Extracting Experimental Level Densities in A ~ 207 – 208 Nuclei

摘要

The energy dependent nuclear level densities of 205–208Pb nuclei below the nuclear binding energies were determined by using the Oslo method. The experimental primary γ-ray per excitation energy bin have been extracted for scattering and transfer reactions. The Axel-Brink hypothesis was then used to separate out level density and γ-strength function from the primary γ spectra. The influence of closed shells is quite obvious in the measured level densities.