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HK: Physik der Hadronen und Kerne

HK 10: Poster Session: Nuclear Physics/Spectroscopy

HK 10.2: Poster

Tuesday, March 12, 2002, 10:30–12:45, Foyer Chemie

Electronic timing technique and transition probabilities in ¹³⁶Nd — •Oliver Möller¹, A. Dewald¹, A. Fitzler¹, I. Schneider¹, G. Kemper¹, K.O. Zell¹, P. von Brentano¹, J. Jolie¹, R. Krücken², D. Bazzacco³, and C. Rossi-Alvarez³ — ¹Institut für Kernphysik, Universität zu Köln, Köln, Germany — ²AWWNSLab, Yale University, CT, 06520 USA — ³Dip. di Fisicia, Universita Padova, Italy

The beam pulsing system at the Cologne FN Tandem accelerator has been used to measure lifetimes of excited states in ⁴⁶V, ⁵⁴Co and ¹³⁶Nd in the nanosecond and sub-nanosecond range. A new program for the data analysis was developed that reproduces the time spectra of the transitions of interest by using the measured time spectrum of a γ-line of similar energy as a prompt reference. In addition lifetimes of excited states of ¹³⁶Nd, measured with EUROBALL spectrometer at Legnaro using the recoil distance method (RDM), will be presented. The deduced B(E2)-values including the B(E2;10⁺ → 8⁺) value obtained with the electronic timing technique will be used to discuss the interaction of the ground state band with two s-bands. *supported by BMBF; Project No. 06 OK 958