Change search
ReferencesLink to record
Permanent link

Direct link
Gamma radiation induces hydrogen absorption by copper in water
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Materials Technology. (ENHETEN EGENSKAPER)ORCID iD: 0000-0002-0086-5536
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Applied Physical Chemistry.
Show others and affiliations
2016 (English)In: Scientific Reports, ISSN 2045-2322, E-ISSN 2045-2322, Vol. 6, 24234Article in journal (Refereed) PublishedText
Abstract [en]

One of the most intricate issues of nuclear power is the long-term safety of repositories for radioactive waste. These repositories can have an impact on future generations for a period of time orders of magnitude longer than any known civilization. Several countries have considered copper as an outer corrosion barrier for canisters containing spent nuclear fuel. Among the many processes that must be considered in the safety assessments, radiation induced processes constitute a key-component. Here we show that copper metal immersed in water uptakes considerable amounts of hydrogen when exposed to γ-radiation. Additionally we show that the amount of hydrogen absorbed by copper depends on the total dose of radiation. At a dose of 69 kGy the uptake of hydrogen by metallic copper is 7 orders of magnitude higher than when the absorption is driven by H2(g) at a pressure of 1 atm in a non-irradiated dry system. Moreover, irradiation of copper in water causes corrosion of the metal and the formation of a variety of surface cavities, nanoparticle deposits, and islands of needle-shaped crystals. Hence, radiation enhanced uptake of hydrogen by spent nuclear fuel encapsulating materials should be taken into account in the safety assessments of nuclear waste repositories.

Place, publisher, year, edition, pages
Nature Publishing Group, 2016. Vol. 6, 24234
National Category
Manufacturing, Surface and Joining Technology Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-187004DOI: 10.1038/srep24234ISI: 000374226400001ScopusID: 2-s2.0-84964306889OAI: oai:DiVA.org:kth-187004DiVA: diva2:930161
Note

QC 20160523

Available from: 2016-05-23 Created: 2016-05-16 Last updated: 2016-05-23Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Lousada, Claudio MiguelSoroka, Inna L.Korzhavyi, Pavel A.Jonsson, Mats
By organisation
Materials TechnologyApplied Physical Chemistry
In the same journal
Scientific Reports
Manufacturing, Surface and Joining TechnologyPhysical Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 31 hits
ReferencesLink to record
Permanent link

Direct link