Structure of the prompt neutron multiplicity distribution in the spontaneous fission of 256Rf

Andrey V. Isaev, R. S. Mukhin, A.V. Andreev, Zouhair Asfari, Maxim L. Chelnokov, Victor I. Chepigin, H. M. Devaraja, O. Dorvaux, B. Gall, Karl Hauschild

14 more authors

I. N. Izosimov, А. А. Кузнецова, Araceli Lopez-Martens, O. N. Malyshev, A. G. Popeko, Yu. A. Popov, A. Rahmatinejad, Bekzat Sailaubekov, T. M. Shneidman, Evgeny A. Sokol, A. I. Svirikhin, M. S. Tezekbayeva, Alexander V. Yeremin, N. I. Zamyatin

2023

Full text Open access: Gold Metadata (CSL-JSON)

DOI 10.1016/j.physletb.2023.138008

Data confidence 70 medium

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Abstract

An experimental study of 256Rf spontaneous fission following the fusion reaction of 50Ti+208Pb was performed using the velocity filter SHELS of the Flerov laboratory at JINR. The average number of neutrons of ν‾=4.30±0.17 and variance of σν2=3.2 from the prompt neutron multiplicity distribution were obtained. The alpha decay branching ratio of bα=0.003−0.003+0.005 and the half-life of T1/2=(6.7±0.2) ms of the isotope were determined. For the first time, our neutron detector system allowed us to extend investigation of the prompt neutron multiplicity study to the superheavy element region.