The effect of [gamma]-radiation in Li sub(4)SiO sub(4) ceramic breeder blankets

Lithium orthosilicate (Li sub(4)SiO sub(4)) is considered one of the best candidates for the solid breeder blanket system (BBs) of future thermonuclear reactors. During reactor operation it will be bombarded by neutrons and gamma radiation which may alter its composition and properties, affecting it...

Full description

Saved in:
Bibliographic Details
Published in:Fusion engineering and design 2015-01, Vol.90, p.73-78
Main Authors: Carella, E, Hernandez, T
Format: Article
Language:English
Subjects:
Ceramic tools
Ceramics
Electrochemical impedance spectroscopy
Irradiation
Lithium
Reactors
Resistivity
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Lithium orthosilicate (Li sub(4)SiO sub(4)) is considered one of the best candidates for the solid breeder blanket system (BBs) of future thermonuclear reactors. During reactor operation it will be bombarded by neutrons and gamma radiation which may alter its composition and properties, affecting its shielding role. The electrochemical impedance spectroscopy (EIS) is here used as a non-destructive tool for monitoring the electrical bulk conductivity of Li sub(4)SiO sub(4) ceramic after different ionizing damaging treatments. The compound fabricated in our laboratories, was irradiated by a super(60)Co in the Nayade-facility (CIEMAT-Spain). Several studies with slight experimental variations were realized and here presented to understand the dynamic of the charge carriers' movement and the role of intrinsic and extrinsic defects on the electrical properties of this candidate ceramic.
ISSN:0920-3796
DOI:10.1016/j.fusengdes.2014.11.010