Cosmogenic radioisotopes in the Almahata Sitta ureilite

Details Cosmogenic radioisotopes in the Almahata Sitta ureilite Cosmogenic radioisotopes in the Almahata Sitta ureilite

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010m%26ps...45.1743t&link_type=abstract

Meteoritics & Planetary Science, Volume 45, Issue 1743, pp. 1743-1750.

Other

Scientific paper

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.

Affiliated with

Also associated with

No associations

Rating

Cosmogenic radioisotopes in the Almahata Sitta ureilite does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Cosmogenic radioisotopes in the Almahata Sitta ureilite, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cosmogenic radioisotopes in the Almahata Sitta ureilite will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1235117