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| Three body photodissociation of the water molecule and its implications for prebiotic oxygen production | |
Chang, Yao1; Yu, Yong1; An, Feng2; Luo, Zijie1,3; Quan, Donghui4 ; Zhang, Xia5; Hu, Xixi2; Li, Qinming1; Yang, Jiayue1; Chen, Zhichao1; Che, Li3; Zhang, Weiqing1; Wu, Guorong1; Xie, Daiqian2; Ashfold, Michael N. R.6; Yuan, Kaijun1; Yang, Xueming1,7
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| 2021-04-01 | |
| Source Publication | Nature Communications
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| ISSN | 2041-1723 |
| Volume | 12Issue:1Pages:2476 |
| Contribution Rank | 5 |
| Abstract | The provenance of oxygen on the Earth and other planets in the Solar System is a fundamental issue. It has been widely accepted that the only prebiotic pathway to produce oxygen in the Earth's primitive atmosphere was via vacuum ultraviolet (VUV) photodissociation of CO2 and subsequent two O atom recombination. Here, we provide experimental evidence of three-body dissociation (TBD) of H2O to produce O atoms in both D-1 and P-3 states upon VUV excitation using a tunable VUV free electron laser. Experimental results show that the TBD is the dominant pathway in the VUV H2O photochemistry at wavelengths between 90 and 107.4nm. The relative abundance of water in the interstellar space with its exposure to the intense VUV radiation suggests that the TBD of H2O and subsequent O atom recombination should be an important prebiotic O-2-production, which may need to be incorporated into interstellar photochemical models. Three-body dissociation of water, producing one oxygen and two hydrogen atoms, has been difficult to investigate due to the lack of intense vacuum ultraviolet sources. Here, using a tunable free-electron laser, the authors obtain quantum yields for this channel showing that it is a possible route to prebiotic oxygen formation in interstellar environments. |
| Keyword | dissociation dynamics 121.6 nm h2o energy d2o photoabsorption fluorescence spectroscopy ionization atmosphere Science & Technology - Other Topics |
| Subtype | Article |
| DOI | 10.1038/s41467-021-22824-7 |
| URL | 查看原文 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000656482800006 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/4705 |
| Collection | 射电天文研究室_天体化学研究团组 |
| Affiliation | 1.State Key Laboratory of Molecular Reaction Dynamics and Dalian Coherent Light Source, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China; 2.Key Laboratory of Mesoscopic Chemistry, School of Chemistry and Chemical Engineering, Institute of Theoretical and Computational Chemistry, Nanjing University, Nanjing, China; 3.Department of Physics, School of Science, Dalian Maritime University, Dalian, Liaoning, China; 4.Eastern Kentucky University, Richmond, KY, USA; 5.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Urumqi, China; 6.School of Chemistry, University of Bristol, Bristol, UK; 7.Department of Chemistry, College of Science, Southern University of Science and Technology, Shenzhen, China |
| Recommended Citation GB/T 7714 | Chang, Yao,Yu, Yong,An, Feng,et al. Three body photodissociation of the water molecule and its implications for prebiotic oxygen production[J]. Nature Communications,2021,12(1):2476. |
| APA | Chang, Yao.,Yu, Yong.,An, Feng.,Luo, Zijie.,Quan, Donghui.,...&Yang, Xueming.(2021).Three body photodissociation of the water molecule and its implications for prebiotic oxygen production.Nature Communications,12(1),2476. |
| MLA | Chang, Yao,et al."Three body photodissociation of the water molecule and its implications for prebiotic oxygen production".Nature Communications 12.1(2021):2476. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Chang-2021-Three bod（1318KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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