Nanostructures formed in pure quartz glass under irradiation in the reactor core

Ибрагимова, Э. М.; Mussaeva, M. A.; Kalanov, M. U.

doi:10.1016/j.radphyschem.2013.07.024

Cited by 2 publications

(1 citation statement)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(α-SiO 2 ) is a simple binary oxide and predominantly a covalent-bond material. As such, its simple structure, unique within the silicates family, has led to an abundant literature on the effects of varied irradiation, e.g., (Frondel 1945;Wittels and Sherrill 1954;Primak 1958;Mayer and Lecomte 1960;Weissmann and Nakajima 1963;Grasse et al 1981;de Goer 1986;Inui et al 1990;Bonnet et al 1994;Harbsmeier and Boise 1998;Lebedev et al 2007;Ibragimova et al 2014;Krishnan et al 2017a). "The displacement of atoms in quartz causes a reduction of long-range periodicity at the expense of forming rearranged and distorted polyhedra in order to maintain the short-range bonding requirements."…”

Section: Rive Susceptibility Of Silicatesmentioning

confidence: 99%

Rock-Forming Minerals Radiation-Induced Volumetric Expansion – Revisiting Literature Data

Pape

Alsaid

Giorla

2018

ACT

View full text Add to dashboard Cite

Neutron radiation-induced volumetric expansion (RIVE) of concrete aggregate is recognized as a major degradation mechanism causing extensive damage to concrete constituents (Hilsdorf et al. 1978;Seeberger and Hilsdorf 1982;. Nearly 400 RIVE data obtained in test-reactors on varied rock-forming minerals were collected by Denisov et al. (2012). These data were input into the Oak Ridge National Laboratory (ORNL) irradiated minerals, aggregates and concrete (IMAC) database and were reanalyzed in order to develop a general empirical model for minerals RIVE and interpret the susceptibility of silicates toward expansion. The empirical models best regression coefficient (r 2 ≈ 0.95) is obtained by combining two different modeling techniques: (1) an interpolation-like model based on the relative distance to existing data points, and, (2) a nonlinear regression model assuming varied mathematical forms to describe RIVE as a function of the neutron fluence 3 and the average irradiation temperature. The susceptibility to develop irradiation-induced expansion greatly varies with the nature of minerals. Silicates, i.e., [SiO 4 ] 4-bearing minerals show a wide range of maximum RIVEs, from a few percents to what appears as a bounding value of 17.8% for quartz. The maximum RIVE of varied silicates appears to be governed, macroscopically, by three parameters: (1) Primarily, the dimensionality of silicate polymerization (DOSP), (2) the relative number of Si-O bond per unit cell, and, (3) the relative bonding energy (RBE) of the unit cell.

show abstract