Berlin 2005 – wissenschaftliches Programm

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HK: Physik der Hadronen und Kerne

HK 38: Kernphysik/Spektroskopie

HK 38.7: Vortrag

Mittwoch, 9. März 2005, 15:45–16:00, TU MA004

Dipole-strength distributions below the giant dipole resonance in ⁹²Mo, ⁹⁸Mo and ¹⁰⁰Mo^⋆ — •G. Rusev¹, R. Schwengner¹, A. Wagner¹, K.D. Schilling¹, F. Dönau¹, S. Frauendorf^1,2, M. Erhard¹, A.R. Junghans¹, K. Kosev¹, N. Nankov¹, and E. Grosse^1,3 — ¹Institut für Kern- und Hadronenphysik, Forschungszentrum Rossendorf, Dresden, Germany — ²University of Notre Dame, Notre Dame, USA — ³Technische Universität Dresden, Dresden, Germany

Photon-scattering experiments with bremsstrahlung were performed on ⁹²Mo, ⁹⁸Mo and ¹⁰⁰Mo at electron energies up to 13.2 MeV. The measurements were carried out at the new bremsstrahlung facility of the Rossendorf ELBE accelerator. The highest end-point energies are above the neutron-separation energies of the three isotopes and allow the determination of the dipole strengths below the giant dipole resonance. The decay to intermediate levels was estimated with the constant-temperature level-density model and the dipole-strength distributions were reconstructed. The obtained results are completed with data from neutron-scattering experiments [1] and compared with predictions of RPA calculations.
[1] H. Beil et al., Nucl. Phys. A227 (1974) 427
^⋆ Supported by the DFG under contracts Do 466/1-1 and Do 466/1-2.