The ANSTO – University of Wollongong in-situ 14C extraction laboratory

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dc.contributor.authorFülöp, RHen_AU
dc.contributor.authorFink, Den_AU
dc.contributor.authorYang, Ben_AU
dc.contributor.authorCodilean, AYen_AU
dc.contributor.authorSmith, AMen_AU
dc.contributor.authorWacker, Len_AU
dc.contributor.authorLevchenko, VAen_AU
dc.contributor.authorDunai, TJen_AU
dc.date.accessioned2021-12-16T21:19:17Zen_AU
dc.date.available2021-12-16T21:19:17Zen_AU
dc.date.issued2019-01-01en_AU
dc.date.statistics2021-11-16en_AU
dc.description.abstractWe present our first 14C in-situ results for calibration and system blanks from the recently completed Australian Nuclear Science and Technology Organisation (ANSTO) – University of Wollongong (UOW) in-situ 14C extraction system. System performance parameters and quality is evidenced by low 14C blanks and good reproducibility for multiple targets from different reference materials. The 14C extraction scheme exploits the high temperature phase transformation of quartz to cristobalite in order to quantitatively extract the carbon as CO2. The in-situ 14C extraction system comprises three independently operated and modular units that are used for initial in-vacuo removal of meteoric 14C, followed by offline high-temperature heating of quartz to release trapped cosmogenic in-situ 14C, and finally CO2 gas purification and mass measurement. The design allows for rapid sample throughput of about 6 samples per week with samples masses ranging between 0.5 and 4 g of clean quartz. Other features include single-pass catalytic oxidation using mixed copper (I,II) oxide as catalyst, use of UHV-compatible components and of vacuum annealed copper tubing. We present results for sets of purified quartz samples prepared from CRONUS-A, CRONUS-R and CRONUS-N inter-comparison materials, with final averages consistent with published values. Following extraction and cleaning, CO2 gas aliquots for some of the samples were analysed using the ETH Zürich CO2 gas ion source at the ETH MICADAS AMS facility in addition to CO2 being graphitised using the ANSTO laser-heated graphitisation micro-furnace and then analysed on ANSTO’s ANTARES AMS facility. System blanks using either CO2 or graphite ion-sources at both facilities are on the order of ∼1 × 104 atoms. © 2018 Elsevier B.V.en_AU
dc.identifier.citationFülöp, R.-H., Fink, D., Yang, B., Codilean, A. T., Smith, A., Wacker, L., Levchenko, V., & Dunai, T. J. (2019). The ANSTO – University of Wollongong in-situ 14C extraction laboratory. Paper presented at 14th triennial International Conference on Accelerator Mass Spectrometry (AMS), Ottawa, Canada, August 14-18, 2017. In Kieser, W., Clark, I., Zhao, X., Crann, C., Gosse, J., Rehn, L. (eds) Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 438, 207-213. doi:10.1016/j.nimb.2018.04.018en_AU
dc.identifier.conferenceenddate18 August 2017en_AU
dc.identifier.conferencename14th triennial International Conference on Accelerator Mass Spectrometry (AMS)en_AU
dc.identifier.conferenceplaceOttawa, Canadaen_AU
dc.identifier.conferencestartdate14 August 2017en_AU
dc.identifier.editorsKieser, W., Clark, I., Zhao, X., Crann, C., Gosse, J., Rehn, L.en_AU
dc.identifier.issn0168-583Xen_AU
dc.identifier.journaltitleNuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atomsen_AU
dc.identifier.pagination207-213en_AU
dc.identifier.urihttps://doi.org/10.1016/j.nimb.2018.04.018en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/12506en_AU
dc.identifier.volume438en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectIn-situ processingen_AU
dc.subjectCarbon 14en_AU
dc.subjectIsotopesen_AU
dc.subjectANSTOen_AU
dc.subjectCalibrationen_AU
dc.subjectTargetsen_AU
dc.titleThe ANSTO – University of Wollongong in-situ 14C extraction laboratoryen_AU
dc.typeConference Paperen_AU
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