Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1111/j.1945-5100.2010.01135.x |
Cosmogenic radioisotopes in the Almahata Sitta ureilite | |
Taricco, Carla1,2; Bhandari, Narendra3; Colombetti, Paolo1,2; Romero, Alberto2; Vivaldo, Gianna2; Sinha, Neeharika4; Jenniskens, Peter5; Shaddad, Muawia H.6; Ballabh, G. M.7 | |
通讯作者 | Taricco, Carla |
来源期刊 | METEORITICS & PLANETARY SCIENCE
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ISSN | 1086-9379 |
EISSN | 1945-5100 |
出版年 | 2010 |
卷号 | 45期号:10-11页码:1743-1750 |
英文摘要 | 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. |
类型 | Article |
语种 | 英语 |
国家 | Italy ; India ; USA ; Sudan |
收录类别 | SCI-E |
WOS记录号 | WOS:000285759700012 |
WOS关键词 | EXPERIMENTAL SET-UP ; PRODUCTION-RATES ; RADIONUCLIDES ; METEORITES ; NUCLIDES ; TORINO ; FALL |
WOS类目 | Geochemistry & Geophysics |
WOS研究方向 | Geochemistry & Geophysics |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/165658 |
作者单位 | 1.Univ Turin, Dipartimento Fis Gen, Via Pietro Giuria 1, I-10125 Turin, Italy; 2.INAF, IFSI, Turin, Italy; 3.Basic Sci Res Inst, Ahmadabad 380009, Gujarat, India; 4.Indian Inst Astrophys, Bangalore 560034, Karnataka, India; 5.Carl Sagan Ctr, SETI Inst, Mountain View, CA 94043 USA; 6.Univ Khartoum, Dept Phys & Astron, Khartoum 11115, Sudan; 7.Osmania Univ, Ctr Adv Study Astron, Hyderabad 500007, Andhra Pradesh, India |
推荐引用方式 GB/T 7714 | Taricco, Carla,Bhandari, Narendra,Colombetti, Paolo,et al. Cosmogenic radioisotopes in the Almahata Sitta ureilite[J],2010,45(10-11):1743-1750. |
APA | Taricco, Carla.,Bhandari, Narendra.,Colombetti, Paolo.,Romero, Alberto.,Vivaldo, Gianna.,...&Ballabh, G. M..(2010).Cosmogenic radioisotopes in the Almahata Sitta ureilite.METEORITICS & PLANETARY SCIENCE,45(10-11),1743-1750. |
MLA | Taricco, Carla,et al."Cosmogenic radioisotopes in the Almahata Sitta ureilite".METEORITICS & PLANETARY SCIENCE 45.10-11(2010):1743-1750. |
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