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Radiative strength functions in 93-98Mo

M. Guttormsen·R. Chankova·U. Agvaanluvsan·E. Algin·L. A. Bernstein·F. Ingebretsen·T. Loennroth·S. Messelt·G. E. Mitchell·J. Rekstad·A. Schiller·S. Siem·A. C. Sunde·A. Voinov·S. Odegaard
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Abstract

Radiative strength functions (RSFs) in 93-98Mo have been extracted using the (3He,alpha gamma) and (3He,3He' gamma) reactions. The RSFs are U-shaped as function of gamma energy with a minimum at around E_gamma=3 MeV. The minimum values increase with neutron number due to the increase in the low-energy tail of the giant electric dipole resonance with nuclear deformation. The unexpected strong increase in strength below E_gamma=3 MeV, here called soft pole, is established for all 93-98Mo isotopes. The soft pole is present at all initial excitation energies in the 5-8 MeV region.

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M. Guttormsen, R. Chankova, U. Agvaanluvsan, E. Algin, L. A. Bernstein, F. Ingebretsen, T. Loennroth, S. Messelt, G. E. Mitchell, J. Rekstad, A. Schiller, S. Siem, A. C. Sunde, A. Voinov, S. Odegaard. 2004-11-26. Radiative strength functions in 93-98Mo. https://doi.org/10.1103/physrevc.71.044307

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