Vacuum-Ultraviolet Absorption Spectra of Icy C2H4 at 13–60 K

Jen Iu Lo, Rana Ghosh, Hsiao Chi Lu, Wei Hsiu Hung, Bing Ming Cheng*

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

摘要

The thermal variation of absorption spectra of icy ethene in wavelength range 105–220 nm was measured from 13 to 100 K using a synchrotron as light source. Sublimation of icy ethene began above 62 K, resulting in decreasing absorption. The absorption of icy ethene increased at wavelengths less than about 150 nm with increasing temperature from 13 to 60 K, but decreased beyond above 150 nm. According to detailed examination, the absorption spectra of icy ethene intersected at isosbestic point 147.0 nm from 13 to 17 K, whereas those varied absorption profiles crossed at another point, 150.6 nm, from 23 to 60 K. These results indicate that ethene ices might exhibit three structures within temperature range 13–60 K. This work enhances our understanding of the spectra of icy ethene at low temperatures and our knowledge of its astrochemistry and astrophysics in cold astro-environments.

原文英語
文章編號700641
期刊Frontiers in Astronomy and Space Sciences
8
DOIs
出版狀態已發佈 - 2021 6月 10

ASJC Scopus subject areas

  • 天文和天體物理學

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