HVEM-Tandem and EELS study of radiation damage in zirconolite

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dc.contributor.authorSmith, KLen_AU
dc.contributor.authorZaluzec, NJen_AU
dc.contributor.authorLumpkin, GRen_AU
dc.date.accessioned2023-01-13T01:05:12Zen_AU
dc.date.available2023-01-13T01:05:12Zen_AU
dc.date.issued1997-08-10en_AU
dc.date.statistics2022-10-24en_AU
dc.descriptionThis paper was originally produced for the US Department of Energy and is freely available on their website here: https://www.osti.gov/biblio/537351. It was subsequently presented at the conference Microscopy & Microanalysis '97 and published in the Proceedings Issue Vol 3, S2 of Microscopy & Microanalysis.en_AU
dc.description.abstractZirconolite (CaZrTi2O7) is the major host phase for actinides in Synroc, a promising waste form for the immobilization of high-level radioactive waste. The effect of radiation damage on the structure and durability of zirconolite are important to predictive modeling of zirconolite`s behavior in the repository environment and risk assessment. In this study, radiation damage effects in zirconolite were investigated by irradiating samples with 1.5 MeV Kr+ ions using the HVEM-Tandem at Argonne National Laboratory (ANL) and energy loss electron spectroscopy (EELS). The HVEM-Tandem consists of a modified AEI high voltage transmission electron microscope interfaced to a 2 MV tandem ion accelerator. EELS spectra were collected using a Philips 420 TEM, operated at 120 kV, fitted with a Gatan Model 607 Serial EELS. EELS data were recorded at resolutions of {approximately} 1.0 eV and at a dispersion of about {approximately} 0.25 eV. Selected area diffraction patterns (SADs) of individual grains of various zirconolites were monitored as a function of dose to establish the critical dose for amorphization (D{sub c}). The authors found that (1) Dc(zirconolite) is independent of the atomic weight of dopants in zirconolite and the mean atomic weight of the sample and that (2) the Bragg reflections in SAD patterns which persist to the highest doses are firstly those resulting from the fluorite sublattice and secondly the four (110)-type reflections which lie on the innermost of the two diffuse rings representative of amorphous zirconolite. © 1997 Microscopy Society of America 1997en_AU
dc.description.sponsorshipUS Department of Energyen_AU
dc.identifier.citationSmith, K. L., Zaluzec, N. J., & Lumpkin, G. R. (1997). HVEM-tandem and EELS study of radiation damage in zirconolite. Paper presented to the Microscopy & Microanalysis '97, Microscopy Society of America 55th Annual Meeting, Microbeam Analysis Society 31st Annual Meeting, Histochemical Society 48th Annual Meeting, Cleveland, Ohio, August 10-14, 1997. In Microscopy and Microanalysis, 3(S2), 773-774. doi:10.1017/S1431927600010758en_AU
dc.identifier.conferenceenddate14 August 1997en_AU
dc.identifier.conferencenameMicroscopy & Microanalysis '97, Microscopy Society of America 55th Annual Meeting, Microbeam Analysis Society 31st Annual Meeting, Histochemical Society 48th Annual Meetingen_AU
dc.identifier.conferenceplaceCleveland, Ohioen_AU
dc.identifier.conferencestartdate10 August 1997en_AU
dc.identifier.issn1435-8115en_AU
dc.identifier.issueS2en_AU
dc.identifier.journaltitleMicroscopy and Microanalysisen_AU
dc.identifier.pagination773-774en_AU
dc.identifier.urihttps://doi.org/10.1017/S1431927600010758en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/14335en_AU
dc.identifier.volume3en_AU
dc.language.isoenen_AU
dc.publisherCambridge University Pressen_AU
dc.subjectZirconoliteen_AU
dc.subjectPhysical radiation effectsen_AU
dc.subjectSynthetic rocksen_AU
dc.subjectActinidesen_AU
dc.subjectWaste formsen_AU
dc.subjectIrradiationen_AU
dc.subjectSpectroscopyen_AU
dc.subjectAmorphous stateen_AU
dc.titleHVEM-Tandem and EELS study of radiation damage in zirconoliteen_AU
dc.typeConference Abstracten_AU
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