The release of the majority of radionuclides from spent nuclear fuel under permanent
disposal conditions will be controlled by the rate of dissolution of the UO2 fuel matrix. In this …

The storage of spent nuclear fuels for long periods of time in geological repositories is one
proposed solution to the stewardship of legacy, current and future nuclear waste. Recent …

By 1911, the atomic weight of uranium had been refined to 238.5 (Gmelin, vol. A2, 1980a).
The natural isotope 235 U was discovered in 1935 by mass spectrometry. The artificial …

The valence state of neptunium, one of the most important radionuclides of concern for long-
term emplacement of nuclear waste, primarily defines its geochemical reactions and …

The corrosion of directly disposed spent nuclear fuel by contact with intruding groundwater
will alter the physical and chemical properties of this material. Secondary phases which …

Oxidative dissolution of spent UO 2 fuel in vapor and dripping groundwater at 90° C occurs
via general corrosion at fragment surfaces. Dissolution along fuel-grain boundaries is also …

Alteration of spent nuclear fuel in a geological repository under oxidizing conditions is likely
to result in abundant uranyl compounds. Incorporation of radionuclides into the uranyl …

The speciation of U and Pu in soil and concrete from Rocky Flats and in particles from soils
from Chernobyl, Hanford, Los Alamos, and McGuire Air Force Base and bottom sediments …

Two polymorphs of Cs2 (UO2) 2 (MoO4) 3 have been synthesized by hydrothermal (α-
phase) and high-temperature (β-phase) routes. Both were characterized by single-crystal X …

The extensive studies of used fuel dissolution inside a failed nuclear waste container have
been reviewed. The primary controlling factor is the redox condition set at the fuel surface by …