Luminescence of X-ray induced radiation defects in modified lithium orthosilicate pebbles with additions of titanium dioxide
Journal Title: Energetika - Year 2017, Vol 0, Issue 0
Abstract
Modified lithium orthosilicate (Li4SiO4) pebbles with additions of titanium dioxide (TiO2) are designed as a possible tritium breeder ceramic for the helium cooled pebble bed (HCPB) test blanket module. Additions of TiO2 were chosen to enhance mechanical properties of the tritium breeder pebbles. The formation of radiation defects (RD) in the modified Li4SiO4 pebbles with a different content of TiO2 was studied by X-ray induced luminescence (XRL) technique. After XRL measurements the accumulated RD were also analyzed by thermally stimulated luminescence (TSL) and electron spin resonance (ESR) spectrometry. XRL spectra consist of several bands with maxima at around 430, 490, 690, 700 and 800 nm. The XRL band with a peak at 490 nm could be associated with intrinsic defects in Li4SiO4 matrix whereas all the other maxima at lower photon energies are the result of the addition of TiO2.
Authors and Affiliations
Janis Cipa, Gunta Kizane, Arnis Supe, Aleksejs Zolotarjovs, Arturs Zarins, Larisa Baumane
Keywords
Related Articles
- EP ID EP260807
- DOI 10.6001/energetika.v63i3.3562
- Views 117
- Downloads 0
Performance characteristics of single-stage biohythane production by immobilized anaerobic bacteria
Biohythane produced via dark fermentation is much greener than hythane that is generated using natural gas. Biohythane production using a single-stage system has potential to increase the economic viability since it requ...
The combined heat and mass transit processes of water droplets in biofuel technologies
The number of thermal technologies is based on water droplets heat and mass transfer processes. In this paper droplets heat transfer and phase transformations were modelled in the context of water spraying in humid flue...
Dielectric properties of alumina ceramics for fusion applications
The insulating materials for radio frequency (RF) windows and different antenna supports for heating systems and some diagnostics are still an unresolved issue in future fusion machines such as DEMO. Alumina ceramic (Al2...
Cybersecurity of critical infrastructures such as nuclear facilities
In the last years, cybersecurity has become a crucial essential element within the security framework of critical infrastructures such as process industry, railways, hospitals and also nuclear facilities. The types of th...
Monte Carlo simulation of district heating system short-term operation in electricity markets
Energy generation in district heating (DH) systems is usually done in combined heat and power (CHP) units which can efficiently produce both useful heat and electric power. There can also exist heat only boilers, electri...