<> "The repository administrator has not yet configured an RDF license."^^ . <> . . . "Cosmogenic radioisotopes in the Almahata Sitta ureilite"^^ . "Asteroid 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."^^ . "2010-11" . "45" . "10-11" . . "Wiley"^^ . . . "Meteoritics and Planetary Science"^^ . . . "10869379" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "G. M."^^ . "Ballabh"^^ . "G. M. Ballabh"^^ . . "Alberto"^^ . "Romero"^^ . "Alberto Romero"^^ . . "Muawia H."^^ . "Shaddad"^^ . "Muawia H. Shaddad"^^ . . "Gianna"^^ . "Vivaldo"^^ . "Gianna Vivaldo"^^ . . "Peter"^^ . "Jenniskens"^^ . "Peter Jenniskens"^^ . . "Carla"^^ . "Taricco"^^ . "Carla Taricco"^^ . . "Paolo"^^ . "Colombetti"^^ . "Paolo Colombetti"^^ . . "Narendra"^^ . "Bhandari"^^ . "Narendra Bhandari"^^ . . "Neeharika"^^ . "Sinha"^^ . "Neeharika Sinha"^^ . . . . . "HTML Summary of #2360 \n\nCosmogenic radioisotopes in the Almahata Sitta ureilite\n\n" . "text/html" . . . "QB Astronomy"@en . . . "QC Physics"@en . .