Stable platinum isotope measurements in presolar nanodiamonds by TEAMS

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dc.contributor.authorWallner, Aen_AU
dc.contributor.authorMelber, Ken_AU
dc.contributor.authorMerchel, Sen_AU
dc.contributor.authorOtte, Uen_AU
dc.contributor.authorForstner, Oen_AU
dc.contributor.authorGosler, Ren_AU
dc.contributor.authorKutschera, Wen_AU
dc.contributor.authorPriller, Aen_AU
dc.contributor.authorSteier, Pen_AU
dc.date.accessioned2015-11-01T02:09:28Zen_AU
dc.date.available2015-11-01T02:09:28Zen_AU
dc.date.issued2013-01-01en_AU
dc.date.statistics2015-10-26en_AU
dc.description.abstractNanodiamonds are stardust grains commonly found in primitive meteorites. They survived the formation of the solar system and kept their own individuality. Measurements of trace-element isotopic signatures in these grains will help understanding heavy element nucleosynthesis in massive stars and dust formation from their ejecta. We have continued previous attempts to search for stable Pt isotope anomalies in nanodiamonds via trace element accelerator mass spectrometry (TEAMS). The installation of a new injector beam line at the VERA facility allowed studying low traces of stable elements in different materials. Moreover, recent experiments showed that VERA provides the required measurement precision together with a low Pt machine background. Here, we observed for the first time an indication for enhancements of 198Pt/195Pt isotope ratios in two diamond residues prepared by different chemical separation techniques from the Allende meteorite. Variations in other isotopic ratios were within analytical uncertainty, and no anomaly was identified in a third diamond fraction. © 2012, Elsevier B.V.en_AU
dc.identifier.citationWallner, A., Melber, K., Merchel, S., Otte, U., Forstner, O., Golser, R., Kutschera, W., Priller, A., & Steier, P. (2013). Stable platinum isotope measurements in presolar nanodiamonds by TEAMS. Paper presented at the Twelfth International Conference on Accelerator Mass Spectrometry, 20-25 March 2011, Wellington, New Zealand. In Zondervan, A., Prior, C., Bruhn, F., & Sparks, R. (Eds), Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 294, 496-502. doi:10.1016/j.nimb.2012.03.036en_AU
dc.identifier.conferenceenddate25 March 2011en_AU
dc.identifier.conferencenameTwelfth International Conference on Accelerator Mass Spectrometry 2011en_AU
dc.identifier.conferenceplaceWellington, New Zealand.en_AU
dc.identifier.conferencestartdate20 March 2011en_AU
dc.identifier.editorsZondervan, A., Prior, C., Bruhn, F., & Sparks, R.en_AU
dc.identifier.govdoc6221en_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.pagination496-502en_AU
dc.identifier.urihttp://dx.doi.org/10.1016/j.nimb.2012.03.036en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/6375en_AU
dc.identifier.volume294en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectElementsen_AU
dc.subjectSolar systemen_AU
dc.subjectNucleosynthesisen_AU
dc.subjectStarsen_AU
dc.subjectMass spectroscopyen_AU
dc.subjectVariationsen_AU
dc.titleStable platinum isotope measurements in presolar nanodiamonds by TEAMSen_AU
dc.typeConference paperen_AU
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