Chemical evolution via beta decay: a case study in strontium-90
MetadataShow full item record
Using 90Sr as a representative isotope, we present a framework for understanding beta decay within the solid state. We quantify three key physical and chemical principles, namely momentum-induced recoil during the decay event, defect creation due to physical displacement, and chemical evolution over time. A fourth effect, that of electronic excitation, is also discussed, but this is difficult to quantify and is strongly material dependent. The analysis is presented for the specific cases of SrTiO3 and SrH2. By comparing the recoil energy with available threshold displacement data we show that in many beta-decay situations defects such as Frenkel pairs will not be created during decay as the energy transfer is too low. This observation leads to the concept of chemical evolution over time, which we quantify using density functional theory. Using a combination of Bader analysis, phonon calculations and cohesive energy calculations, we show that beta decay leads to counter-intuitive behaviour that has implications for nuclear waste storage and novel materials design.
NOTICE: This is the author’s version of a work in which changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication.
Showing items related by title, author, creator and subject.
Temperature Dependence of Chemical and Microbiological Chloramine Decay in Bulk Waters of Distribution SystemSathasivan, Arumugam; Chiang, Jacob; Nolan, P. (2009)Chloramine decays in distribution system due to wall and bulk water reactions. In bulk water, the decay could either be due to chemical or microbiological reactions. Without such distinction it is not possible to model ...
Sassi, Michel; Carter, Damien; Uberuaga, B.; Stanek, C.; Marks, Nigel (2013)Background: Significant experimental effort has been applied to study radioactive beta-decay in biological systems. Atomic-scale knowledge of this transmutation process is lacking due to the absence of computer simulations. ...
Tayeb, M.; Dai, X.; Corcoran, E.; Kelly, David (2014)A study to evaluate conditions affecting the determination of 90Sr/90Y activities in liquid samples by the triple-to-double coincidence ratio (TDCR) Cherenkov counting technique was conducted. The Cherenkov radiation ...