Please use this identifier to cite or link to this item: http://hdl.handle.net/2248/5282
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dc.contributor.authorCarla, T-
dc.contributor.authorNarendra, B-
dc.contributor.authorPaolo, C-
dc.contributor.authorAlberto, R-
dc.contributor.authorGianna, V-
dc.contributor.authorNeeharika, S-
dc.contributor.authorPeter, J-
dc.contributor.authorMuawia, H. S-
dc.contributor.authorBallabh, G. M-
dc.date.accessioned2010-12-20T10:51:00Z-
dc.date.available2010-12-20T10:51:00Z-
dc.date.issued2010-11-
dc.identifier.citationMeteoritics & Planetary Science, Vol. 45, No. 10-11, pp.1743–1750en
dc.identifier.urihttp://hdl.handle.net/2248/5282-
dc.descriptionRestricted Accessen
dc.description.abstractAsteroid 2008 TC3 was predicted to fall in Sudan on October 7, 2008, and 2 months later, 15 meteorite fragments were recovered from the Nubian Desert. Most of these fragments were classified as polymict ureilites. In the largest ureilitic fragment #15, weighing 75 g, we have measured six gamma emitting radionuclides (46Sc, 57Co, 54Mn, 22Na, 60Co, and 26Al) by nondestructive whole rock counting using a sensitive gamma-ray spectrometer. The activities of 60Co, produced mainly by neutron capture in cobalt, and 26Al indicate that fragment #15 was located at a depth of 41 ± 14 cm inside the 1.5–2 m radius asteroid. The activity of other radionuclides is also consistent with this shielding depth within the asteroid. The 22Na/26Al activity ratio is higher than expected for the average cosmic ray flux, probably due to the unusually prolonged solar minimum before the fall.en
dc.language.isoenen
dc.publisherJohn Wiley & Sonsen
dc.relation.urihttp://onlinelibrary.wiley.com/doi/10.1111/j.1945-5100.2010.01135.x/abstracten
dc.rights© John Wiley & Sonsen
dc.titleCosmogenic radioisotopes in the Almahata Sitta ureiliteen
dc.typeArticleen
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