Study on the 147Sm energy-level scheme

For the first time the 147Sm energy level scheme excited during inelastic neutron scattering is studied. The γ quanta spectrum from a target positioned on a fast neutron reactor beam is measured. The Sm mass in the Sm2O3 target is 10g. Enrichment in 147Sm is 99.5%. The Ge(Li) detector resolution is 3 keV at Esub(γ)=1.3 MeV. In the measured γ spectrum 112 lines of 147Sm, 84 of them for the first time, are distinguished up to 2.5 MeV. The 147Sm γ-transition scheme and nonsituated γ-transitions from 147Sm(n, n'γ) reaction, experimental level population and its relation to the theoretical one calcUlated at the given value of the Isup(π) level are presented. For comparing absolute values of level population with theoretical ones the γ spectrum from a target made of a mixture of 147Sm and