Abstract
This report describes a series of experiments aimed on investigating characteristics of spontaneous fission of nuclei in the exotic region of short-lived neutron-deficient isotopes with Z ≥ 100. Unique data on the decay properties of neutron-deficient isotopes 244,246Fm, 250No, 252No, 254Rf and 256Rf produced in the complete fusion reactions with accelerated heavy ions 40Ar + 206,208Pb → 246,248Fm*, 48Ca + 204,206Pb → 252,254No*, 50Ti + 206,208Pb →256,258Rf* were obtained in experiments at the VASSILISSA (SHELS) separator combined with a neutron detector.
Highlights
Fission of heavy nuclei – both induced and spontaneous – is one of the most important fields of nuclear physics
Unique data on the decay properties of neutron-deficient isotopes 244,246Fm, 250No, 252No, 254Rf and 256Rf produced in the complete fusion reactions with accelerated heavy ions 40Ar + 206,208Pb → 246,248Fm*, 48Ca + 204,206Pb → 252,254No*, 50Ti + 206,208Pb → 256,258Rf* were obtained in experiments at the VASSILISSA (SHELS) separator combined with a neutron detector
Such an approach to experiment performance has been implemented at the electrostatic recoil separator VASSILISSA [10] used to study production cross-sections and radioactive decay properties of the nuclei - evaporation residues (ER), observed in complete fusion reactions with heavy ions accelerated in the U400 cyclotron of FLNR, JINR
Summary
Fission of heavy nuclei – both induced and spontaneous – is one of the most important fields of nuclear physics. The total kinetic energy (TKE) of fragments has been measured fairly accurately, and the mass and energy distributions of fragments have been built for several isotopes [1,2,3]. Measurements of such an important characteristic as the average number of prompt SF neutrons have been made only for long-lived isotopes in the interval from uranium to californium [4,5], for a number of neutron-rich isotopes of fermium [5,6], and for 252No [7,8], 259Md and 260Md [9]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
