Developments in micro-sample 14C AMS at the ANTARES AMS facility

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dc.contributor.authorHua, Qen_AU
dc.contributor.authorWilliams, AAen_AU
dc.contributor.authorLevchenko, VAen_AU
dc.contributor.authorYing, Ben_AU
dc.contributor.authorSmith, AMen_AU
dc.date.accessioned2010-07-05T00:41:42Zen_AU
dc.date.available2010-07-05T00:41:42Zen_AU
dc.date.issued2010-04-01en_AU
dc.date.statistics2010-04-01en_AU
dc.description.abstractWe continue development of micro-sample radiocarbon sample preparation and AMS measurement at the ANTARES AMS facility. We routinely prepare samples containing 10–200 μg of carbon using an iron catalyst with an excess of hydrogen in 2.5 mL graphitisation reactors. These use a tube furnace to heat the catalyst to 600°C and a Peltier-cooled water trap. Samples containing just a few micrograms of carbon can be prepared. We describe progress with a 0.5 mL laser-heated ‘microfurnace’ we are developing for the rapid and efficient graphitisation of 5 μg samples. Following operating experience with a prototype unit, work has commenced on the development of a second-generation device with the goal of fully automated operation with minimal introduction of extraneous carbon. Key to development of micro-sample 14C AMS is the ability to reliably handle the graphite/iron sample and to mount it in the ion source target holder. We have developed a target holder that permits the sample to be loaded in a 1 mm diameter recess and rear pressed, ensuring a high quality surface finish, at a reproducible depth. Additionally we have developed a method for systematically aligning the sample stage with the cesium beam following ion source servicing. Crown copyright © 2009 Published by Elsevier B.V.en_AU
dc.identifier.citationHua, Q., Williams, A., Levchenko, V., & Ying, B. (2010). Developments in micro-sample 14C AMS at the ANTARES AMS facility. Paper presented to the 11th International Conference on Accelerator Mass Spectrometry (AMS-11), 14th – 19th September 2008. Spazio Etoile, Rome. In Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 268(7), 919-923. doi:10.1016/j.nimb.2009.10.064268(7-8), 919-923.en_AU
dc.identifier.conferenceenddate19 September 2008en_AU
dc.identifier.conferencename11th International Conference on Accelerator Mass Spectrometry (AMS-11)en_AU
dc.identifier.conferenceplaceSpazio Etoile, Romeen_AU
dc.identifier.conferencestartdate14 September 2008en_AU
dc.identifier.govdoc1842en_AU
dc.identifier.issn0168-583Xen_AU
dc.identifier.issue7en_AU
dc.identifier.journaltitleNuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atomsen_AU
dc.identifier.pagination919-923en_AU
dc.identifier.urihttp://dx.doi.org/10.1016/j.nimb.2009.10.064en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/1742en_AU
dc.identifier.volume268en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectCarbon 14en_AU
dc.subjectMass spectroscopyen_AU
dc.subjectANTARES Tandem Acceleratoren_AU
dc.subjectGraphitizationen_AU
dc.subjectHydrogenen_AU
dc.subjectSample holdersen_AU
dc.titleDevelopments in micro-sample 14C AMS at the ANTARES AMS facilityen_AU
dc.typeConference Paperen_AU
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