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UV-ray irradiation never causes amorphization of crystalline CO2: A transmission electron microscopy study
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| Title: | UV-ray irradiation never causes amorphization of crystalline CO2: A transmission electron microscopy study |
| Authors: | Masashi, Tsuge Browse this author | | Thanh, Nguyen Browse this author →KAKEN DB | | Yasuhiro, Oba Browse this author | | Hama, Tetsuya Browse this author | | Kouchi, Akira Browse this author →KAKEN DB | | Watanabe, Naoki Browse this author →KAKEN DB |
| Keywords: | Astrochemistry | | Cosmic ice | | Transmission electron microscopy | | Infrared spectroscopy |
| Issue Date: | 14-Sep-2020 |
| Publisher: | Elsevier |
| Journal Title: | Chemical Physics Letters |
| Volume: | 760 |
| Start Page: | 137999 |
| Publisher DOI: | 10.1016/j.cplett.2020.137999 |
| Abstract: | The Crystallinity of ices, amorphous and crystalline, can be altered not only by heat but also by irradiation of UV-rays or charged particles. In this work, the effect of UV-irradiation on the crystallinity of CO2 ice was investigated by using a transmission electron microscope. A crystalline CO2 ice was produced by annealing amorphous CO2 ice. We found that UV-ray irradiation of CO2 crystals at approximately 10 K does not cause amorphization in contrast to the reported amorphization of crystalline water ice below 70 K. We discuss the difference based on the expected UV photochemistry of CO2 ice. |
| Rights: | © 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ | | http://creativecommons.org/licenses/by-nc-nd/4.0/ |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/87367 |
| Appears in Collections: | 低温科学研究所 (Institute of Low Temperature Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 柘植 雅士
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