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 σ²_v = 3.2 from the prompt neutron multiplicity distribution were obtained. The α-decay branching ratio b_α = 0.003^+0.005_-0.003 and the half T_1/2 = (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”.

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