Microscopic evidence for scission neutrons

Abdurrahman, Ibrahim; Kafker, Matthew; Bulgac, Aurel; Stetcu, Ionel

doi:10.1051/epjconf/202429208008

Title: Microscopic evidence for scission neutrons

Journal Article · 14 March 2024 · EPJ Web of Conferences (Online)

DOI: https://doi.org/10.1051/epjconf/202429208008 · OSTI ID:2426812

^[1]; Kafker, Matthew ^[2]; Bulgac, Aurel ^[2];

^[1]

Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Univ. of Washington, Seattle, WA (United States)

We discuss the neck rupture stage of fission and the emission of particles afterwards, two extremely rapid and highly non-equilibrium processes. Currently, the neck rupture cannot be directly probed by experiment, highlighting the importance of reliable theoretical predictions for this stage of fission. Time-dependent density functional theory (TDDFT) is used to simulate the spontaneous fission of ²⁵²Cf. In conjunction with statistical models, inputs from microscopic calculations can be used to make predictions for prompt neutron and gamma emission spectra, quantities which can be experimentally measured. Here we characterize the scission mechanism within TDDFT and estimate the number of scission neutrons and their kinetic energies.

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Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: 89233218CNA000001; AC05-00OR22725; FG02-97ER41014; NA0003841

OSTI ID:: 2426812

Report Number(s):: LA-UR--23-31053

Journal Information:: EPJ Web of Conferences (Online), Journal Name: EPJ Web of Conferences (Online) Vol. 292; ISSN 2100-014X

Publisher:: EDP SciencesCopyright Statement

Country of Publication:: United States

Language:: English

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