Neutron Activation Analysis of a Particle Returned from Asteroid Itokawa

Details Neutron Activation Analysis of a Particle Returned from Asteroid Itokawa Neutron Activation Analysis of a Particle Returned from Asteroid Itokawa

Aug 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011sci...333.1119e&link_type=abstract

Science, Volume 333, Issue 6046, pp. 1119- (2011).

Computer Science

10

Scientific paper

A single grain (~3 micrograms) returned by the Hayabusa spacecraft was analyzed by neutron activation analysis. This grain is mainly composed of olivine with minor amounts of plagioclase, troilite, and metal. Our results establish that the Itokawa sample has similar chemical characteristics (iron/scandium and nickel/cobalt ratios) to chondrites, confirming that this grain is extraterrestrial in origin and has primitive chemical compositions. Estimated iridium/nickel and iridium/cobalt ratios for metal in the Itokawa samples are about five times lower than CI carbonaceous chondrite values. A similar depletion of iridium was observed in chondrule metals of ordinary chondrites. These metals must have condensed from the nebular where refractory siderophile elements already condensed and were segregated.

Affiliated with

Also associated with

No associations

Rating

Neutron Activation Analysis of a Particle Returned from Asteroid Itokawa 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 Neutron Activation Analysis of a Particle Returned from Asteroid Itokawa, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Neutron Activation Analysis of a Particle Returned from Asteroid Itokawa will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1667566