|
Hokkaido University Collection of Scholarly and Academic Papers >
Institute of Low Temperature Science >
Peer-reviewed Journal Articles, etc >
Penetration of Nonenergetic Hydrogen Atoms into Amorphous Solid Water and their Reaction with Embedded Benzene and Naphthalene
| Title: | Penetration of Nonenergetic Hydrogen Atoms into Amorphous Solid Water and their Reaction with Embedded Benzene and Naphthalene |
| Authors: | Tsuge, Masashi Browse this author | | Kouchi, Akira Browse this author | | Watanabe, Naoki Browse this author →KAKEN DB |
| Keywords: | Astrochemistry | | Molecular clouds | | Dense interstellar clouds | | Interstellar molecules | | Interstellar dust | | Laboratory astrophysics |
| Issue Date: | 11-Jul-2022 |
| Publisher: | IOP Publishing |
| Journal Title: | The Astrophysical journal |
| Volume: | 933 |
| Issue: | 2 |
| Start Page: | 138 |
| Publisher DOI: | 10.3847/1538-4357/ac752e |
| Abstract: | Chemical processes on the surface of icy grains play an important role in the chemical evolution in molecular clouds. In particular, reactions involving nonenergetic hydrogen atoms accreted from the gaseous phase have been extensively studied. These reactions are believed to effectively proceed only on the surface of the icy grains; thus, molecules embedded in the ice mantle are not considered to react with hydrogen atoms. Recently, Tsuge et al. suggested that nonenergetic hydrogen atoms can react with CO molecules even in ice mantles via diffusive hydrogenation. This investigation was extended to benzene and naphthalene molecules embedded in amorphous solid water (ASW) in the present study, which revealed that a portion of these molecules could be fully hydrogenated in astrophysical environments. The penetration depths of nonenergetic hydrogen atoms into porous and nonporous ASW were determined using benzene molecules to be >50 and similar to 10 monolayers, respectively (1 monolayer approximate to 0.3 nm). |
| Type: | article |
| URI: | http://hdl.handle.net/2115/86560 |
| 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)
|
|
