Evidence for recent interstellar 60Fe on Earth

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dc.contributor.authorKoll, Den_AU
dc.contributor.authorFaestermann, Ten_AU
dc.contributor.authorFeige, Jen_AU
dc.contributor.authorFifield, LKen_AU
dc.contributor.authorFroehlich, MBen_AU
dc.contributor.authorHotchkis, MACen_AU
dc.contributor.authorKorschinek, Gen_AU
dc.contributor.authorMerchel, Sen_AU
dc.contributor.authorPanjkov, Sen_AU
dc.contributor.authorPavetich, Sen_AU
dc.contributor.authorTims, SGen_AU
dc.contributor.authorWallner, Aen_AU
dc.date.accessioned2023-12-21T00:51:25Zen_AU
dc.date.available2023-12-21T00:51:25Zen_AU
dc.date.issued2019-09-09en_AU
dc.date.statistics2023-05-02en_AU
dc.description.abstractOver the last 20 years the long-lived radionuclide 60Fe with a half-life of 2.6 Myr was shown to be an expedient astrophysical tracer to detect freshly synthesized stardust on Earth. The unprecedented sensitivity of Accelerator Mass Spectrometry for 60Fe at The Australian National University (ANU) and Technical University of Munich (TUM) allowed us to detect minute amounts of 60Fe in deep-sea crusts, nodules, sediments and on the Moon [1-5]. These signals, around 2-3 Myr and 6.5-9 Myr before present, were interpreted as a signature from nearby Supernovae which synthesized and ejected 60Fe into the local interstellar medium. Triggered by these findings, ANU and TUM independently analyzed recent surface material for 60Fe, deep-sea sediments and for the first time Antarctic snow, respectively [6, 7]. We find in both terrestrial archives corresponding amounts of recent 60Fe. We will present these discoveries, evaluate the origin of this recent influx and bring it into line with previously reported ancient 60Fe findings.en_AU
dc.identifier.citationKoll, D., Faestermann, T., Feige, J., Fifield, L. K., Froehlich, M. B., Hotchkis, M. A. C., Korschinek, G., Merchel, S., Panjkov, S., Pavetich, S., Tims, S. G., & Wallner, A. (2019). Evidence for recent interstellar 60Fe on earth. Paper presented to the Heavy Ion Accelerator Symposium on Fundamental and Applied Science - 2019, 9-13 September 2019, Department of Nuclear Physics, Australian National University, Canberra, Australia. (pp. 42). Retrieved from: http://hias.anu.edu.au/2019/_files/2019_HIAS_BookOfAbstracts.pdfen_AU
dc.identifier.conferenceenddate2019-09-13en_AU
dc.identifier.conferencenameHeavy Ion Accelerator Symposium 2019 - Heavy Ion Accelerator Symposium on Fundamental and Applied Scienceen_AU
dc.identifier.conferenceplaceDepartment of Nuclear Physics, Australian National University, Canberra, Australiaen_AU
dc.identifier.conferencestartdate2019-09-09en_AU
dc.identifier.pagination42en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/15294en_AU
dc.language.isoenen_AU
dc.publisherAustralian National Universityen_AU
dc.subjectIronen_AU
dc.subjectEarth planeten_AU
dc.subjectRadioisotopesen_AU
dc.subjectHalf-lifeen_AU
dc.subjectAccelerator experimental facilitiesen_AU
dc.subjectMoonen_AU
dc.subjectInterstellar magnetic fielden_AU
dc.subjectSea beden_AU
dc.subjectSedimentsen_AU
dc.titleEvidence for recent interstellar 60Fe on Earthen_AU
dc.typeConference Abstracten_AU
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