Laboratory simulation of space weathering: ESR measurements of nanophase metallic iron in laser-irradiated materials

Details Laboratory simulation of space weathering: ESR measurements of nanophase metallic iron in laser-irradiated materials Laboratory simulation of space weathering: ESR measurements of nanophase metallic iron in laser-irradiated materials

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002ep%26s...54e...5k&link_type=abstract

Earth, Planets and Space, Volume 54, p. e5-e7.

Computer Science

3

Scientific paper

S-type asteroids are believed to be parent bodies of ordinary chondrites. However, the reflectancespectra of S-type asteroids are different from those of ordinary chondrites. This spectral mismatch is strongly considered as a result of space weathering, where high-velocity dust particle impacts should change the optical properties of the uppermost regolith surface of asteroids. To simulate space weathering by impact heating of dust particles, we irradiated nanosecond pulse laser beam onto planetary surface materials, whose pulse duration and energy rate are comparable with those of real dust impacts. The laser-irradiated samples show optical changes similar to that by space weathering, and contain nanophase metallic iron particles considered as the essential cause of space weathering. After laser-irradiations, we observed the samples by an Electron Spin Resonance (ESR) to perform quantitative analysis of nanophase metallic iron particles. We report the first description that the quantities of nanophase metallic iron particles in olivine samples increase at higher space weathering degree.

Affiliated with

Also associated with

No associations

Rating

Laboratory simulation of space weathering: ESR measurements of nanophase metallic iron in laser-irradiated materials 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 Laboratory simulation of space weathering: ESR measurements of nanophase metallic iron in laser-irradiated materials, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Laboratory simulation of space weathering: ESR measurements of nanophase metallic iron in laser-irradiated materials will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-963223