Fine structure of prompt neutron multiplicity distribution in spontaneous fission of superheavy nucleus 256Rf
Publications, 30 January 2023
We offer to your attention a preprint “Fine structure of the prompt neutron multiplicity distribution in the spontaneous fission of superheavy nucleus 256Rf” E7-2022-49 published by the JINR Publishing Department. The authors are A. V. Isaev et al.
An experimental study of 256Rf spontaneous fission in fusion reaction of 50Ti + 208Pb was performed using the velocity filter SHELS (FLNR JINR). The average number of neutrons v̄ = 4.30 ± 0.17 and variance σ2v = 3.2 from the prompt neutron multiplicity distribution were obtained. The α-decay branching ratio bα = 0.003+0.005-0.003 and the half T1/2 = (6.7 ± 0.2) ms of the isotope were determined. For the first time, the neutron detector system allowed authors to extend investigation of the prompt neutron multiplicity to the superheavy element region.
The investigation has been performed at the Flerov Laboratory of Nuclear Reactions. Submitted to the journal “Physics Letters B”.