A new database (Digital Chart) of main GDR parameters

E1moments from a coherent set of measured photoneutron cross sections

“…We find for 58 Ni α D = 2.17 ± 0.05 fm 3 /e 2 with the evaluation of Ref. [74] up to 30 MeV and 2.45 ± 0.09 fm 3 /e 2 with the measurements of Ref. [73] up to 40 MeV.…”

“…To test further the possibility that the sudden increase of the 209 Bi polarizability with respect to 208 Pb may be linked to the neutron or proton shell closures, we also estimated the polarizability of 58 Ni to compare it with our determination for 59 Co. Based on experimental data in Refs. [73,74], we applied the same methodology to estimate the polarizability (as detailed in Sec. III), though without including the chargedparticle emission component.…”

Reference database for photon strength functions

“…Data can be found in Refs. [40,219] for NRF measurements, [199,[220][221][222] for Oslo data, [70,72] for Ratio method data, [20] for (p,p ) data, [83][84][85][222][223][224] for photodata and [60][61][62] for ARC and DRC data. Data correspond to the total dipole PSFs, except ARC and DRC data which yield E1, M1 and E2 PSFs separately.…”

“…cross sections were determined through direct neutron detection and counting of residual γ-ray activity. Additionally, various methods were used to obtain cross sections with protons in the outgoing reaction channels which are needed for the determination of the total photoabsorption cross section [81][82][83]. Photoneutron cross sections have also been measured at GDR peak energies and below in experiments based on laser-induced Compton backscattered γ-rays (e.g.…”

Measurement of the Beam-Normal Single-Spin Asymmetry for Elastic Electron Scattering from $^{12}$C and $^{27}$Al

“…For each target, the yield contribution from the GDR was simulated using the Goldhaber-Teller model [72] with energy and width parameters taken from photoabsorption data [73,74]. The simulated yield fraction f GDR for 27 Al was 0.045 ± 0.022% and for 12 C it was 0.077 ± 0.038% (see Table III and Table IV).…”