Humidity effects on neutron irradiated beryllium
Nuclear Materials and Energy, ISSN: 2352-1791, Vol: 35, Page: 101454
2023
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Most Recent News
New Nuclear Materials and Energy Research Has Been Reported by Researchers at University of Latvia (Humidity effects on neutron irradiated beryllium)
2023 JUN 08 (NewsRx) -- By a News Reporter-Staff News Editor at Energy Daily News -- New study results on nuclear materials and energy have
Article Description
This study focuses on neutron-irradiated beryllium interactions with air of differing humidity, simulating water cooled fusion reactor malfunction. Beryllium in the form of ∼ 1 mm ∅ pebbles has been used in the study. Both non-irradiated and neutron-irradiated pebbles were thermally treated and studied using thermogravimetric/differential thermal analysis in dry airflow with relative humidity (RH) < 5 % and humid > 90% RH. Surface structure and composition was investigated with scanning electron microscopy (SEM) and energy dispersion X-ray spectrometry (EDX). Tritium release was monitored using a tritium monitor. Results show that elevated RH coupled with neutron irradiation damage on beryllium yields the largest mass increase of 180% (in relation to the initial mass) compared to non-irradiated Be treated in RH < 5% which resulted in 3 % mass increase. SEM and EDX revealed a substantial number of cracks as well as the formation of irregular shape micro-/nanoparticles of BeO. Tritium release took place at temperatures above ∼ 1040 K, reaching a peak after 1263 K. Overall tritium inventory was estimated to be up to 1.08∙10 17 T atoms/g.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S2352179123000935; http://dx.doi.org/10.1016/j.nme.2023.101454; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85160513793&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S2352179123000935; https://dx.doi.org/10.1016/j.nme.2023.101454
Elsevier BV
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