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Evidence of Surface Catalytic Effect on Cosmic Dust Grain Analogs: The Ammonia and Carbon Dioxide Surface Reaction

  • Authors: Alexey Potapov, Patrice Theulé, Cornelia Jäger, and Thomas Henning

2019 The Astrophysical Journal Letters 878 L20.

  • Provider: AAS Journals

Caption: Figure 4.

Experimental TPD curves for ﹩{{\mathrm{NH}}_{4}}^{+}﹩NH2COO obtained (a) from the mass spectra by taking the signal at mass 61 and (b) from the IR spectra by taking the first temperature derivative of the integrated intensity of the 1550 cm−1 band. The curves were measured with a ramp rate of 2 K minute−1 for 200 nm ice on carbon grains after 4 hr of the isothermal kinetic experiment.

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