Physico-Chemical Properties of Chernobyl Lava and Their Destruction Products | Sciact - CRIS-system of Boreskov Institute of Catalysis

Physico-Chemical Properties of Chernobyl Lava and Their Destruction Products Full article

Journal

Progress in Nuclear Energy
ISSN: 0149-1970

Output data

Year: 2016, Volume: 92, Pages: 104-118 Pages count : 15 DOI: 10.1016/j.pnucene.2016.07.001

Tags

Glass; Ceramics; Nuclear accident; Chernobyl; Corium; Zircon

Authors

Shiryaev Andrey A. ^1,2,3 , Vlasova Irina E. ² , Burakov Boris E. ⁴ , Ogorodnikov Boris I. ⁵ , Yapaskurt Vasily O. ⁶ , Averin Alexey A. ¹ , Pakhnevich Alexey V. ⁷ , Zubavichus Yan V. ⁸

Affiliations

1	Institute of Physical Chemistry and Electrochemistry RAS
2	Department of Chemistry, Lomonosov Moscow State University
3	Institute of Ore Geology, Petrography, Mineralogy and Geochemistry RAS
4	V.G. Khlopin Radium Institute
5	Karpov Physical Chemistry Institute
6	Department of Geology, Moscow State University
7	Paleontological Institute RAS
8	NRC“Kurchatov Institute”

The paper commemorates 30th anniversary of severe nuclear accident at the 4th Unit of Chernobyl NPP. Results of the investigation of radioactive glassy lava-like materials formed as a result of the accident at their current state are presented. Complementary analytical methods: vibrational spectroscopy, XAFS, SEM, EBSD, X-ray tomography, provide new information about structure of the Chernobyl lava matrix and inclusions. Most of these techniques are applied to the lava samples for the first time and allow to derive consistent model of the lava and to resolve some of existing controversies. The glassy matrix of the lava is an anhydrous depolimerised metaluminous glass with signs of devitrification. Principal inclusions are (U,Zr)O2−x and (Zr,U)O2−x solid solutions with tetragonal and monoclinic structures, UO2 and U-rich zircon. Cracks around large inclusions are observed; some of them could be caused by volume expansion during tetragonal to monoclinic transition in zirconia. The lava accumulations are characterized by different stability against spontaneous destruction, with the pumice-like lava being the least stable, generating radioactive aerosols and particles with sizes up to 250 μm.

Shiryaev A.A. , Vlasova I.E. , Burakov B.E. , Ogorodnikov B.I. , Yapaskurt V.O. , Averin A.A. , Pakhnevich A.V. , Zubavichus Y.V.
Physico-Chemical Properties of Chernobyl Lava and Their Destruction Products
Progress in Nuclear Energy. 2016. V.92. P.104-118. DOI: 10.1016/j.pnucene.2016.07.001 WOS Scopus РИНЦ AN OpenAlex

Submitted:	Jan 24, 2016
Accepted:	Jul 1, 2016
Published online:	Jul 22, 2016
Published print:	Sep 1, 2016

Web of science:	WOS:000384786400012
Scopus:	2-s2.0-84979645197
Elibrary:	27100808
Chemical Abstracts:	2016:1233111
OpenAlex:	W2504192982

DB	Citing
Web of science	31
Scopus	32
OpenAlex	34