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Köln 2004 – scientific programme

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HK: Physik der Hadronen und Kerne

HK 19: Nuclear Structure/Spectroscopy III

HK 19.9: Talk

Tuesday, March 9, 2004, 18:00–18:15, D

Photon scattering from 92Mo, 98Mo and 100Mo up to the neutron-separation energy — •G. Rusev1, R. Schwengner1, A. Wagner1, K.D. Schilling1, M. Erhard1, F. Dönau1, A.R. Junghans1, K. Kosev1, and E. Grosse1,21Institut für Kern- und Hadronenphysik, Forschungszentrum Rossendorf, Dresden, Germany — 2Technische Universität Dresden, Dresden, Germany

We present the results of photon-scattering experiments on the nuclei 92Mo, 98Mo and 100Mo up to the neutron-separation energy. The experiments were carried out at the new bremsstrahlung facility of the Rossendorf ELBE accelerator at electron energies of 9 and 12.6 MeV. Samples of about 3 g of highly enriched 92Mo, 98Mo and 100Mo, respectively, were used in the nuclear-resonance-fluorescence experiments. Scattered photons were measured with four escape-suppressed HPGe detectors placed two by two at 90 and 127, respectively, relative to the incident photon beam.
The dependence of the observed dipole-strength distributions on the neutron number of the Mo isotopes is discussed. The experimental results are compared with predictions of RPA calculations.
Supported by the DFG under contracts Do 466/1-1 and Do 466/1-2.

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