Isotopic search for spontaneous fission-produced ruthenium, silver and tellurium in uraninite

Hidaka, Hiroshi; Masuda, Akimasa

doi:10.1016/0009-2541(93)90172-f

Cited by 8 publications

(4 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As these phases are generally thought to be in equilibrium, these variations cannot be due to distinct presolar components. In terrestrial uraninites, fission produced 130 Te from U has been observed by Hidaka and Masuda (1993) and Goles and Anders (1962) have reported U concentrations of 10 and 3.5 ng/g U for sulfides of Toluca and Canyon Diablo, respectively. A uranium content of ϳ3%-7% would be needed, however, to account for a 130 Te excess of 1 unit, assuming that the sample is 4.6 Gyr old.…”

Section: Investigation Of Nucleosynthetic Te Isotope Anomaliesmentioning

confidence: 86%

Tellurium isotopic composition of the early solar system—A search for effects resulting from stellar nucleosynthesis, 126Sn decay, and mass-independent fractionation

Fehr

Rehkämper

Halliday

et al. 2005

Geochimica et Cosmochimica Acta

View full text Add to dashboard Cite

Section: Investigation Of Nucleosynthetic Te Isotope Anomaliesmentioning

confidence: 86%

Tellurium isotopic composition of the early solar system—A search for effects resulting from stellar nucleosynthesis, 126Sn decay, and mass-independent fractionation

Fehr

Rehkämper

Halliday

et al. 2005

Geochimica et Cosmochimica Acta

View full text Add to dashboard Cite

“…Spontaneous fission of uranium has been shown to produce Ru nuclides with relative abundances that are distinct from naturally occurring Ru 52 . Fissiogenic Ru primarily consists of 99 Ru (33.4 %), 101 Ru (28.9 %), 102 Ru (24.7 %) and 104 Ru (12.4 %) 53 .…”

Section: Methodsmentioning

confidence: 99%

Ruthenium isotope vestige of Earth’s pre-late-veneer mantle preserved in Archaean rocks

Fischer-Gödde

Elfers

Münker

et al. 2020

Nature

View full text Add to dashboard Cite

“…High‐sensitivity AMS has also been successfully adopted to measure spontaneous fission products (Fabryka‐Martin et al, 1989). Hidaka and Masuda (1993) successfully measured the spontaneous cumulative fission yields of Ru and Te in uraninite ore samples with TIMS, whereas Wieser and De Laeter (2004) have measured similar yields for Mo with TIMS. The measurement of the Mo fission yields were derived from 1.82 × 10 9 year old zircons, to enable the effect of the slow disintegration rate of 238 U spontaneous fission to be negated.…”

Section: Nuclear Fissionmentioning

confidence: 99%

“…Figure 4 shows the mass‐yield distribution curve for Mo and Ru, which is located on the low mass hump of nuclear fission. The abundances of the cumulative yields on the high mass side of the low‐mass hump decrease dramatically, to such an extent that Hidaka and Masuda (1993) were not able to detect any fission product Ag in uraninite ore, because Ag is located in the symmetric valley of the mass‐distribution curve for spontaneous fission, where the cumulative fission yields are essentially zero.…”

Section: Nuclear Fissionmentioning

confidence: 99%

Nuclear applications of inorganic mass spectrometry

Laeter

2009

Mass Spectrometry Reviews

View full text Add to dashboard Cite

There are several basic characteristics of mass spectrometry that are not always fully appreciated by the science community. These characteristics include the distinction between relative and absolute isotope abundances, and the influence of isotope fractionation on the accuracy of isotopic measurements. These characteristics can be illustrated in the field of nuclear physics with reference to the measurement of nuclear parameters, which involve the use of enriched isotopes, and to test models of s-, r-, and p-process nucleosynthesis. The power of isotope-dilution mass spectrometry (IDMS) to measure trace elements in primitive meteorites to produce accurate Solar System abundances has been essential to the development of nuclear astrophysics. The variety of mass spectrometric instrumentation used to measure the isotopic composition of elements has sometimes been accompanied by a lack of implementation of basic mass spectrometric protocols which are applicable to all instruments. These metrological protocols are especially important in atomic weight determinations, but must also be carefully observed in cases where the anomalies might be very small, such as in studies of the daughter products of extinct radionuclides to decipher events in the early history of the Solar System. There are occasions in which misleading conclusions have been drawn from isotopic data derived from mass spectrometers where such protocols have been ignored. It is important to choose the mass spectrometer instrument most appropriate to the proposed experiment. The importance of the integrative nature of mass spectrometric measurements has been demonstrated by experiments in which long, double beta decay and geochronological decay half-lives have been measured as an alternative to costly radioactive-counting experiments. This characteristic is also illustrated in the measurement of spontaneous fission yields, which have accumulated over long periods of time. Mass spectrometry is also a valuable tool in the determination of neutron capture cross-section measurements and the application of such determinations in Planetary Science.

show abstract

Isotopic search for spontaneous fission-produced ruthenium, silver and tellurium in uraninite

Cited by 8 publications

References 20 publications

Tellurium isotopic composition of the early solar system—A search for effects resulting from stellar nucleosynthesis, 126Sn decay, and mass-independent fractionation

Tellurium isotopic composition of the early solar system—A search for effects resulting from stellar nucleosynthesis, 126Sn decay, and mass-independent fractionation

Ruthenium isotope vestige of Earth’s pre-late-veneer mantle preserved in Archaean rocks

Nuclear applications of inorganic mass spectrometry

Contact Info

Product

Resources

About