Coverage dependent H2 desorption energy: a quantitative explanation based on encounter desorption mechanism
文献类型：期刊论文
| 作者 | Meng, Qingkuan5; Chang, Qiang5 ; Zhao, Gang5; Quan, Donghui2,4; Tsuge, Masashi1; Zhang, Xia2; Zhang, Yong3; Li, Xiao-Hu2
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| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 出版日期 | 2023-09-29 |
| 卷号 | 526期号:2页码:2394-2399 |
| 关键词 | astrochemistry ISM: abundances ISM: molecules |
| ISSN号 | 0035-8711 |
| DOI | 10.1093/mnras/stad2905 |
| 产权排序 | 3 |
| 英文摘要 | Recent experiments show that the desorption energy of H-2 on a diamond-like carbon surface depends on the H-2 coverage of the surface. We aim to quantitatively explain the coverage dependent H-2 desorption energy measured by the experiments. We derive a math formula to calculate an effective H-2 desorption energy based on the encounter desorption mechanism. The effective H-2 desorption energy depends on two key parameters, the desorption energy of H-2 on H-2 substrate and the ratio of H-2 diffusion barrier to its desorption energy. The calculated effective H-2 desorption energy qualitatively agrees with the coverage dependent H-2 desorption energy measured by the experiments if the values of these two parameters in literature are used in the calculations. We argue that the difference between the effective H-2 desorption energy and the experimental results is due to the lack of knowledge about these two parameters. So, we recalculate these two parameters based on experimental data. Good agreement between theoretical and experimental results can be achieved if these two updated parameters are used in the calculations. |
| WOS关键词 | MOLECULAR-HYDROGEN FORMATION ; SURFACE H-2 ; INTERSTELLAR ; ICE ; SIMULATION ; ABUNDANCE ; CHEMISTRY ; ATOMS |
| 资助项目 | National Natural Science Foundation of China[12173023] ; National Natural Science Foundation of China[11973075] ; National Natural Science Foundation of China[11973099] ; National Natural Science Foundation of China[12203091] ; National Natural Science Foundation of China |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001159221300036 |
| 出版者 | OXFORD UNIV PRESS |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/5897]  |
| 专题 | 研究单元未命名 |
| 通讯作者 | Chang, Qiang |
| 作者单位 | 1.Hokkaido Univ, Inst Low Temp Sci, Kita 19,Nishi 8,Kita Ku, Sapporo 0600819, Japan 2.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 830011, Peoples R China 3.Sun Yat Sen Univ, Sch Phys & Astron, Zhuhai 519082, Peoples R China 4.Zhejiang Lab, Res Ctr Intelligent Comp Platforms, Hangzhou 311100, Peoples R China 5.Shandong Univ Technol, Sch Phys & Optoeletron Engn, Zibo 255000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Meng, Qingkuan,Chang, Qiang,Zhao, Gang,et al. Coverage dependent H2 desorption energy: a quantitative explanation based on encounter desorption mechanism[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2023,526(2):2394-2399. |
| APA | Meng, Qingkuan.,Chang, Qiang.,Zhao, Gang.,Quan, Donghui.,Tsuge, Masashi.,...&Li, Xiao-Hu.(2023).Coverage dependent H2 desorption energy: a quantitative explanation based on encounter desorption mechanism.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,526(2),2394-2399. |
| MLA | Meng, Qingkuan,et al."Coverage dependent H2 desorption energy: a quantitative explanation based on encounter desorption mechanism".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 526.2(2023):2394-2399. |
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