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Coulomb excitation of Ga-73

Diriken, J.; Stefanescu, I.; Balabanski, D.; Blasi, N.; Blazhev, A.; Bree, N.; Cederkäll, Joakim LU ; Cocolios, T. E.; Davinson, T. and Eberth, J., et al. (2010) In Physical Review C (Nuclear Physics) 82(6).
Abstract
The B(E2; I-i -> I-f) values for transitions in Ga-71(31)40 and Ga-73(31)42 were deduced from a Coulomb excitation experiment at the safe energy of 2.95 MeV/nucleon using post-accelerated beams of Ga-71,Ga-73 at the REX-ISOLDE on-line isotope mass separator facility. The emitted gamma rays were detected by the MINIBALL gamma-detector array, and B(E2; I-i -> I-f) values were obtained from the yields normalized to the known strength of the 2(+) -> 0(+) transition in the Sn-120 target. The comparison of these new results with the data of less neutron-rich gallium isotopes shows a shift of the E2 collectivity toward lower excitation energy when adding neutrons beyond N = 40. This supports conclusions from previous studies of the... (More)
The B(E2; I-i -> I-f) values for transitions in Ga-71(31)40 and Ga-73(31)42 were deduced from a Coulomb excitation experiment at the safe energy of 2.95 MeV/nucleon using post-accelerated beams of Ga-71,Ga-73 at the REX-ISOLDE on-line isotope mass separator facility. The emitted gamma rays were detected by the MINIBALL gamma-detector array, and B(E2; I-i -> I-f) values were obtained from the yields normalized to the known strength of the 2(+) -> 0(+) transition in the Sn-120 target. The comparison of these new results with the data of less neutron-rich gallium isotopes shows a shift of the E2 collectivity toward lower excitation energy when adding neutrons beyond N = 40. This supports conclusions from previous studies of the gallium isotopes, which indicated a structural change in this isotopic chain between N = 40 and 42. Combined with recent measurements from collinear laser spectroscopy showing a 1/2(-) spin and parity for the ground state, the extracted results revealed evidence for a 1/2(-), 3/2(-) doublet near the ground state in Ga-73(31)42 differing by at most 0.8 keV in energy. (Less)
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Physical Review C (Nuclear Physics)
volume
82
issue
6
publisher
American Physical Society
external identifiers
  • wos:000286738700005
  • scopus:79251554074
ISSN
0556-2813
DOI
10.1103/PhysRevC.82.064309
language
English
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yes
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c21c716c-ecd9-4ecb-8bcc-376bad7dbe54 (old id 1859663)
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2011-04-20 09:02:39
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2018-06-17 04:03:00
@article{c21c716c-ecd9-4ecb-8bcc-376bad7dbe54,
  abstract     = {The B(E2; I-i -> I-f) values for transitions in Ga-71(31)40 and Ga-73(31)42 were deduced from a Coulomb excitation experiment at the safe energy of 2.95 MeV/nucleon using post-accelerated beams of Ga-71,Ga-73 at the REX-ISOLDE on-line isotope mass separator facility. The emitted gamma rays were detected by the MINIBALL gamma-detector array, and B(E2; I-i -> I-f) values were obtained from the yields normalized to the known strength of the 2(+) -> 0(+) transition in the Sn-120 target. The comparison of these new results with the data of less neutron-rich gallium isotopes shows a shift of the E2 collectivity toward lower excitation energy when adding neutrons beyond N = 40. This supports conclusions from previous studies of the gallium isotopes, which indicated a structural change in this isotopic chain between N = 40 and 42. Combined with recent measurements from collinear laser spectroscopy showing a 1/2(-) spin and parity for the ground state, the extracted results revealed evidence for a 1/2(-), 3/2(-) doublet near the ground state in Ga-73(31)42 differing by at most 0.8 keV in energy.},
  articleno    = {064309},
  author       = {Diriken, J. and Stefanescu, I. and Balabanski, D. and Blasi, N. and Blazhev, A. and Bree, N. and Cederkäll, Joakim and Cocolios, T. E. and Davinson, T. and Eberth, J. and Ekström, Andreas and Fedorov, D. V. and Fedosseev, V. N. and Fraile, L. M. and Franchoo, S. and Georgiev, G. and Gladnishki, K. and Huyse, M. and Ivanov, O. V. and Ivanov, V. S. 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 Reiter, P. and Seliverstov, M. and Sletten, G. and Van de Walle, J. and Van Duppen, P. and Voulot, D. and Walters, W. B. and Warr, N. and Wenander, F. and Wrzosek, K.},
  issn         = {0556-2813},
  language     = {eng},
  number       = {6},
  publisher    = {American Physical Society},
  series       = {Physical Review C (Nuclear Physics)},
  title        = {Coulomb excitation of Ga-73},
  url          = {http://dx.doi.org/10.1103/PhysRevC.82.064309},
  volume       = {82},
  year         = {2010},
}