On the Photodesorption of CO2 Ice Analogs: The Formation of Atomic C in the Ice and the Effect of the VUV Emission Spectrum

發佈於 分類: pps2019

CO2 ice has a phase transition at 35 K when its structure changes from amorphous to crystalline. Using reflectionabsorption infrared spectroscopy, Öberg et al. observed that the photodesorption yield of CO2 ice deposited at 60 K and irradiated at 18 K is 40% lower than that of CO2 ice deposited and irradiated at 18 K. […]

X-Ray Photo-desorption of H2O:CO:NH3 Circumstellar Ice Analogs: Gas-phase Enrichment

發佈於 分類: pps2019

We study the photo-desorption occurring in H2O:CO:NH3 ice mixtures irradiated with monochromatic (550 and 900 eV) and broadband (250–1250 eV) soft X-rays generated at the National Synchrotron Radiation Research Center(Hsinchu, Taiwan). We detect many masses photo-desorbing, from atomic hydrogen (m/z = 1) to complex species with m/z = 69 (e.g., C3H3NO, C4H5O, C4H7N), supporting the […]