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High-spin structure in Er-157 up to and above band termination

Evans, AO; Paul, ES; Simpson, J; Riley, MA; Appelbe, DE; Campbell, DB; Choy, PTW; Clark, RM; Cromaz, M and Fallon, P, et al. (2006) In Physical Review C (Nuclear Physics) 73(6).
Abstract
The high-spin structure of Er-157 has been greatly expanded using the Gammasphere spectrometer to investigate the Cd-114(Ca-48,5n) reaction at 215 MeV. Many new transitions have been placed in a greatly augmented level scheme up to spin 40h with many collective rotational sequences established. With increasing angular momentum, this nucleus undergoes a Coriolis-induced shape transition from a deformed state of collective rotation to a noncollective configuration. This transition manifests itself as favored band termination near I=45h in three rotational structures. Many weakly populated states lying at high excitation energy that decay into the terminating states have been discovered. Cranked-Nilsson-Strutinsky calculations suggest that... (More)
The high-spin structure of Er-157 has been greatly expanded using the Gammasphere spectrometer to investigate the Cd-114(Ca-48,5n) reaction at 215 MeV. Many new transitions have been placed in a greatly augmented level scheme up to spin 40h with many collective rotational sequences established. With increasing angular momentum, this nucleus undergoes a Coriolis-induced shape transition from a deformed state of collective rotation to a noncollective configuration. This transition manifests itself as favored band termination near I=45h in three rotational structures. Many weakly populated states lying at high excitation energy that decay into the terminating states have been discovered. Cranked-Nilsson-Strutinsky calculations suggest that the levels that feed the terminating states arise from weakly collective configurations that break the Z=64 semimagic core. (Less)
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published
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Physical Review C (Nuclear Physics)
volume
73
issue
6
publisher
American Physical Society
external identifiers
  • wos:000238697500012
  • scopus:33745154882
ISSN
0556-2813
DOI
10.1103/PhysRevC.73.064303
language
English
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yes
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a4263a21-fcc1-45e3-afb7-946e56b87691 (old id 404366)
date added to LUP
2007-10-02 19:02:22
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2019-10-01 02:18:58
@article{a4263a21-fcc1-45e3-afb7-946e56b87691,
  abstract     = {The high-spin structure of Er-157 has been greatly expanded using the Gammasphere spectrometer to investigate the Cd-114(Ca-48,5n) reaction at 215 MeV. Many new transitions have been placed in a greatly augmented level scheme up to spin 40h with many collective rotational sequences established. With increasing angular momentum, this nucleus undergoes a Coriolis-induced shape transition from a deformed state of collective rotation to a noncollective configuration. This transition manifests itself as favored band termination near I=45h in three rotational structures. Many weakly populated states lying at high excitation energy that decay into the terminating states have been discovered. Cranked-Nilsson-Strutinsky calculations suggest that the levels that feed the terminating states arise from weakly collective configurations that break the Z=64 semimagic core.},
  author       = {Evans, AO and Paul, ES and Simpson, J and Riley, MA and Appelbe, DE and Campbell, DB and Choy, PTW and Clark, RM and Cromaz, M and Fallon, P and Gorgen, A and Joss, DT and Lee, IY and Macchiavelli, AO and Nolan, PJ and Pipidis, A and Ward, D and Ragnarsson, Ingemar},
  issn         = {0556-2813},
  language     = {eng},
  number       = {6},
  publisher    = {American Physical Society},
  series       = {Physical Review C (Nuclear Physics)},
  title        = {High-spin structure in Er-157 up to and above band termination},
  url          = {http://dx.doi.org/10.1103/PhysRevC.73.064303},
  volume       = {73},
  year         = {2006},
}