Ultraviolet photochemistry of ethane: implications for the atmospheric chemistry of the gas giants.

Chemical Science
Yao ChangChristopher S Hansen

Abstract

Chemical processing in the stratospheres of the gas giants is driven by incident vacuum ultraviolet (VUV) light. Ethane is an important constituent in the atmospheres of the gas giants in our solar system. The present work describes translational spectroscopy studies of the VUV photochemistry of ethane using tuneable radiation in the wavelength range 112 ≤ λ ≤ 126 nm from a free electron laser and event-triggered, fast-framing, multi-mass imaging detection methods. Contributions from at least five primary photofragmentation pathways yielding CH2, CH3 and/or H atom products are demonstrated and interpreted in terms of unimolecular decay following rapid non-adiabatic coupling to the ground state potential energy surface. These data serve to highlight parallels with methane photochemistry and limitations in contemporary models of the photoinduced stratospheric chemistry of the gas giants. The work identifies additional photochemical reactions that require incorporation into next generation extraterrestrial atmospheric chemistry models which should help rationalise hitherto unexplained aspects of the atmospheric ethane/acetylene ratios revealed by the Cassini-Huygens fly-by of Jupiter.

References

Jan 1, 1996·Icarus·G R GladstoneY L Yung
Oct 4, 2006·The Journal of Chemical Physics·Rob van Harrevelt
Jan 29, 2009·The Journal of Chemical Physics·Jonas M HostettlerPeter Chen
Dec 17, 2009·The Journal of Chemical Physics·Maricris D LodriguitoGeorge C Schatz
Feb 23, 2011·Physical Chemistry Chemical Physics : PCCP·Bérenger GansDolores Gauyacq
Jul 12, 2012·The Journal of Chemical Physics·Michael SteinbauerIngo Fischer
Dec 15, 2017·Physical Chemistry Chemical Physics : PCCP·U JacovellaF Merkt
Aug 3, 2018·The Journal of Chemical Physics·Akshaya Kumar Rauta, Biswajit Maiti
Sep 9, 2018·The Journal of Chemical Physics·Michael N R AshfoldXueming Yang
Dec 17, 2018·The Journal of Chemical Physics·L H CoudertA Röder
Jan 24, 2019·Physical Chemistry Chemical Physics : PCCP·Michael N R AshfoldJingsong Zhang
Nov 15, 2017·Icarus·Julianne I Moses, Andrew R Poppe
Mar 8, 2019·Icarus·Julianne I MosesVincent Hue
Oct 11, 2019·Physical Chemistry Chemical Physics : PCCP·Sonia Marggi PoullainLuis Bañares

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Citations

Jan 12, 2021·The Journal of Physical Chemistry Letters·Zhenxing LiXueming Yang

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