X-ray processing of a realistic ice mantle can explain the gas abundances in protoplanetary disks

發佈於 分類: pps2020

The Atacama Large Millimeter Array has allowed a detailed observation of molecules in protoplanetary disks, which can evolve toward solar systems like our own. While CO, H2CO are often abundant species in the cold zones of the disk, CH3CN are only found in a few regions, and more-complex organic molecules are not observed. We simulate, experimentally, […]

Effects of 150 − 1000 eV Electron Impacts on Pure Carbon Monoxide Ices using the Interstellar Energetic-Process System (IEPS)

發佈於 分類: pps2020

Pure CO ice has been irradiated with electrons of energy in the range 150 − 1000 eV with the Interstellar Energetic-Process System (IEPS). The main products of irradiation are carbon chains Cn (n=3,5,6,8,9,10,11,12),suboxides,CnO(n=2,3,4,5,6,7),andCnO2 (n=1,3,4,5,7) species. CO2 is by far the most abundant reaction product in all the experiments. The destruction cross-section of CO peaks at […]