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High-spin states and band terminations in As-69

Stefanescu, I; Eberth, J; Gersch, G; Steinhardt, T; Thelen, O; Warr, N; Weisshaar, D; Carlsson, Gillis LU ; Ragnarsson, Ingemar LU and de Angelis, G, et al. (2004) In Physical Review C (Nuclear Physics) 70(4).
Abstract
Excited levels in As-69 were studied using the Ca-40(S-32,3p)As-69 reaction at 95 and 105 MeV beam energy. Gamma rays were detected with the EUROBALL spectrometer operated in conjunction with the Neutron Wall and the charged-particle detector array EUCLIDES. New level sequences with positive and negative parity were identified from 3p-gammagamma and gammagammagamma coincidences. Spins were assigned to many of the levels on the basis of directional correlations of oriented states measurements. The previously observed positive-parity band was extended to spin 45/2(+) and it was found to exhibit a crossing with another configuration identified up to spin 53/2(+). Three negative-parity bands were observed for the first time up to spins... (More)
Excited levels in As-69 were studied using the Ca-40(S-32,3p)As-69 reaction at 95 and 105 MeV beam energy. Gamma rays were detected with the EUROBALL spectrometer operated in conjunction with the Neutron Wall and the charged-particle detector array EUCLIDES. New level sequences with positive and negative parity were identified from 3p-gammagamma and gammagammagamma coincidences. Spins were assigned to many of the levels on the basis of directional correlations of oriented states measurements. The previously observed positive-parity band was extended to spin 45/2(+) and it was found to exhibit a crossing with another configuration identified up to spin 53/2(+). Three negative-parity bands were observed for the first time up to spins (43/2(-)), 39/2(-), and (41/2(-)). The previously known band was extended to spin (49/2(-)). No evidence for superdeformation was found, despite very high counting statistics. Configurations were assigned to each of the observed bands through comparisons to the cranked Nilsson-Strutinsky calculations. (Less)
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publication status
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Physical Review C (Nuclear Physics)
volume
70
issue
4
publisher
American Physical Society
external identifiers
  • wos:000225043100022
  • scopus:20244373118
ISSN
0556-2813
DOI
10.1103/PhysRevC.70.044304
language
English
LU publication?
yes
id
e81b8e25-a6d5-4b45-80f2-008b0eb8bb61 (old id 261655)
date added to LUP
2007-11-02 08:58:25
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2017-01-01 07:25:01
@article{e81b8e25-a6d5-4b45-80f2-008b0eb8bb61,
  abstract     = {Excited levels in As-69 were studied using the Ca-40(S-32,3p)As-69 reaction at 95 and 105 MeV beam energy. Gamma rays were detected with the EUROBALL spectrometer operated in conjunction with the Neutron Wall and the charged-particle detector array EUCLIDES. New level sequences with positive and negative parity were identified from 3p-gammagamma and gammagammagamma coincidences. Spins were assigned to many of the levels on the basis of directional correlations of oriented states measurements. The previously observed positive-parity band was extended to spin 45/2(+) and it was found to exhibit a crossing with another configuration identified up to spin 53/2(+). Three negative-parity bands were observed for the first time up to spins (43/2(-)), 39/2(-), and (41/2(-)). The previously known band was extended to spin (49/2(-)). No evidence for superdeformation was found, despite very high counting statistics. Configurations were assigned to each of the observed bands through comparisons to the cranked Nilsson-Strutinsky calculations.},
  author       = {Stefanescu, I and Eberth, J and Gersch, G and Steinhardt, T and Thelen, O and Warr, N and Weisshaar, D and Carlsson, Gillis and Ragnarsson, Ingemar and de Angelis, G and Martinez, T and Jungclaus, A and Schwengner, R and Lieb, KP and Stefanova, EA and Curien, D},
  issn         = {0556-2813},
  language     = {eng},
  number       = {4},
  publisher    = {American Physical Society},
  series       = {Physical Review C (Nuclear Physics)},
  title        = {High-spin states and band terminations in As-69},
  url          = {http://dx.doi.org/10.1103/PhysRevC.70.044304},
  volume       = {70},
  year         = {2004},
}