DPG Phi
Verhandlungen
Verhandlungen
DPG

Köln 2004 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe

HK: Physik der Hadronen und Kerne

HK 10: Poster Session: Nuclear Structure/Spectroscopy

HK 10.24: Poster

Dienstag, 9. März 2004, 13:30–15:30, Foyer

Signature inversion in the semidecoupled π h9/2 ⊗ ν i13/2 band of the odd-odd nucleus 172Lu — •Ts. Venkova1,2, R.M. Lieder1, W. Gast1, D. Bazzacco3, G. de Angelis4, E.O. Lieder1, H.M. Jäger1, L. Mihailescu1, R. Menegazzo3, S. Lunardi3, C. Rossi Alvarez3, C. Ur3, D.R. Napoli4, W. Urban5, and T. Rzaca-Urban51IKP, FZ Jülich, D-52425 Jülich — 2INRNE, BAS, BG-1784 Sofia — 3INFN, Sezione di Padova, I-35131 Padova — 4INFN, LNL, I-35020 Legnaro — 5IEP, Univ. Warsaw, PL-00-681 Warsaw

High-spin states in the odd-odd nucleus 172Lu have been populated in a 170Er(7Li,5n) reaction at 51 MeV and the emitted γ-radiation was detected with the GASP array. A new semidecoupled band with the proposed π 1/2[541] ⊗ ν 7/2+[633] configuration has been established exhibiting a signature inversion up to the highest observed spin, since contrary to expectation, the states with the signature α=0 lie lower in energy than the α=1 levels.

From a systematics of the inversion spin, at which the signature splitting reverts to the normal order, for π h9/2 ⊗ ν i13/2 bands of odd-odd nuclei with 69 ≤ Z ≤ 79 and 93 ≤ N ≤ 105 it was found that the inversion spin is fairly constant for nuclei with the same NZ, that for an isotopic chain the inversion spin increases with increasing neutron number N and that for an isotonic chain, the inversion point decreases with increasing proton number Z.

The work was partly supported by the DFG under the grants 436 BUL 17/7/02 and 17/6/03 and by the EU contracts ERB-FMGEST-980110 and HPRI-CT-1999-00083.

100% | Mobil-Ansicht | English Version | Kontakt/Impressum/Datenschutz
DPG-Physik > DPG-Verhandlungen > 2004 > Köln