Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
First study of highly radioactive lava-like sample from sub-reactor premise #305/2 inside Chernobyl “Shelter”. / Гуржий, Владислав Владимирович; Бураков, Борис Евгеньевич; Касаткин, Анатолий; Петров, Юрий Юрьевич; Орлова, Вера; Агаханов, Атали.
в: Journal of Nuclear Materials, Том 618, 156195, 29.09.2025.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - First study of highly radioactive lava-like sample from sub-reactor premise #305/2 inside Chernobyl “Shelter”
AU - Гуржий, Владислав Владимирович
AU - Бураков, Борис Евгеньевич
AU - Касаткин, Анатолий
AU - Петров, Юрий Юрьевич
AU - Орлова, Вера
AU - Агаханов, Атали
PY - 2025/9/29
Y1 - 2025/9/29
N2 - The basic phase and chemical composition of Chernobyl “lava” sample from the sub-reactor premise #305/2 that is located right below reactor base plate, and which is regarded as the primary melt source, are reported for the first time. The main substance of the “lava” is the X-ray amorphous glass-like material (in wt.%): Na2O 1.99, K2O 3.81, MgO 2.97, CaO 7.51, MnO 0.29, FeO 0.14, Al2O3 8.96, SiO2 64.15, TiO2 0.29, ZrO2 5.13, UO2 4.57, total 99.81). It contains small (5 to 30 μm) inclusions of technogenic analogues of natural minerals: high-uranium zircon, (Zr0.90U0.09Si1.01O4), U-bearing baddeleyite (Zr0.90U0.10O2) and Zr-bearing uraninite (U0.83Zr0.17O2). A technogenic analogue of vorlanite, (CaU6+O4), was found to be formed on the “lava” surface during storage at Khlopin Radium Institute under laboratory conditions, which shows the low chemical resistance of “lava” to environmental impact. The obtained results are highly important for assessing the consequences of the accident at the Fukushima Daiichi Nuclear Power Plant and modeling of the long-term environmental impact to the highly radioactive materials.
AB - The basic phase and chemical composition of Chernobyl “lava” sample from the sub-reactor premise #305/2 that is located right below reactor base plate, and which is regarded as the primary melt source, are reported for the first time. The main substance of the “lava” is the X-ray amorphous glass-like material (in wt.%): Na2O 1.99, K2O 3.81, MgO 2.97, CaO 7.51, MnO 0.29, FeO 0.14, Al2O3 8.96, SiO2 64.15, TiO2 0.29, ZrO2 5.13, UO2 4.57, total 99.81). It contains small (5 to 30 μm) inclusions of technogenic analogues of natural minerals: high-uranium zircon, (Zr0.90U0.09Si1.01O4), U-bearing baddeleyite (Zr0.90U0.10O2) and Zr-bearing uraninite (U0.83Zr0.17O2). A technogenic analogue of vorlanite, (CaU6+O4), was found to be formed on the “lava” surface during storage at Khlopin Radium Institute under laboratory conditions, which shows the low chemical resistance of “lava” to environmental impact. The obtained results are highly important for assessing the consequences of the accident at the Fukushima Daiichi Nuclear Power Plant and modeling of the long-term environmental impact to the highly radioactive materials.
KW - Baddeleyite
KW - Chernobyl “lava”
KW - Fukushima Daiichi NPP
KW - High-uranium zircon
KW - Uraninite
KW - Vorlanite
UR - https://www.mendeley.com/catalogue/647a781c-4862-379b-8bce-790648d529e1/
U2 - 10.1016/j.jnucmat.2025.156195
DO - 10.1016/j.jnucmat.2025.156195
M3 - Article
VL - 618
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
SN - 0022-3115
M1 - 156195
ER -
ID: 142836077