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.
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.
| Original language | English |
|---|---|
| Article number | 00005 |
| Number of pages | 5 |
| Journal | EPJ Web of Conferences |
| Volume | 368 |
| DOIs | |
| Publication status | Published - 2026 |
| Event | 9th Heavy Ion Accelerator Symposium - Canberra, Australia Duration: 7 Sept 2025 → 12 Sept 2025 https://hias.anu.edu.au/2025/ |
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