Evolution of the pygmy dipole resonance in Sn isotopes

H. K. Toft, A. C. Larsen, A. Bürger +7

Nuclear level density and $\gamma$-ray strength functions of ${}^{121,122}$Sn below the neutron separation energy are extracted with the Oslo method using the (${}^3$He,${}^3$He${}^{\prime }\gamma$) an…