Nanophase iron production through laser irradiation and magnetic detection of space weathering analogs

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985831%3A_____%2F16%3A00458598" target="_blank" >RIV/67985831:_____/16:00458598 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.icarus.2015.12.022" target="_blank" >http://dx.doi.org/10.1016/j.icarus.2015.12.022</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.icarus.2015.12.022" target="_blank" >10.1016/j.icarus.2015.12.022</a>

Result language
angličtina
Original language name
Nanophase iron production through laser irradiation and magnetic detection of space weathering analogs
Original language description
Airless bodies are constantly exposed to space weathering. The Moon and other similar S-type asteroids physically change through comminution, melting, and agglutinate formation, while spectrally they are darkening, steepening (or reddening) the spectral slope toward longer wavelengths, and reducing silicate mineral absorption bands. In these S-type bodies the production of submicroscopic metallic iron, or nanophase iron (SMFe, npFe0) is a major contributor in these spectral changes. We made a qualitative estimate of both quantity and size distribution of produced metallic iron by space weathered analog, olivine irradiated by laser. Through SEM observation we confirmed that nanoparticles of metallic iron formed in the nm range. Spectroscopic and magnetic susceptibility (MS) through temperature analyses reveal an increasing trend of npFe0 formation, darkening, reddening, and shallowing of the 1 μm olivine absorption band. Olivine that produced the larger end of the size range of npFe0 produced similar effects, except for increased reddening. The magnetic data suggests that with laser irradiation there is both a linear increase of nanoparticles and a logarithmic increase in spectral change with SW time.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BN - Astronomy and celestial mechanics, astrophysics
OECD FORD branch
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Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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