Münster 2002 – wissenschaftliches Programm

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HK: Physik der Hadronen und Kerne

HK 10: Poster Session: Nuclear Physics/Spectroscopy

HK 10.12: Poster

Dienstag, 12. März 2002, 10:30–12:45, Foyer Chemie

Photon scattering on ⁹⁸Mo ^⋆ — •G. Rusev^1,2, R. Schwengner¹, F. Dönau¹, L. Käubler¹, S. Mallion¹, K.D. Schilling¹, A. Wagner¹, H. von Garrel³, U. Kneißl³, C. Kohstall³, M. Kreutz³, H.H. Pitz³, M. Scheck³, and F. Stedile³ — ¹Inst. für Kern- und Hadronenphysik, FZ Rossendorf — ²INRNE Sofia — ³IfS, Universität Stuttgart

We present results of the first photon-scattering experiment on the nuclide ⁹⁸Mo. This experiment was carried out at the bremsstrahlung facility of the Stuttgart Dynamitron accelerator at an electron energy of 3.8 MeV. Photons scattered from a ⁹⁸Mo target with a mass of 1998 mg, enriched to 98.55%, were measured with three HPGe detectors placed at 90^∘, 127^∘ and 150^∘, respectively, to the incident photon beam. We identified five states with J = 1 in the energy range from 2.8 to 3.6 MeV. A state at about 2.8 MeV is a candidate for the [2⁺ ⊗ 3⁻]_1⁻ two-phonon excitation while states with 3.2 to 3.6 MeV may be considered as J^π= 1⁺ states. An analogous experiment was carried out for the nuclide ¹⁰⁰Mo and is also being analysed.
^⋆ Supported by the DFG under contract no. Do 466/1-1.