Science and Technology Journal of BgNS, VOL. 11, No. 1, JUNE 2007
ISSN 1310-8727
Title:
NUCLEAR STRUCTURE AND NUCLEAR ASTROPHYSICS
EXPERIMENTS AT THE SUPERCONDUCTING ELECTRON
ACCELERATOR ELBE.
Authors:
R. Schwengner, G. Rusev, F. Dönau, M. Erhard, E. Grosse, A. R. Junghans,
K. Kosev, C. Nair, N. Nankov, K. D. Schiling, A. Wagnerl
Abstract:
The superconducting electron accelerator ELBE at Rossendorf delivers
electron beams of energies up to 20 MeV with average currents up to 1 mA for
experiments using photon-induced reactions. The bremsstrahlung facility installed at this
accelerator and the experimental area were designed such that the production of neutrons
and the scattering of photons from surrounding materials are strongly reduced. We have
investigated the nuclides 92Mo, 98Mo and 100Mo in photon-scattering experiments at
electron energies from 6 to 13 MeV. Several hundred dipole transitions were observed in
each of the nuclides. The experimental dipole-strength distributions of the nuclei are
compared with calculations on the basis of a quasiparticle-random-phase approximation
for deformed nuclei. Statistical approaches to the correction of level feeding and decay
branches are presented. We have studied 92Mo(γ,n), 92Mo(γ,p) and 92Mo(γ,α) reactions at
various electron energies via photoactivation experiments. The deduced activation yields
are compared with theoretical predictions.
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