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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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publication status
published
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Physical Review Letters
volume
100
issue
11
publisher
American Physical Society
external identifiers
  • wos:000254292300019
  • scopus:41449116210
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
2008-09-02 09:10:55
date last changed
2017-07-09 03:40:58
@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},
  volume       = {100},
  year         = {2008},
}