Nuclear structure data obtained by the (n_th,2γ) reaction

The determination of nuclear structure parameters such as gamma transitions, level scheme, density and radiative strength functions is one the most important tasks in low-energy physics. two-step cascades method based on detection coincidences following neutron capture, ie. (n,2γ) reaction has been proven to give spectroscopic data concerning function. This allows for study dynamics interaction inter-transition between Fermi-and Bose-states nucleus near binding energy. There an essential difference these intranuclear processes from those classical high-temperature superfluidity, which determined by a shape investigated nucleus, nucleon parity it, existence nucleons different types (protons neutrons) etc. Two-step technique so far successfully applied 45 nuclei mass region 28<A<200. Brief description will be included here with examples recent research