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Isospin Symmetry in the sd Shell: Transition Strengths in the Neutron-deficient sd Shell Nucleus 33Ar

Wendt, A. ; Taprogge, J. ; Reiter, P. ; Golubev, Pavel LU ; Grawe, H. ; Pietri, S. ; Boutachkov, P. ; Algora, A. ; Ameil, F. and Bentley, M. A. , et al. (2014) In Physical Review C (Nuclear Physics) 90(5).
Abstract
Reduced transition strengths of the deexciting transitions from the first two excited states in 33Ar were measured in a relativistic Coulomb excitation experiment at the GSI Helmholtz center. The radioactive ion beam was produced by fragmentation of a primary 36Ar beam on a 9Be target followed by the selection of the reaction product of interest via the GSI Fragment Separator. The 33Ar beam hit a secondary 197Au target with an energy of approximately 145 MeV/nucleon. An array of high-purity germanium cluster detectors

and large-volume BaF2 scintillator detectors were employed for γ -ray spectroscopy at the secondary target position. The Lund-York-Cologne Calorimeter was used to track the outgoing ions and to identify the nuclear... (More)
Reduced transition strengths of the deexciting transitions from the first two excited states in 33Ar were measured in a relativistic Coulomb excitation experiment at the GSI Helmholtz center. The radioactive ion beam was produced by fragmentation of a primary 36Ar beam on a 9Be target followed by the selection of the reaction product of interest via the GSI Fragment Separator. The 33Ar beam hit a secondary 197Au target with an energy of approximately 145 MeV/nucleon. An array of high-purity germanium cluster detectors

and large-volume BaF2 scintillator detectors were employed for γ -ray spectroscopy at the secondary target position. The Lund-York-Cologne Calorimeter was used to track the outgoing ions and to identify the nuclear reaction channels. For the two lowest energy excited states of 33Ar the reduced transition strengths have been

determined. With these first results the Tz = −3/2 nucleus 33Ar is now, together with 21Na (Tz = −1/2), the only neutron-deficient odd-A sd shell nucleus in which experimental transition strengths are available. The experimental values are compared to results of shell-model calculations which describe simultaneously mirror-energy differences and transition-strength values of mirror pairs in the sd shell in a consistent way. (Less)
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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
relativistic projectile fragmentation, gamma-ray spectroscopy, isospin symmetry
in
Physical Review C (Nuclear Physics)
volume
90
issue
5
article number
054301
pages
7 pages
publisher
American Physical Society
external identifiers
  • wos:000344489100002
  • scopus:84911117241
ISSN
0556-2813
DOI
10.1103/PhysRevC.90.054301
project
Nuclear Structure at the Limits: Isotope-selective Spectroscopy
language
English
LU publication?
yes
id
4fb3d8f1-2824-4289-b2d8-35877e36dff0 (old id 4779090)
alternative location
http://link.aps.org/doi/10.1103/PhysRevC.90.054301
date added to LUP
2016-04-01 14:06:51
date last changed
2022-04-22 01:22:56
@article{4fb3d8f1-2824-4289-b2d8-35877e36dff0,
  abstract     = {{Reduced transition strengths of the deexciting transitions from the first two excited states in 33Ar were measured in a relativistic Coulomb excitation experiment at the GSI Helmholtz center. The radioactive ion beam was produced by fragmentation of a primary 36Ar beam on a 9Be target followed by the selection of the reaction product of interest via the GSI Fragment Separator. The 33Ar beam hit a secondary 197Au target with an energy of approximately 145 MeV/nucleon. An array of high-purity germanium cluster detectors<br/><br>
and large-volume BaF2 scintillator detectors were employed for γ -ray spectroscopy at the secondary target position. The Lund-York-Cologne Calorimeter was used to track the outgoing ions and to identify the nuclear reaction channels. For the two lowest energy excited states of 33Ar the reduced transition strengths have been<br/><br>
determined. With these first results the Tz = −3/2 nucleus 33Ar is now, together with 21Na (Tz = −1/2), the only neutron-deficient odd-A sd shell nucleus in which experimental transition strengths are available. The experimental values are compared to results of shell-model calculations which describe simultaneously mirror-energy differences and transition-strength values of mirror pairs in the sd shell in a consistent way.}},
  author       = {{Wendt, A. and Taprogge, J. and Reiter, P. and Golubev, Pavel and Grawe, H. and Pietri, S. and Boutachkov, P. and Algora, A. and Ameil, F. and Bentley, M. A. and Blazhev, A. and Bloor, D. and Bondili, N. S. and Bowry, M. and Bracco, A. and Braun, N. and Camera, F. and Cederkäll, Joakim and Crespi, F. and de la Salle, A. and DiJulio, Douglas and Doornenbal, P. and Geibel, K. and Gellanki, Jnaneswari and Gerl, J. and Grȩbosz, J. and Guastalla, G. and Habermann, T. and Hackstein, M. and Hoischen, R. and Jungclaus, A. and Merchán, E. and Million, B. and Morales, A. and Moschner, K. and Podolyák, Zs. and Pietralla, N. and Ralet, D. and Reese, M. and Rudolph, Dirk and Scruton, L. and Siebeck, B. and Warr, N. and Wieland, O. and Wollersheim, H. J.}},
  issn         = {{0556-2813}},
  keywords     = {{relativistic projectile fragmentation; gamma-ray spectroscopy; isospin symmetry}},
  language     = {{eng}},
  number       = {{5}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review C (Nuclear Physics)}},
  title        = {{Isospin Symmetry in the sd Shell: Transition Strengths in the Neutron-deficient sd Shell Nucleus 33Ar}},
  url          = {{https://lup.lub.lu.se/search/files/3787491/4779141.pdf}},
  doi          = {{10.1103/PhysRevC.90.054301}},
  volume       = {{90}},
  year         = {{2014}},
}