DPG Phi
Verhandlungen
Verhandlungen
DPG

Dresden 2000 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe

HK: Physik der Hadronen und Kerne

HK 12: Physik mit schweren Ionen III / Kernphysik

HK 12.10: Vortrag

Montag, 20. März 2000, 19:00–19:15, B 98

Study of quadrupole moments of superdeformed bands in 145Gd — •T. Rzaca-Urban1, A. Pasternak2, R.M. Lieder3, W. Urban1, M. Rejmund1, S. Utzelman3, H.J Jensen3, W. Gast3, H. Jäger3, D. Bazzacco4, R. Menegazzo4, S. Lunardi4, C. Rossi Alvarez4, G. de Angelis5, N. Medino5, and D.R. Napoli51IEP, Univ. Warsaw, PL-00-681 Warsaw — 2IPTI, RU-194021 St. Petersburg, — 3IKP, FZ Jülich, D-52425 Jülich — 4INFN, Sezione di Padova, I-35131 Padova — 5INFN, LNL, I-35020 Legnaro

Since the quadrupole moment depends sensitively on the specific orbitals which are occupied, it becomes an important quantity to verify the configuration of a superdeformed (SD) band. Mean lifetimes have been measured for SD bands of 145Gd with DSAM. High-spin states in 145Gd have been populated in the 114Cd(36S,5n) reaction at 182 MeV and studied with GASP at the LNL, Italy. Quadrupole moments of Q0 = 11.8 ± 0.8 eb and 13.5 ± 1.0 eb have been obtained for the yrast and first excited SD bands. The interpretation of these results requires a modification of the previous configuration assignments [1]. For the configuration assignment to the yrast SD band one should take into account the π [404]9/2 configuration and that the ν [514]9/2 orbital is not crossed by the ν 71 intruder orbital. Our new configuration assignments are π 61 π [404]9/2 ν [514]9/2 ν 7 0 for the yrast SD band and π 62 ν [642]5/2 ν 70 for the first excited SD band between the two crossings. (Supported by the Volkswagen Foundation and KBN).

[1] T. Rzaca-Urban et al., Z. Phys. B 356, 456 (1995)

100% | Mobil-Ansicht | English Version | Kontakt/Impressum/Datenschutz
DPG-Physik > DPG-Verhandlungen > 2000 > Dresden