31st International Seminar on Interaction of Neutrons with Nuclei: Fundamental Interactions & Neutrons, Nuclear Structure, Ultracold Neutrons, Related Topics (ISINN-31)

Light Ions Accompanied Break-Up of the Medium Heavy Fission Isomers

Not scheduled

1m

V6 Hallway (4th floor)

Poster session Poster Session

Speaker

Dr Dmitry Kamanin (JINR)

Description

In series of the photo-fission reactions, namely, ^{235, 238}U(γ, f), ²³²Th(γ, f), ²⁴²Pu(γ, f) we have found that some part of the fission fragments (FFs) are presumably born in the state of the fission isomer with the yield Y ≈ 10^–3/binary fission and with the lifetime τ_isom > 400 nsec [1, 2]. A binary break-up of such fragments was observed when they pass through a solid-state foil. The effect takes place also for the FFs from ²⁵²Cf(sf). In the proposed presentation we discuss the mode of the break-up with forming light ions in the mass range (3-20) u as one of the resultant decay products. The link of such events with known polar emission of the light charged particles is analyzed.

References
1. D.V. Kamanin et al., Bulletin of the Russian Academy of Sciences: Physics, V. 87 (2023), p. 1238.
2. D.V. Kamanin et al., Journal of Physics: Conference Series, V. 2586 (2023) 012043.