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Collective structures and smooth band termination in 109Sn

Käubler, L. ; Schnare, H. ; Fossan, D. B. ; Afanasjev, A. V. ; Andrejtscheff, W. ; Allat, R. G. ; de Graaf, J. ; Grawe, H. ; Hibbert, I. M. and Lee, I. Y. , et al. (1987) In Zeitschrift für Physik A Hadrons and Nuclei 356(3). p.235-237
Abstract

Six rotational bands up to energies Ex = 24.7 MeV and spins Jπ=(79/2−) have been identified in 109Sn using the GAMMASPHERE γ-detector array. Four of the bands show smoothly decreasing dynamic moments of inertia at rotational frequencies ℏω > 0.6 MeV. The bands arise at medium spins from a coupling of a valence d5/2, g7/2 or h11/2 neutron to the deformed 2p2h proton excitation of the Z=50 core 108Sn. At very high ℏω these bands show the typical behaviour of smoothly terminating bands, i.e. a gradual alignment of the angular momenta of the valence particles and holes corresponding to a transition from high collectivity to noncollective states.

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publishing date
type
Contribution to journal
publication status
published
subject
keywords
21.60.Ev, 23.20.Lv, 27.60.+j
in
Zeitschrift für Physik A Hadrons and Nuclei
volume
356
issue
3
pages
3 pages
publisher
Springer
external identifiers
  • scopus:84951631585
ISSN
0939-7922
DOI
10.1007/s002180050173
language
English
LU publication?
yes
id
d066baad-b376-4ad0-8d3e-5bd134363c9c
date added to LUP
2026-01-15 11:09:22
date last changed
2026-01-23 13:39:12
@article{d066baad-b376-4ad0-8d3e-5bd134363c9c,
  abstract     = {{<p>Six rotational bands up to energies E<sub>x</sub> = 24.7 MeV and spins J<sup>π</sup>=(79/2<sup>−</sup>) have been identified in <sup>109</sup>Sn using the GAMMASPHERE γ-detector array. Four of the bands show smoothly decreasing dynamic moments of inertia at rotational frequencies ℏω &gt; 0.6 MeV. The bands arise at medium spins from a coupling of a valence d<sub>5/2</sub>, g<sub>7/2</sub> or h<sub>11/2</sub> neutron to the deformed 2p2h proton excitation of the Z=50 core <sup>108</sup>Sn. At very high ℏω these bands show the typical behaviour of smoothly terminating bands, i.e. a gradual alignment of the angular momenta of the valence particles and holes corresponding to a transition from high collectivity to noncollective states.</p>}},
  author       = {{Käubler, L. and Schnare, H. and Fossan, D. B. and Afanasjev, A. V. and Andrejtscheff, W. and Allat, R. G. and de Graaf, J. and Grawe, H. and Hibbert, I. M. and Lee, I. Y. and Macchiavelli, A. D. and O’Brien, N. and Maier, K. H. and Paul, E. S. and Prade, H. and Ragnarsson, I. and Reif, J. and Schubart, R. and Schwengner, R. and Thorslund, I. and Vaska, P. and Wadsworth, R. and Winter, G.}},
  issn         = {{0939-7922}},
  keywords     = {{21.60.Ev; 23.20.Lv; 27.60.+j}},
  language     = {{eng}},
  number       = {{3}},
  pages        = {{235--237}},
  publisher    = {{Springer}},
  series       = {{Zeitschrift für Physik A Hadrons and Nuclei}},
  title        = {{Collective structures and smooth band termination in <sup>109</sup>Sn}},
  url          = {{http://dx.doi.org/10.1007/s002180050173}},
  doi          = {{10.1007/s002180050173}},
  volume       = {{356}},
  year         = {{1987}},
}