| Issue |
EPJ Web Conf.
Volume 368, 2026
9th Heavy Ion Accelerator Symposium (HIAS 2025)
|
|
|---|---|---|
| Article Number | 00005 | |
| Number of page(s) | 5 | |
| DOI | https://doi.org/10.1051/epjconf/202636800005 | |
| Published online | 13 May 2026 | |
https://doi.org/10.1051/epjconf/202636800005
A new fission mode in 220Ra
Department of Nuclear Physics and Accelerator Applications, The Australian National University, Canberra, ACT 2601, Australia
* e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published online: 13 May 2026
Abstract
Shell-driven fission modes result from the quantum mechanical many-body dynamics underlying nuclear fission. Their regions of influence, as well as the nuclear shapes they induce at scission, is a rapidly developing area of research. Evidence has emerged of novel fission modes in pre-actinide nuclei associated with Z≈36 and Z≈44. We present evidence of the Z=44 mode persisting up to 220Ra (Z=88). Being an example of bimodal symmetric fission, this result necessitated two-dimensional Gaussian fitting and a statistically rigorous data subsampling analysis to separate this novel mode from the liquid drop mode.
Present address: Laboratory of Ion Beam Physics, ETH Zürich, HPK G 31, Otto-Stern-Weg 5, 8093 Zürich, Switzerland
© The Authors, published by EDP Sciences, 2026
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.