coulomb excitation of the neutron-rich 67,69,71,73 cu with miniball and rex-isolde
DESCRIPTION
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. - PowerPoint PPT PresentationTRANSCRIPT
Coulomb excitation of the neutron-rich Coulomb excitation of the neutron-rich 67,69,71,7367,69,71,73Cu Cu with Miniball and REX-ISOLDEwith Miniball and REX-ISOLDE
Experiment IS435Experiment 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 Leuven2CSNSM Orsay, France
3TU München, Germany4IKP Köln, Germany
5IPN Orsay, France6Heavy Ion Laboratory, Warsaw University, Poland
7University of Sofia, Bulgaria8Universita di Camerino, Italy
9National Research Center Demokritos, Greece10Lund University, Sweden
Funded by IAP Belgium, BMBF, EURONS
Beyond 68Ni by Coulomb excitation with RIBs
measured by Coulex with RIBs
g9/2
28
neutronsprotons
g9/2
f7/2
f5/2
40
p3/2
p1/2
“monopole migration”
67,69,71,7367,69,71,73Cu and the monopole migrationCu and the monopole migration
3/2-
1/2-
5/2-
7/2-
69Cu40
3/2-
5/2-
1/2-
7/2-
67Cu38
p3/2
f5/2
p1/2
p3/22+ (A-1Ni)
7/2-(f7/2)-17/2-
(3/2-)
(5/2-)
(7/2-)
73Cu44
(7/2-)
(3/2-)
(5/2-)
(7/2-)
71Cu42
(7/2-)
g9/2
Eex (M
eV)
0
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).
67,69,71,7367,69,71,73Cu and the monopole migrationCu 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
p3/2
f5/2
p1/2
p3/22+ (A-1Ni)
7/2-(f7/2)-17/2-
(3/2-)
(5/2-)
(7/2-)
73Cu44
Eex (M
eV)
0
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
SFSF
Radioactive beams of Radioactive beams of 67,69,71,7367,69,71,73CuCu
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 %
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
69Cu403/2-
5/2-
1/2-
7/2-
7/2-
DC for A=67
DC for A=69
2340
1670
1170
1115
1096
1213
1711
1871
(f7/2)-1
(f7/2)-1
p3/22+ (66Ni)
p3/22+ (68Ni)
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
(f7/2)-1
p3/22+ (70Ni)
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-
(f7/2)-1
p3/22+ (72Ni)
Experimental results (preliminary)Experimental results (preliminary)
new
spectroscopic factors from B. Zeidman et al., PRC 18, 2122(1978).
Experimental results (preliminary)Experimental results (preliminary)
new
spectroscopic factors from B. Zeidman et al., PRC 18, 2122(1978).
Conclusion and outlookConclusion 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
Beyond 68Ni by Coulomb excitation with RIBs
measured by Coulex with RIBs
g9/2
28
neutronsprotons
j> = l+1/2
j> = l’+1/2
j< = l’-1/2g9/2
f7/2
f5/2 40
monopole interaction
1.4 GeV proton beam
Miniball
REX-ISOLDEXCu+XGa ~2.95 MeV/u
Resonant laser ionization (RILIS)
Radioactive beams of Radioactive beams of 67,69,71,7367,69,71,73Cu @ISOLDECu @ISOLDE
67Cu: 2% 67Ga
73Cu: 80% 73Ga
UCx target
Experimental set-up for Coulex @REX-ISOLDEExperimental set-up for Coulex @REX-ISOLDE
Miniball
120Sn, 104Pd
REX-ISOLDE
ACuE~2.95 MeV/u
PPACBeam
monitor
DSSD detector
~2 mg/cm2
Beam dump detector
(16o-53o)
v/c ~ 7% Doppler correction of the -rays on an event-by-event mode by using the segmentation of the particle and -detectors.
• 4 quadrants
• 16 annular strips ()
• 24 sector strips ()