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Dresden 2000 – scientific programme

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HK: Physik der Hadronen und Kerne

HK 16: Postersitzung / Kernphysik

HK 16.12: Poster

Thursday, March 23, 2000, 10:15–12:45, B 69

Lifetimes measurements of high-spin states in the transitional nucleus 101Ag — •E. Galindo1, A. Jungclaus1, D. Kast1, K.P. Lieb1, A. Müller1, M. Górska2,3, H. Grawe2, G. de Angelis4, C. Fahlander4, M. de Poli4, A. Dewald5, R. Peusquens5, H. Tiesler5, P.G. Bizzeti6, and P. Sona61Universität Göttingen — 2GSI, Darmstadt — 3University of Warsaw — 4INFN Legnaro — 5Universität zu Köln — 6INFN Firenze

The transitional nucleus 101Ag has an interesting structure, which shows a typical single-particle behavior for the low-excited states and collectivity for the high-spin states [1]. In order to extend the information about this nucleus the reaction 58Ni(50Cr,α3p) at 205 MeV was studied by means of the gamma-spectrometer GASP at the INFN in Legnaro. The RDDS technique was used at a total of 12 flight distances ranging from 12 µm to 7 mm [2] and the DDCM method was used for the analysis of the γ-γ data. Lifetimes in the range 0.6 - 12 ps were measured showing a clear domain of multi-particle shell modell structure up to spin 23/2 ℏ at both parities.

[1] B. Crowell et al. Phys. Rev. C45 (1992) 1564.

[2] D. Kast et al. Eur. Phys. J. A 3 (1998) 115.

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