32nd Nuclear Physics Workshop 2026

Session

Session 6

30 Sept 2026, 15:00

D-332

104. Shell and pairing energy corrections around scission

Krzysztof Pomorski (National Centre for Nuclear Research, Warsaw, Poland)

30/09/2026, 15:00

Invited lecture

We investigate the finite-temperature evolution of microscopic free-energy corrections in nuclear fission, focusing on pairing and shell effects near scission. The analysis is based on a finite-temperature BCS treatment combined with the Strutinsky method and is performed for representative deformation points along the fission path. Both pairing and shell contributions exhibit regular thermal...

103. Comparative Study of Langevin and Random Walk Models for Nuclear Fission in the Overdamped Regime

Aleksander Augustyn (National Centre for Nuclear Research (NCBJ), Poland)

30/09/2026, 15:30

Seminar

Stochastic transport models are a standard tool for describing fission fragment mass distributions, yet the multidimensional Langevin dynamics and the Metropolis random walk are rarely confronted directly within the same framework. We present such a comparison [1] for thermal neutron-induced fission of $^{229}$Th, $^{235}$U, $^{239}$Pu, $^{245}$Cm, $^{249}$Cf, and $^{255}$Fm. Both methods run...

111. Evolution of the fission fragment angular momentum

Katarzyna Mazurek (IFJ PAN)

30/09/2026, 15:50

Seminar

This study [1] explores the role of nucleon exchange for the generation of the fission fragment angular momenta. For a number of typical fission cases, samples of 10,000 shape evolutions are generated by Langevin simulation [2] and, subsequently, for each such evolution, the nucleon
exchange transport theory previously developed for damped nuclear reactions [3] is used to obtain the...

85. Microsocpic description of spontaneous fission for Fm isotopes

Kouhei Washiyama (The University of Osaka)

30/09/2026, 16:10

Seminar

Nuclear fission plays an important role in various phenomena such as the
-process nucleosynthesis. Spontaneous fission is an important subject for developing a microscopic theory of large-amplitude collective motions. The nuclear energy density functional (EDF) theory can be one such microscopic theory that provides a microscopic description of fission dynamics [1]. Recent EDF-based works on...

98. Microscopic Study of Nuclear Excitation and Fission

Zhipan Li (Southwest University)

30/09/2026, 17:10

Invited lecture

With the commissioning of next-generation radioactive ion beam facilities worldwide, nuclear structure physics has entered a new era of opportunities. The exploration of exotic nuclei far from stability has revealed a variety of unexpected phenomena, including octupole (pear-shaped) deformation, tetrahedral symmetry, and asymmetric fission in the sub-lead region, highlighting the remarkable...

67. Microscopic Multidimensional Description of Nuclear Fission Dynamics Based on Fourier Shape Parameterization

Li Zeyu (Southwest university, China)

30/09/2026, 17:40

Seminar

Nuclear fission is a nonequilibrium, large-amplitude collective process in which a nuclear many-body system evolves through a multidimensional collective space. The dynamics involve complex quantum fluctuations and correlation effects, while the underlying microscopic mechanism remains incompletely understood [2]. The time-dependent generator coordinate method (TDGCM) represents the nuclear...

89. Fission of (super)heavy nuclei and its hindrance in odd systems & K -isomers

Janusz Skalski (NCBJ)

30/09/2026, 18:10

Seminar

Heavy and superheavy nuclei show, besides a wide variation of spontaneous fission half-lives, a consistent fission hindrance of 3-5 orders of magnitude for odd-A species (no systematics exists for odd-odd species). There is also some evidence pointing to a similar hindrance in decays from high-K isomers.
In contrast to chemistry, a description of collective tunneling in nuclei lacks a...

115. Closing

30/09/2026, 18:30