TY  - JOUR
AU  - Wendt, A. et al
AU  - Algora, A.
PY  - 2014
DA  - 2014//
TI  - Isospin symmetry in the sd shell: Transition strengths in the neutron-deficient sd shell nucleus Ar-33
T2  - Phys. Rev. C
JO  - Physical Review C
SP  - 054301
EP  - 7pp
VL  - 90
IS  - 5
PB  - Amer Physical Soc
AB  - Reduced transition strengths of the deexciting transitions from the first two excited states in Ar-33 were measured in a relativistic Coulomb excitation experiment at the GSI Helmholtz center. The radioactive ion beam was produced by fragmentation of a primary Ar-36 beam on a Be-9 target followed by the selection of the reaction product of interest via the GSI Fragment Separator. The (33A)r beam hit a secondary Au-197 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 gamma-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 Ar-33 the reduced transition strengths have been determined. With these first results the T-z = -3/2 nucleus Ar-33 is now, together with Na-21 (T-z = -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.
SN  - 0556-2813
UR  - https://doi.org/10.1103/PhysRevC.90.054301
DO  - 10.1103/PhysRevC.90.054301
LA  - English
N1  - WOS:000344489100002
ID  - Wendt+Algora2014
ER  -