9/2

28

neutrons protons

g9/2

f7/2 f5/2

40 p3/2 p1/2

“monopole migration”

slide-3
SLIDE 3

67,69,71,73 67,69,71,73Cu and the monopole migration

Cu and the monopole migration

3/2- 1/2- 5/2- 7/2-

69Cu40

3/2- 5/2- 1/2- 7/2-

67Cu38

πp3/2 πf5/2 πp1/2

πp3/2⊕2+ (A-1Ni)

7/2-

(πf7/2)-1

7/2- (3/2-) (5/2-) (7/2-)

73Cu44

(7/2-) (3/2-) (5/2-) (7/2-)

71Cu42

(7/2-)

g9/2

Eex (MeV) 1 2

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).

slide-4
SLIDE 4

67,69,71,73 67,69,71,73Cu and the monopole migration

Cu and the monopole migration

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).

3/2- 1/2- 5/2- 7/2-

69Cu40

3/2- 5/2- 1/2- 7/2-

67Cu38

πp3/2 πf5/2 πp1/2

πp3/2⊕2+ (A-1Ni)

7/2-

(πf7/2)-1

7/2- (3/2-) (5/2-) (7/2-)

73Cu44

Eex (MeV) 1 2

(7/2-) (3/2-) (5/2-) (7/2-)

71Cu42

(7/2-)

g9/2

1.9 0.3 0.26 0.9 3.1 1.3 0.46 1.5 2.7 0.45

SF SF

slide-5
SLIDE 5

Radioactive beams of Radioactive beams of 67,69,71,73

67,69,71,73Cu

Cu

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 %

slide-6
SLIDE 6

104Pd 104Pd 69Cu

1/2- 5/2- 7/2-

67Cu

5/2- 1/2- 7/2-

Experimental results (1) Experimental results (1)

3/2- 5/2- 1/2- 7/2- 7/2- 67Cu38 69Cu40 3/2- 5/2- 1/2- 7/2- 7/2- DC for A=67 DC for A=69 2340 1670 1170 1115 1096 1213 1711 1871

(πf7/2)-1 (πf7/2)-1 πp3/2⊕2+ (66Ni) πp3/2⊕2+ (68Ni)

slide-7
SLIDE 7

71Cu

(1/2-) 5/2-

120Sn

Experimental results (2) Experimental results (2)

104Pd

7/2-

71Cu

71Ga

(1/2-) 454 keV (3/2-) (5/2-) (1/2-) (7/2-) (7/2-) 71Cu42 DC for A=71 DC for A=71 454 534 981 1190

(πf7/2)-1 πp3/2⊕2+ (70Ni)

slide-8
SLIDE 8

Experimental results (3) Experimental results (3)

73Cu

73Ga

Laser ON Laser OFF

(3/2-) (5/2-) (1/2-) (7/2-) (7/2-) 73Cu44 DC for A=73

120Sn

7/2- 135 166 961 1010 (1/2-) 5/2-

(πf7/2)-1 πp3/2⊕2+ (72Ni)

slide-9
SLIDE 9

Experimental results (preliminary) Experimental results (preliminary)

new

spectroscopic factors from B. Zeidman et al., PRC 18, 2122(1978).

slide-10
SLIDE 10

Experimental results (preliminary) Experimental results (preliminary)

new

spectroscopic factors from B. Zeidman et al., PRC 18, 2122(1978).

slide-11
SLIDE 11

Conclusion and outlook 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

slide-12
SLIDE 12
slide-13
SLIDE 13
slide-14
SLIDE 14

Beyond 68Ni by Coulomb excitation with RIBs

measured by Coulex with RIBs

g9/2

28 neutrons protons

j> = l+1/2 j> = l’+1/2 j< = l’-1/2

g9/2 f7/2 f5/2

40

monopole interaction

slide-15
SLIDE 15

protons neutrons

j> = l+1/2 j> = l’+1/2 j< = l’-1/2

g9/2 f7/2 f5/2

slide-16
SLIDE 16

1.4 GeV proton beam Miniball REX-ISOLDE

XCu+XGa ~2.95 MeV/u

Resonant laser ionization (RILIS)

Radioactive beams of Radioactive beams of 67,69,71,73

67,69,71,73Cu @ISOLDE

Cu @ISOLDE

67Cu: 2% 67Ga 73Cu: 80% 73Ga UCx target

slide-17
SLIDE 17

Experimental set Experimental set-

  • up for Coulex @REX

up for Coulex @REX-

  • ISOLDE

ISOLDE

Miniball

120Sn, 104Pd

REX- ISOLDE

ACu

E~2.95 MeV/u

PPAC

Beam monitor

DSSD detector

~2 mg/cm2

Beam dump detector

(16o-53o)

v/c ~ 7% Doppler correction of the γ-rays on an event-by-event mode by using the segmentation of the particle and γ-detectors.

  • 4 quadrants
  • 16 annular strips (θ)
  • 24 sector strips (φ)