KMS of Xinjiang Astronomical Observatory, CAS
| Coverage dependent H2 desorption energy: a quantitative explanation based on encounter desorption mechanism | |
Meng, Qingkuan1; Chang, Qiang1 ; Zhao, Gang1; Quan, Donghui2,3; Tsuge, Masashi4; Zhang, Xia3; Zhang, Yong5; Li, Xiao-Hu3
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| 2023-09-29 | |
| Source Publication | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| ISSN | 0035-8711 |
| Volume | 526Issue:2Pages:2394-2399 |
| Contribution Rank | 3 |
| Abstract | 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. |
| Keyword | astrochemistry ISM: abundances ISM: molecules |
| DOI | 10.1093/mnras/stad2905 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | MOLECULAR-HYDROGEN FORMATION ; SURFACE H-2 ; INTERSTELLAR ; ICE ; SIMULATION ; ABUNDANCE ; CHEMISTRY ; ATOMS |
| Funding Project | 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 Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:001159221300036 |
| Publisher | OXFORD UNIV PRESS |
| Funding Organization | National Natural Science Foundation of China ; National Natural Science Foundation of China |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/5898 |
| Collection | 中国科学院新疆天文台 |
| Corresponding Author | Chang, Qiang |
| Affiliation | 1.Shandong Univ Technol, Sch Phys & Optoeletron Engn, Zibo 255000, Peoples R China 2.Zhejiang Lab, Res Ctr Intelligent Comp Platforms, Hangzhou 311100, Peoples R China 3.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 830011, Peoples R China 4.Hokkaido Univ, Inst Low Temp Sci, Kita 19,Nishi 8,Kita Ku, Sapporo 0600819, Japan 5.Sun Yat Sen Univ, Sch Phys & Astron, Zhuhai 519082, Peoples R China |
| Recommended Citation 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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| Meng-2023-Coverage d（901KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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