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Interplay between single-particle and collective effects in the odd-A Cu isotopes beyond N=40

Stefanescu, I ; Georgiev, G ; Balabanski, D L ; Blasi, N ; Blazhev, A ; Bree, N ; Cederkäll, Joakim LU ; Cocolios, T E ; Davinson, T and Diriken, J , et al. (2008) In Physical Review Letters 100(11).
Abstract
Collective properties of the low-lying levels in the odd-A Cu67-73 were investigated by Coulomb excitation with radioactive beams. The beams were produced at ISOLDE and postaccelerated by REX-ISOLDE up to 2.99 MeV/u. In Cu-67,Cu-69, low-lying 1/2(-), 5/2(-), and 7/2(-) states were populated. In Cu-71,Cu-73, besides the known transitions deexciting the single-particle-like 5/2(-) and core-coupled 7/2(-) levels, gamma rays of 454 and 135 keV, respectively, were observed for the first time. Based on a reanalysis of beta-decay work and comparison with the systematics, a spin 1/2(-) is suggested for these excited states. Three B(E2) values were determined in each of the four isotopes. The results indicate a significant change in the structure... (More)
Collective properties of the low-lying levels in the odd-A Cu67-73 were investigated by Coulomb excitation with radioactive beams. The beams were produced at ISOLDE and postaccelerated by REX-ISOLDE up to 2.99 MeV/u. In Cu-67,Cu-69, low-lying 1/2(-), 5/2(-), and 7/2(-) states were populated. In Cu-71,Cu-73, besides the known transitions deexciting the single-particle-like 5/2(-) and core-coupled 7/2(-) levels, gamma rays of 454 and 135 keV, respectively, were observed for the first time. Based on a reanalysis of beta-decay work and comparison with the systematics, a spin 1/2(-) is suggested for these excited states. Three B(E2) values were determined in each of the four isotopes. The results indicate a significant change in the structure of the odd-A Cu isotopes beyond N=40 where single-particle-like and collective levels are suggested to coexist at very low excitation energies. (Less)
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review Letters
volume
100
issue
11
publisher
American Physical Society
external identifiers
  • wos:000254292300019
  • scopus:41449116210
  • pmid:18517779
ISSN
1079-7114
DOI
10.1103/PhysRevLett.100.112502
language
English
LU publication?
yes
id
e2f497c0-7e5d-496d-8927-6318c178e543 (old id 1182808)
date added to LUP
2016-04-01 12:11:30
date last changed
2022-02-14 16:06:59
@article{e2f497c0-7e5d-496d-8927-6318c178e543,
  abstract     = {{Collective properties of the low-lying levels in the odd-A Cu67-73 were investigated by Coulomb excitation with radioactive beams. The beams were produced at ISOLDE and postaccelerated by REX-ISOLDE up to 2.99 MeV/u. In Cu-67,Cu-69, low-lying 1/2(-), 5/2(-), and 7/2(-) states were populated. In Cu-71,Cu-73, besides the known transitions deexciting the single-particle-like 5/2(-) and core-coupled 7/2(-) levels, gamma rays of 454 and 135 keV, respectively, were observed for the first time. Based on a reanalysis of beta-decay work and comparison with the systematics, a spin 1/2(-) is suggested for these excited states. Three B(E2) values were determined in each of the four isotopes. The results indicate a significant change in the structure of the odd-A Cu isotopes beyond N=40 where single-particle-like and collective levels are suggested to coexist at very low excitation energies.}},
  author       = {{Stefanescu, I and Georgiev, G and Balabanski, D L and Blasi, N and Blazhev, A and Bree, N and Cederkäll, Joakim and Cocolios, T E and Davinson, T and Diriken, J and Eberth, J and Ekström, Andreas and Fedorov, D and Fedosseev, V N and Fraile, L M and Franchoo, S and Gladnishki, K and Huyse, M and Ivanov, O and Ivanov, V and Iwanicki, J and Jolie, J and Konstantinopoulos, T and Kroell, Th and Kruecken, R and Koester, U and Lagoyannis, A and Lo Bianco, G and Maierbeck, P and Marsh, B A and Napiorkowski, P and Patronis, N and Pauwels, D and Rainovski, G and Reiter, P and Riisager, K and Seliverstov, M and Sletten, G and Van de Walle, J and Van Duppen, P and Voulot, D and Warr, N and Wenander, F and Wrzosek, K}},
  issn         = {{1079-7114}},
  language     = {{eng}},
  number       = {{11}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review Letters}},
  title        = {{Interplay between single-particle and collective effects in the odd-A Cu isotopes beyond N=40}},
  url          = {{http://dx.doi.org/10.1103/PhysRevLett.100.112502}},
  doi          = {{10.1103/PhysRevLett.100.112502}},
  volume       = {{100}},
  year         = {{2008}},
}