Plutonium-244 Fission Xenon in the Most Primitive Meteorites

Abstract

The plutonium-244/xenon-136 ages of the Murchison, Murray and Orgueil meteorites have been calculated from the existing xenon isotope data and the uranium contents. The CI carbonaceous chondrite Orgueil, which is considered to be among the most primitive -in the sense of the least altered -sample of the solar system known to man, appears to have started to retain its xenon more than 5,000 million years ago, when the ratio of ^"Pu to 238 U in the solar system was as high as (0.5 ±0.1) (atom/atom) and the CM carbonaceous chondrites Murchison and Murray started to retain their xenon about 4,940 million years ago, when the 244 Pu to 238 U ratio was about 0.17 (atom/ atom).

Origin and Evolution of Life Constraints on the Solar Model

“…a) The precursor star exploded axially ~5 Gyr ago, based on 244 Pu and 238 U age dating [46], probably driven by neutron repulsion. b) Neutron repulsion causes continuous emission of neutrons from the pulsar.…”

The Sun is a plasma diffuser that sorts atoms by mass

“…Combined Pu/Xe and U/Pb age dating showed that the 244 Pu was produced !5 Gyr ago in a supernova explosion [25]. Age dating with 26 Al/ 26 Mg showed that some refractory meteorite grains started to form within !…”

“…Fig 2.Fresh, radioactive debris of a supernova that exploded here ! 5 Gyr ago[25] started to form refractory grains in the solar system within ! 0.001-0.002 Gyr[26], before elements and isotopes from the different SN layers had completely mixed[7,8,27,28].…”