Spectroscopy of the Decay Properties of Transfermium Isotopes in Dubna

Data is presented on the radioactive decay of isotopes 256Rf and 249, 250No synthesized in complete fusion reactions 50Ti + 208Pb, and 48Ca + 204Pb, with subsequent evaporation of neutrons from the excited state of the composite nucleus. Experiments use high-intensity beams of accelerated heavy ions 48Ca and 50Ti from the U-400 cyclotron at the Flerov Nuclear Reactions Laboratory of the Joint Institute for Nuclear Research and the SHELS kinematic separator.