Mid- and far-infrared spectroscopy of ices:  optical constants and integrated absorbances.
Laboratory spectra through the mid-infrared (4000 to 500 cm-1 [2.5-20 micrometers]) have been used to calculate the optical constants (n and k) and integrated absorption coefficients (A) for a variety of pure and mixed molecular ices of relevance to astrophysics.  The ices studied were H2O, CH3OH, CO2, OCS, CH4, CO2 + CH4, CO2 + OCS, CO + CH4, CO + OCS, O2 + CH4, O2 + OCS, N2 + CH4, N2 + OCS, H2O + CH4, H2O + OCS, and H2O + CH3OH + CO + NH3.  In addition, the measurements have been extended through the far-infrared (500 to 50 cm-1 [20-200 micrometers]) for the H2O, CH3OH, and H2O + CH3OH + CO + NH3 ices.
Hudgins
D M
DM
NASA/Ames Research Center, Moffett Field, CA 94035, USA.
Sandford
S A
SA
Allamandola
L J
LJ
Tielens
A G
AG
D001256:Astronomy / Q000295:instrumentation* / Q000379:methods; D005118:Extraterrestrial Environment; D007053:Ice / Q000032:analysis*; D008956:Models, Chemical; D055095:Optics and Photonics; D012031:Refractometry; D017550:Spectroscopy, Fourier Transform Infrared / Q000295:instrumentation*; D013696:Temperature
D007053:Ice