Isotopic anomalies of xenon from natural nuclear reactor

Shukolyukov, Yu. A.; Minh, Dang Vu

doi:10.1007/bf01118637

Cited by 2 publications

(4 citation statements)

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“…A comparison of the isotopic composition of the trapped xenon in the Apollo 12 fines 12001, ba-2 calculated from the xenon isotope data reported by EBERHARDT et al 55 and that of TAKAOKAI's primitive xenon Table 8. A comparison of the isotopic composition of the trapped xenon in the Luna 16 regolith 1608-3, 26 calculated from the xenon isotope data reported by SHUKOLYUKOV et al 56 and that of TAKAOKAI's primitive xenon Table 9. A comparison of the isotopic composition of the trapped xenon in the Luna 20 regolith 2004-3, 9 calculated from the xenon isotope data reported by SHUKOLYUKOV et al 56 and that of TAKAOKAI's primitive xenon Table 10.…”

Section: Discussionmentioning

confidence: 99%

“…A comparison of the isotopic composition of the trapped xenon in the Luna 16 regolith 1608-3, 26 calculated from the xenon isotope data reported by SHUKOLYUKOV et al 56 and that of TAKAOKAI's primitive xenon Table 9. A comparison of the isotopic composition of the trapped xenon in the Luna 20 regolith 2004-3, 9 calculated from the xenon isotope data reported by SHUKOLYUKOV et al 56 and that of TAKAOKAI's primitive xenon Table 10. Plutonium -244 fission xenon (136fXe) and primordial xenon in lunar fines and regoliths Table 16.…”

Section: Discussionmentioning

confidence: 99%

“…Table 9. A comparison of the isotopic composition of the trapped xenon in the Luna 20 regolith 2004-3, 9 calculated from the xenon isotope data reported by SHUKOLYUKOV et al 56 and that of TAKAOKA 1 's primitive xenon Table 10. Plutonium -244 fission xenon (136fXe) and primordial xenon in lunar fines and regoliths Table 14 shows a comparison of the contents of 244pu fission xenon (136fXe) and the isotopic compositions of the trapped xenon found in several samples of lunar breccias, which have been similarly calculated from the xenon isotope data reported by several investigators.…”

Section: Plutonium-244 Fission Xenon and Primordial Xenonmentioning

confidence: 99%

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Plutonium-244 fission xenon and primordial xenon in lunar samples and meteorites

Kuroda

Myers

1998

J Radioanal Nucl Chem

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Xenon found in lunar samples is a binary mixture of 244pu fission xenon and a trapped xenon, whose isotopic composition often show-s a striking resemblance to that of TAKAOKA's 1 primitive xenon. The decay product of 129I is conspicuously absent in lunar samples and this may be attributed to the facts that (a) the half-life of 129I is much shorter than that of 244pu, and (b) the separation of xenon from plutonium may take place easily, since the former is a gaseous element, while the latter is a refractory element. The separation of xenon from iodine may not tale place easily, however, since the former is a gaseous element, while the latter is a volatile element. The isotopic compositions of the trapped xenon released from ordinary chondrites and achondrites resemble that of TAKA 9 primitive xenon, which has been mass-fractionated in such a manner that the heavier isotopes are systematically enriched relative to the lighter isotopes.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Plutonium-244 Fission Xenon and Primordial Xenonmentioning

confidence: 99%

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Plutonium-244 fission xenon and primordial xenon in lunar samples and meteorites

Kuroda

Myers

1998

J Radioanal Nucl Chem

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“…It could be formed as a result of fission fragments contribution input of the two basic sources of synthesis of parent nuclei for them. Xe ratio for the xenon released from products of spontaneous and neutron-induced (I) fission of actinide nuclides and matter of different objects of the Solar system: carbonaceous chondrites (straight crosses) [10], ordinary chondrites (inclined crosses), iron meteorites (open triangles on the inset) [11] , achondrites (closed squares) [11,12], nanodiamonds (open cirles) [13], Earth's mantle gases (open squares) [14,15,16], Earth atmosphere (closed triangle) [15], Solar wind (close diamond) [14], ancient zircons (closed cirles) [17], Oklo natural nuclear reactor [18] Xe can be a result of the greater contribution of fission fragments of superheavy nuclides. It is fixed in carbonaceous and ordinary chondrites, iron meteorites, the Solar wind as well as in deepness gases and in the atmosphere of the Earth.…”

Section: Contributions Of Fission Fragments To Xenon Isotopesmentioning

confidence: 99%

Fission fragments of actinide and superheavy nuclides in primordial material of the Solar system and the problem of their origin

Goncharov¹

2010

Proceedings of International Symposium on Nuclear Astrophysics - Nuclei in the Cosmos - IX — PoS(NIC-IX)

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Results of an estimation of the possible contribution of fission products into the abundance of atomic masses for transiron elements and xenon isotopes in different objects of the Solar system are presented in the work. A recent systematization of the mass distribution of fission fragments for actinide nuclides and compound nuclei of superheavy elements at low excitation energies has allowed to reveal the humps on the mass distribution curves of Solar system matter that are analogous to the mass fragment distributions at asymmetric fission for nuclei of thorium and uranium, and superheavy elements (Z ≈ 114 and 126). These results are in accordance with the ratios of heavy xenon isotopes, found out in products of fragmental fission. Two basic sources of fission fragments in transiron area are revealed for matter of the Solar system. The first of them, connected with the fission of superheavy progenitors and characterized by Dy, Pt and Te enrichment (A = 164, 195 and 130), is typical for carbonaceous chondrites and the Solar photosphere. The second one, connected with Th and U fission and having the maxima of Sr, Zr and Ba abundances (A = 88, 94 and 138) is observed in the crusts of the Earth and the Moon. In the suggested scenario the basic phase of r-process occurred after a synthesis of actinide and superheavy nuclides and was the reason of local modifications in the humps of their fission fragments distributions which coincide with the "waiting points" of r -process.

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Isotopic anomalies of xenon from natural nuclear reactor

Cited by 2 publications

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Plutonium-244 fission xenon and primordial xenon in lunar samples and meteorites

Plutonium-244 fission xenon and primordial xenon in lunar samples and meteorites

Fission fragments of actinide and superheavy nuclides in primordial material of the Solar system and the problem of their origin

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