CO2 ice on a silicate dust analog relaxes the metal surface selection rule in RAIRS, delays CO2 desorption to about 115-120 kelvin, and produces a split 13CO2 feature at 70 kelvin that matches JWST protostellar spectra.
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CO2 infrared spectra on silicate dust grain analogs: Implications for JWST observations
CO2 ice on a silicate dust analog relaxes the metal surface selection rule in RAIRS, delays CO2 desorption to about 115-120 kelvin, and produces a split 13CO2 feature at 70 kelvin that matches JWST protostellar spectra.