Hydroxyl super rotors from vacuum ultraviolet photodissociation of water

Yao Chang, Yong Yu, Heilong Wang, Xixi Hu (), Qinming Li, Jiayue Yang, Shu Su, Zhigang He, Zhichao Chen, Li Che, Xingan Wang, Weiqing Zhang, Guorong Wu, Daiqian Xie, Michael N. R. Ashfold, Kaijun Yuan () and Xueming Yang ()
Additional contact information
Yao Chang: Chinese Academy of Sciences
Yong Yu: Chinese Academy of Sciences
Heilong Wang: Chinese Academy of Sciences
Xixi Hu: Nanjing University
Qinming Li: Chinese Academy of Sciences
Jiayue Yang: Chinese Academy of Sciences
Shu Su: Chinese Academy of Sciences
Zhigang He: Chinese Academy of Sciences
Zhichao Chen: Chinese Academy of Sciences
Li Che: Dalian Maritime University
Xingan Wang: University of Science and Technology of China
Weiqing Zhang: Chinese Academy of Sciences
Guorong Wu: Chinese Academy of Sciences
Daiqian Xie: Nanjing University
Michael N. R. Ashfold: University of Bristol
Kaijun Yuan: Chinese Academy of Sciences
Xueming Yang: Chinese Academy of Sciences

Nature Communications, 2019, vol. 10, issue 1, 1-7

Abstract: Abstract Hydroxyl radicals (OH) play a central role in the interstellar medium. Here, we observe highly rotationally excited OH radicals with energies above the bond dissociation energy, termed OH “super rotors”, from the vacuum ultraviolet photodissociation of water. The most highly excited OH(X) super rotors identified at 115.2 nm photolysis have an internal energy of 4.86 eV. A striking enhancement in the yield of vibrationally-excited OH super rotors is detected when exciting the bending vibration of the water molecule. Theoretical analysis shows that bending excitation enhances the probability of non-adiabatic coupling between the $$\tilde B$$ B ̃ and $$\tilde X$$ X ̃ states of water at collinear O–H–H geometries following fast internal conversion from the initially excited $$\tilde D$$ D ̃ state. The present study illustrates a route to produce extremely rotationally excited OH(X) radicals from vacuum ultraviolet water photolysis, which may be related to the production of the highly rotationally excited OH(X) radicals observed in the interstellar medium.

Date: 2019
References: Add references at CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.nature.com/articles/s41467-019-09176-z Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-09176-z

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-019-09176-z

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().