The flow of glasses and glass-liquid transition under electron irradiation
File(s)
Author(s)
Ojovan, Michael I
Type
Journal Article
Abstract
Recent discovery and investigation of the flow of glasses under the electron beams of transmission electron microscopes raised the question of eventual occurrence of such type effects in the vitrified highly radioactive nuclear waste (HLW). In connection to this, we analyse here the flow of glasses and glass–liquid transition in conditions of continuous electron irradiation such as under the e-beam of transmission electron microscopes (TEM) utilising the configuron (broken chemical bond) concept and configuron percolation theory (CPT) methods. It is shown that in such conditions, the fluidity of glasses always increases with a substantial decrease in activation energy of flow at low temperatures and that the main parameter that controls this behaviour is the dose rate of absorbed radiation in the glass. It is revealed that at high dose rates, the temperature of glass–liquid transition sharply drops, and the glass is fully fluidised. Numerical estimations show that the dose rates of TEM e-beams where the silicate glasses were fluidised are many orders of magnitude higher compared to the dose rates characteristic for currently vitrified HLW.
Date Issued
2023-08
Date Acceptance
2023-07-26
Citation
International Journal of Molecular Sciences, 2023, 24 (15)
ISSN
1422-0067
Publisher
MDPI AG
Journal / Book Title
International Journal of Molecular Sciences
Volume
24
Issue
15
Copyright Statement
© 2023 by the author. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
License URL
Identifier
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:001045562500001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=a2bf6146997ec60c407a63945d4e92bb
Subjects
activation energy
Biochemistry & Molecular Biology
Chemistry
Chemistry, Multidisciplinary
configuron
CREATION
dose rate
glass
glass transition
HIGH-LEVEL WASTE
IMMOBILIZATION
irradiation
Life Sciences & Biomedicine
percolation
Physical Sciences
Science & Technology
SILICON
STRESS
THERMODYNAMIC PARAMETERS
VISCOSITY
VITRIFICATION
Publication Status
Published
Article Number
12120
Date Publish Online
2023-07-28