MATHEMATICAL SCIENCES

Scholars review the study of extreme ultraviolet photochemistry of interstellar molecules


Recently, the team of Yuan Kaijun, a researcher at the Dalian Institute of Chemical Physics, Chinese Academy of Sciences, and Professor Mike Ashfold from the University of Bristol were invited to publish a review of extreme ultraviolet photochemistry of interstellar molecules in the National Science Review. It systematically introduces the progress made by the team in recent years based on the photochemical kinetics of interstellar molecules based on Dalian coherent light source, and discusses the future opportunities and challenges in this field.

Schematic diagram of the interstellar science experiment station (Photo courtesy of Dalian Institute of Chemical Physics, Chinese Academy of Sciences)

Extreme ultraviolet photochemistry of small molecules is key to understanding molecular evolution and the origin of life in the early universe. In the past few decades, due to the lack of high-brightness, tunable extreme ultraviolet light sources, it is difficult to accurately locate extreme ultraviolet light, and the research on extreme ultraviolet photochemistry of small molecules is very lacking. Yuan Kaijun’s team developed a new research method based on Dalian coherent light source, which realized high-resolution measurement of molecular photochemical products in all bands and channels.

In this review, based on the study of Dalian coherent light source, the team focuses on the latest progress in the photochemical kinetics of polar ultraviolet light of several important triatomic molecules in interstellar space, and reveals new images of molecular dissociation mechanisms, describing the role of these photochemical processes in understanding the evolution of nebulae and planetary atmospheres.

This achievement demonstrates the importance of large scientific devices in the study of interstellar molecular photochemistry, and discusses the future research direction of Dalian coherent light source in the field of interstellar science. (Source: Sun Danning, China Science News)

Related paper information:https://doi.org/10.1093/nsr/nwad158



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