This segment contains parameters that quantify Giant Resonances, experi­mental 7-strength functions and methods for calculating 7-emission in sta­tistical model codes.

The experimental Giant Dipole Resonance parameters were provided by the Chinese group, as represented by Lorentzian fits to the total photo­neutron cross sections for 102 nuclides ranging from 51V to 239Pu as compiled by Dietrich and Berman [13]. Additional data for 12C, 14N, 16O, 27Al and 28Si were estimated by Liu Jianfeng and Su Zongdi in 1995 [14].

New compilations of calculated GDR widths and energies for about 6000 nuclei with 14 < Z < 110 lying between the proton and the neutron driplines have been provided by Goriely. The table gives the predicted GDR energies [15] with a renormalized np-interaction of strength derived from a least-square fit to the experimental GDR energies [16]. The expression for the shell-dependent GDR width is taken from [17] using the newly — determined GDR energies and the ETFSI shell correction energies. Such predictions include the shell-dependent GDR broadening due to the cou­pling between the dipole oscillations and the quadrupole surface vibrations.

Theoretical predictions of the E1-strength functions for 3317 nuclei with 8<Z<84 lying between the proton and the neutron drip-lines have been sup­plied by Goriely [18, 19]. These strength functions were determined within the QRPA model based on the SLy4 Skyrme force. The ground state was consistently calculated within the Hartree-Fock+BCS model based on the same SLy4 force. QRPA equations were solved in the configuration space so as to exhaust the energy weighted sum rule. All QRPA calculations are performed in the spherical approximation. A folding procedure is applied to the QRPA strength distribution to take the damping of the collective motion into account. In the case of deformed nuclei, a phenomenological splitting of the QRPA resonance strength is performed in the folding procedure. The resulting E1-strength function is found to be in close agreement with photo­absorption data as well as the available experimental E1 strength at low energies.

A theory-supported practical approach, based on a micro-canonical de­scription of initial states (modified Lorentzian (MLO)) for the calculation of the dipole radiative strength function, was compared with experimental data as well as with the SLO end EGLO models, and included in the library. The strength functions for other multi-polarities will be carried over from RIPL-1.