{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.topic/1","content_sha256":"acc4cbf5f37287cab4093ec2a754871bdd87d1d35fcee19d619eefe0ec2bcccf","created":"2026-10-03T07:17:52Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":[],"salt":"0f14843dbc165b64cd7a8eb3e36a46ae7b77c18cb6853d3cc25f55f4619d5a44","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"topic"},"content":{"external_id":"nuc.fission-theory","field":"nuc","n":"1","review_cite":"N. Schunck and D. Regnier, Theory of nuclear fission, Progress in Particle and Nuclear Physics, 2022","review_link":"https://doi.org/10.1016/j.ppnp.2022.103963","review_verified":"true","summary":"In fission a heavy nucleus stretches, forms a neck and snaps into two fragments, and physicists still cannot compute this process from the forces between protons and neutrons alone. The open questions concern how the fragments end up spinning, how the released energy is split between them, and how high the energy barrier to fission is for nuclei never made in the lab.","title":"Microscopic theory of nuclear fission","topic_ref":null,"why":"Fission powers reactors, decides the fate of the heaviest elements and of nuclei in neutron-star mergers, and is the hardest test of nuclear many-body dynamics."},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"4682ec98f6efef769b56a4880afd87dd00cb0bc4ad4f0a7af1b11de1483f7592","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"2393abef419ef4d12f235b95b9e7a0bf53f8b5450b9c058f87510a3cb7c1ed45","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"WKPE2b1_c-fWAyFMdpcH032IfyL01lQqessX82t4i-glGzUdtSVt5C5EtxWUEm3ZA9u50L3AVtGzRpX9jO3mBw"},"schema":"pubphys.envelope/1"},"record_hash":"4682ec98f6efef769b56a4880afd87dd00cb0bc4ad4f0a7af1b11de1483f7592","leaf_index":284}