Isomer in 179W Studied with the Level-Mixing Spectroscopy Method
نویسندگان
چکیده
D. L. Balabanski,1,2 K. Vyvey,1 G. Neyens,1 N. Coulier,1 R. Coussement,1 G. Georgiev,1 A. Lèpine-Szily,1,3 S. Ternier,1 S. Teughels,1 M. Mineva,4 P. M. Walker,5 P. Blaha,6 D. Almehed,7 and S. Frauendorf7,8 1University of Leuven, IKS, Celestijnenlaan 200 D, B-3001 Leuven, Belgium 2Faculty of Physics, St. Kliment Ohridski University of Sofia, BG-1164 Sofia, Bulgaria 3IFU, Sao Paulo, CP 20156, Sao Paulo, Brazil 4Department of Physics, Lund University, S-221 00 Lund, Sweden 5Department of Physics, University of Surrey, Guilford GU2 7XH, United Kingdom 6Institut für Physikalische und Theoretische Chemie, Technical University Vienna, A-1060 Vienna, Austria 7Institut für Kernund Hadronenphysik, Forschungszentrum Rossendorf, D-01314 Dresden, Germany 8Department of Physics, University of Notre Dame, Indiana 46556 (Received 27 June 2000) The spectroscopic quadrupole moment of the high-spin, high-K five-quasiparticle isomer (K 35 2 , T1 2 750 80 ns, Ei 3349 keV) in 179W has been determined using the level mixing spectroscopy method. A value Qs 4.00 10.83 21.06 e b was derived, which corresponds to an intrinsic quadrupole moment Q0 4.73 10.98 21.25 e b and to a quadrupole deformation b2 0.185 10.038 20.049 . These values differ significantly from the deduced ground-state quadrupole moments and are in disagreement with the current theoretical predictions in this mass region.
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