IR Optical Constants of an Organic
Residue from 200 keV He+ on N2:CH4 :CO
Ice Mixture (T= 16 K)
G.A. Baratta, D. Chaput, H. Cottin, L. Fernandez Cascales, M.E. Palumbo, G. Strazzulla,
Planetary and Space Science (2015).
We have prepared and characterized (by UV-Vis-IR spectroscopy) a set of 30 organic samples, stable at room temperature, that are part of
the experiment “Photochemistry on the Space Station (PSS)” on the EXPOSE-R2 mission, conducted on the EXPOSE-R facility. The core facility is placed
outside the International Space Station (ISS) on the Universal Platform D (URM-D platform) of the Russian module Zvezda. The organic residues have been
prepared in the Catania laboratory after 200 keV He+ irradiation of icy mixtures, namely
N2:CH4 :CO (1:1:1) deposited at 16 K on MgF2 windows
furnished by the European Space Agency.
The optical constants of the Organic Residues have been derived in a wide spectral range (500-84000 cm-1 ) by adopting
the Kramers-Kronig constrained variational dielectric function fitting (KKCVDF) procedure.
Details can be found in:
G.A. Baratta, D. Chaput, H. Cottin, L. Fernandez Cascales, M.E. Palumbo, G. Strazzulla,
Organic samples produced by ion bombardment of ices for the EXPOSE-R2 mission on the International Space Station, ,
Planetary and Space Science (2015), http://dx.doi.org/10.1016/j.pss.2015.08.011.
Please refer to this article when using data from this
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