Köln 2004 – wissenschaftliches Programm
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HK: Physik der Hadronen und Kerne
HK 10: Poster Session: Nuclear Structure/Spectroscopy
HK 10.5: Poster
Dienstag, 9. März 2004, 13:30–15:30, Foyer
Check for Chirality of Nuclear Rotation in 134Pr via Lifetime Measurements — •D. Tonev1, G. de Angelis1, P. Petkov2,3, A. Dewald3, A. Gadea1, D. Balabanski4, P. Bednarczyk5, F. Camera6, A. Fitzler3, K. Jessen3, N. Margenian1, O. Möller3, A. Paleni6, C. Petrache4, K.O. Zell3, Y.H. Zhang7, and S. Frauendorf8,9 — 1INFN, LNL, Legnaro, Italy — 2BAS, INRNE, Sofia, Bulgaria — 3IKP, Universität zu Köln, Köln, Germany — 4DMF, University of Camerino, Camerino, Italy — 5IReS, Strasbourg, France — 6DF, University of Milano, Milano, Italy — 7IMP, CAS, Lanzhou, P.R. China — 8DP, University of Notre Dame, Notre Dame, USA — 9IKH, RCR, Dresden, Germany
Chirality in nuclear rotation is a novel collective feature predicted for odd-odd nuclei from angular momentum coupling considerations [1]. Electromagnetic transition probabilities are crucial experimental observables for the understanding of nuclear structure and for checking the reliability of the theoretical models. The lifetimes of the levels of the doublet bands in 134Pr were measured by means of the recoil-distance Doppler-shift and Doppler-shift attenuation methods using the multi-detector array Euroball. The excited states of the 134Pr were populated via the reaction 119Sn(19F,4n)134Pr at a beam energy of 88 MeV. The determined transition probabilities are compared with the theoretical predictions of different models.
[1] S. Frauendorf and J. Meng, Nucl. Phys. A 619 (1997) 131.