When a heavy atomic nucleus fissions, the resulting fragments are observed to emerge spinning [1]; this phenomenon has been an outstanding mystery in nuclear physics for a long time. The internal generation of around 6-7 units of angular momentum in each fragment is particularly puzzling for systems which start with zero, or almost zero, spin.
Over the last 5 decades much experimental and theoretical effort has been devoted to understanding the fission mechanism and questions such as angular momentum generation, energy partition between fragments and neutron emission. In this presentation I will review this body of research and look particularly in detail at current efforts, including very recent experimental results [2,3] and related theoretical works [4,5,6] which attempt to better understand this fascinating phenomenon. This research is not only important for the fundamental understanding and theoretical description of fission, but also has consequences for the γ-ray heating problem in nuclear reactors, for the study of the structure of neutron-rich isotopes, and for the synthesis and stability of super-heavy elements.
[1] J. B. Wilhelmy, Phys. Rev. C 5 2041 (1972)
[2] J.N. Wilson et al., Nature 590 566 (2021)
[3] M. Travar et al. Phys. Lett. B 817 136293 (2021)
[4] J. Randrup and R. Vogt, Phys. Rev. Lett. 127 062502 (2021)
[5] P. Marevic et al., Phys. Rev. C104, L021601 (2021)
[6] I. Stetcu et al., Phys. Rev. Lett. 127 222502 (2021)
Zoom meeting invitation
Heure : 24 janv. 2022 04:00 PM Paris
https://univ-lyon1-fr.zoom.us/j/84890525005?pwd=emZxK3J6ekJxbENhTkJiYVBUUEtjUT09 <https://univ-lyon1-fr.zoom.us/j/84890525005?pwd=emZxK3J6ekJxbENhTkJiYVBUUEtjUT09>
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Organizers: F. Arleo (SUBATECH Nantes), P. Ascher (CENBG Bordeaux), O. Dorvaux (IPHC Strasbourg), J. Dudouet (IP2I Lyon), A. Fantina (GANIL Caen), G. Henning (IPHC Strasbourg), A. Korichi (IJCLab Orsay), O. Lopez (LPC Caen), J. Margueron (IP2I Lyon), G. Quemener (LPC Caen), O. Sorlin (GANIL Caen), B. Sulignano (IRFU Saclay), J.-C. Thomas (GANIL Caen), L. Thulliez (IRFU Saclay), A. Uras (IP2I Lyon), M. Vandebrouck (IRFU Saclay), P. Van Hove (IPHC Strasbourg), G. Verde (L2IT Toulouse).
https://univ-lyon1-fr.zoom.us/j/84890525005?pwd=em...
