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Non- identical thermochemical behavior of 234U-and 238U- isotopes in metamict britholite. / Skriplev, Mikhail I.; Bogdanov, Roman V.; Schwink, Lawrence R.

In: Applied Radiation and Isotopes, Vol. 119, 2017, p. 1-5.

Research output: Contribution to journal › Article

Harvard

Skriplev, MI, Bogdanov, RV & Schwink, LR 2017, 'Non- identical thermochemical behavior of 234U-and 238U- isotopes in metamict britholite', Applied Radiation and Isotopes, vol. 119, pp. 1-5. https://doi.org/10.1016/j.apradiso.2016.08.023

APA

Skriplev, M. I., Bogdanov, R. V., & Schwink, L. R. (2017). Non- identical thermochemical behavior of 234U-and 238U- isotopes in metamict britholite. Applied Radiation and Isotopes, 119, 1-5. https://doi.org/10.1016/j.apradiso.2016.08.023

Vancouver

Skriplev MI, Bogdanov RV, Schwink LR. Non- identical thermochemical behavior of 234U-and 238U- isotopes in metamict britholite. Applied Radiation and Isotopes. 2017;119:1-5. https://doi.org/10.1016/j.apradiso.2016.08.023

Author

Skriplev, Mikhail I. ; Bogdanov, Roman V. ; Schwink, Lawrence R. / Non- identical thermochemical behavior of 234U-and 238U- isotopes in metamict britholite. In: Applied Radiation and Isotopes. 2017 ; Vol. 119. pp. 1-5.

BibTeX

@article{457f22cd41084129b6a6724d485eba6d,
title = "Non- identical thermochemical behavior of 234U-and 238U- isotopes in metamict britholite",
abstract = "A radiochemical analysis of the valence state of uranium isotopes in minerals involves isolation of the U(IV) and U(VI) valence forms and determination of the radioactivity of the 234U and 238U isotopes in each fraction. If the nuclear decay of the uranium in the minerals is accompanied by a redox process, the distribution of the 234U isotope in the U(IV) and U(VI) forms will differ from that of the 238U isotope: oxidation leads to enrichment of the U(VI) fraction with the radiogenic 234U isotope; reduction facilitates enrichment of the U(IV) fraction with 234U. If the mineral is heated to 600–700 °C before the radiochemical analysis, then an equilibrium activity ratio (AR) for both valences. The question arises: What are the processes that bring this about? The authors of this research studied changes of the AR in the U(IV) and U(VI) fractions after isochronous thermal annealing.",
keywords = "Natural analogues Uranium isotopes Thermochemistry Metamict minerals Britholite Alpha-decay",
author = "Skriplev, {Mikhail I.} and Bogdanov, {Roman V.} and Schwink, {Lawrence R.}",
year = "2017",
doi = "10.1016/j.apradiso.2016.08.023",
language = "English",
volume = "119",
pages = "1--5",
journal = "Applied Radiation and Isotopes",
issn = "0969-8043",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Non- identical thermochemical behavior of 234U-and 238U- isotopes in metamict britholite

AU - Skriplev, Mikhail I.

AU - Bogdanov, Roman V.

AU - Schwink, Lawrence R.

PY - 2017

Y1 - 2017

N2 - A radiochemical analysis of the valence state of uranium isotopes in minerals involves isolation of the U(IV) and U(VI) valence forms and determination of the radioactivity of the 234U and 238U isotopes in each fraction. If the nuclear decay of the uranium in the minerals is accompanied by a redox process, the distribution of the 234U isotope in the U(IV) and U(VI) forms will differ from that of the 238U isotope: oxidation leads to enrichment of the U(VI) fraction with the radiogenic 234U isotope; reduction facilitates enrichment of the U(IV) fraction with 234U. If the mineral is heated to 600–700 °C before the radiochemical analysis, then an equilibrium activity ratio (AR) for both valences. The question arises: What are the processes that bring this about? The authors of this research studied changes of the AR in the U(IV) and U(VI) fractions after isochronous thermal annealing.

AB - A radiochemical analysis of the valence state of uranium isotopes in minerals involves isolation of the U(IV) and U(VI) valence forms and determination of the radioactivity of the 234U and 238U isotopes in each fraction. If the nuclear decay of the uranium in the minerals is accompanied by a redox process, the distribution of the 234U isotope in the U(IV) and U(VI) forms will differ from that of the 238U isotope: oxidation leads to enrichment of the U(VI) fraction with the radiogenic 234U isotope; reduction facilitates enrichment of the U(IV) fraction with 234U. If the mineral is heated to 600–700 °C before the radiochemical analysis, then an equilibrium activity ratio (AR) for both valences. The question arises: What are the processes that bring this about? The authors of this research studied changes of the AR in the U(IV) and U(VI) fractions after isochronous thermal annealing.

KW - Natural analogues Uranium isotopes Thermochemistry Metamict minerals Britholite Alpha-decay

U2 - 10.1016/j.apradiso.2016.08.023

DO - 10.1016/j.apradiso.2016.08.023

M3 - Article

VL - 119

SP - 1

EP - 5

JO - Applied Radiation and Isotopes

JF - Applied Radiation and Isotopes

SN - 0969-8043

ER -

ID: 7733824