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For many spin-0 target nuclei neutron capture measurements yield informationon level densities at the neutron separation energy. Also the average photonwidth has been determined from capture data as well as Maxwellian average crosssections for the energy range of unresolved resonances. Thus it is challengingto use this data set for a test of phenomenological prescriptions for theprediction of radiative processes. An important ingredient for respectivecalculations is the photon strength function for which a parameterization wasproposed using a fit to giant dipole resonance shapes on the basis oftheoretically determined ground state deformations including triaxiality.Deviations from spherical and axial symmetry also influence level densities andit is suggested to use a combined parameterization for both, level density andphoton strength. The formulae presented give a good description of the data forlow spin capture into 124 nuclei with 72<A<244 and only very few globalparameters have to be adjusted when the predetermined information on groundstate shapes of the nuclei involved is accounted for.

Impact of Triaxiality on the Emission and Absorption of Neutrons and Gamma Rays in Heavy Nuclei