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Coexisting normal and triaxial superdeformed structures in Lu-165

Schonwasser, G; Nenoff, N; Hubel, H; Hagemann, GB; Bednarczyk, P; Benzoni, G; Bracco, A; Bringel, P; Chapman, R and Curien, D, et al. (2004) In Nuclear Physics, Section A 735(3-4). p.393-424
Abstract
High-spin states in Lu-165 were populated in the La-139(Si-30, 4n) reaction at a beam energy of 152 MeV and gamma-ray coincidences were measured with the EUROBALL spectrometer array. Nine new rotational bands were discovered, known band structures were considerably extended and many inter-band transitions were found. Structures with normal deformation coexist with bands associated with the strongly deformed triaxial energy minima found in calculations. Three of these triaxial bands form a family of wobbling excitations with phonon quanta n(w) = 0, 1 and 2. The wobbling mode is a unique signature of nuclear triaxiality. Configuration assignments are discussed for the observed band structures. An exchange of configuration between two of the... (More)
High-spin states in Lu-165 were populated in the La-139(Si-30, 4n) reaction at a beam energy of 152 MeV and gamma-ray coincidences were measured with the EUROBALL spectrometer array. Nine new rotational bands were discovered, known band structures were considerably extended and many inter-band transitions were found. Structures with normal deformation coexist with bands associated with the strongly deformed triaxial energy minima found in calculations. Three of these triaxial bands form a family of wobbling excitations with phonon quanta n(w) = 0, 1 and 2. The wobbling mode is a unique signature of nuclear triaxiality. Configuration assignments are discussed for the observed band structures. An exchange of configuration between two of the new bands due to mixing is observed, resulting in different signature partnerships at low and high spins. (Less)
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subject
keywords
nuclear reactions La-139(Si-30, I, 4n), E=152 MeV, gamma, gamma gamma-coin, Euroball array, triaxial deformation, shape coexistence, configurations, Lu-165 deduced high-spin levels, pi, J, measured E gamma
in
Nuclear Physics, Section A
volume
735
issue
3-4
pages
393 - 424
publisher
Elsevier
external identifiers
  • wos:000220819700005
  • scopus:1642414606
ISSN
0375-9474
DOI
10.1016/j.nuclphysa.2004.02.006
language
English
LU publication?
yes
id
0703b06e-f045-412e-9da4-cf43d2a32e43 (old id 280654)
date added to LUP
2007-10-26 13:35:41
date last changed
2017-01-01 06:58:44
@article{0703b06e-f045-412e-9da4-cf43d2a32e43,
  abstract     = {High-spin states in Lu-165 were populated in the La-139(Si-30, 4n) reaction at a beam energy of 152 MeV and gamma-ray coincidences were measured with the EUROBALL spectrometer array. Nine new rotational bands were discovered, known band structures were considerably extended and many inter-band transitions were found. Structures with normal deformation coexist with bands associated with the strongly deformed triaxial energy minima found in calculations. Three of these triaxial bands form a family of wobbling excitations with phonon quanta n(w) = 0, 1 and 2. The wobbling mode is a unique signature of nuclear triaxiality. Configuration assignments are discussed for the observed band structures. An exchange of configuration between two of the new bands due to mixing is observed, resulting in different signature partnerships at low and high spins.},
  author       = {Schonwasser, G and Nenoff, N and Hubel, H and Hagemann, GB and Bednarczyk, P and Benzoni, G and Bracco, A and Bringel, P and Chapman, R and Curien, D and Domscheit, J and Herskind, B and Jensen, DR and Leoni, S and Lo Bianco, G and Ma, WC and Maj, A and Neusser, A and Odegard, SW and Petrache, CM and Rossbach, D and Ryde, Hans and Singh, AK and Spohr, KH},
  issn         = {0375-9474},
  keyword      = {nuclear reactions La-139(Si-30,I,4n),E=152 MeV,gamma,gamma gamma-coin,Euroball array,triaxial deformation,shape coexistence,configurations,Lu-165 deduced high-spin levels,pi,J,measured E gamma},
  language     = {eng},
  number       = {3-4},
  pages        = {393--424},
  publisher    = {Elsevier},
  series       = {Nuclear Physics, Section A},
  title        = {Coexisting normal and triaxial superdeformed structures in Lu-165},
  url          = {http://dx.doi.org/10.1016/j.nuclphysa.2004.02.006},
  volume       = {735},
  year         = {2004},
}