Working Paper Hypothesis Version 3 This version is not peer-reviewed

A Feasible Mechanism for Appearance of Post-Post-Fe Elements in Solar System

Version 1 : Received: 25 September 2018 / Approved: 25 September 2018 / Online: 25 September 2018 (08:47:51 CEST)
Version 2 : Received: 26 November 2018 / Approved: 28 November 2018 / Online: 28 November 2018 (04:57:01 CET)
Version 3 : Received: 14 April 2019 / Approved: 16 April 2019 / Online: 16 April 2019 (11:44:32 CEST)
Version 4 : Received: 21 July 2019 / Approved: 23 July 2019 / Online: 23 July 2019 (11:17:56 CEST)

A peer-reviewed article of this Preprint also exists.

Tito, E.P.; Pavlov, V.I. Hypothesis about Enrichment of Solar System. Physics 2020, 2, 213-276. Tito, E.P.; Pavlov, V.I. Hypothesis about Enrichment of Solar System. Physics 2020, 2, 213-276.


Conventional models do not fully explain composition of the solar system—for example, the presence of such elements as certain post-post-$Fe$-nuclei remains not yet understood. We propose a mechanism which can explain appearance of non-native elements in the solar system. The hypothesis involves an explosive nuclear-fission-type event within the inner part of the solar system that resulted from the system’s path-crossing with a traveling-from-afar compact stellar object—a “giant nuclear drop” capable of phase-transitioning into unstable nuclear-fog state, which was triggered by the encounter. After the multitude of spontaneous reaction cascades and variety of nuclei transformations (such as nuclei fragmentation, fission, fusion, $n$-, $p$-, $\alpha$-, $\gamma$-capture, and various decays), the “debris” enriched the solar system and led to the eventual formation of the terrestrial planets that pre-event had not existed. Such scenario offers a possible explanation for the planets’ inner position and compositional differences within the predominantly hydrogen-helium rest of the solar system.


hypothesis; collision; heavy post-post-Fe elements; solar system


Physical Sciences, Astronomy and Astrophysics

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