Abstract:

Experimental data got at SHELS kinematic separator and GABRIELA detecting system are presented here. Alpha-, beta-, gamma- spectroscopy methods were applied to study radioactive decay properties of No isotopes got as a result of several neutron evaporation by compound nucleus in the reactions of ⁴⁸Ca accelerated ion beam and ^204,206,208Pb target and in ²²Ne with ²³⁸U asymmetric reaction. No isotopes are of special interest because it gives an opportunity to study how radioactive decay properties change above N=152 neutron subshell. This gives an opportunity to get data to understand the behavior of heavy element isotopes above N=162 neutron subshell. Data for characteristics of ²⁵⁰No isotope spontaneous fission from ground and isomeric states were got. Properties of ²⁴⁹No new isotope and its daughter products were described.

(based on the materials of the candidate’s thesis)