Low-lying electric and magnetic dipole strengths in Pb

Shizuma, Toshiyuki*; Minato, Futoshi   ; Omer, M.*  ; Hayakawa, Takehito*; Ogaki, Hideaki*; Miyamoto, Shuji*

Low-lying dipole transitions in Pb were measured via nuclear photon scattering using a quasi-monochromatic, linearly polarized photon beam. The electric () and magnetic () dipole strengths were extracted for excitation energies up to 6.8 MeV. The present (,) results, combined with (,) data from the literature, were used to investigate the and photoabsorption cross sections near the neutron separation energy by comparison with predictions of the particle-vibration coupling on top of the quasi-particle random phase approximation (PVC+QRPA).