Theresa C. Marlin*, Morgan L. Cable, Tuan H. Vu, Helen E. Maynard-Casely, Melissa Ugelow, Carrie Anderson and Robert Hodyss,
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引用次数: 0
Abstract
With its large size, dense atmosphere, methane-based hydrological-like cycle, and diverse surface features, the Saturnian moon Titan is one of the most unique of the outer Solar System satellites. Study of the photochemically produced molecules in Titan’s atmosphere is critical in order to understand the mechanics of the atmosphere and, by extension, the interactions between atmosphere, surface, and subsurface water ocean. One example is propyne vapor, a photochemically produced species in Titan’s upper atmosphere expected to condense in Titan’s stratosphere at lower altitudes. Propyne may also be a trace species in Titan’s stratospheric co-condensed ice clouds detected by the Cassini Composite InfraRed Spectrometer. Bulk structural characterization of propyne ice is currently incomplete and is lacking in published laboratory Raman spectra and X-ray diffraction data. Here, we present a laboratory characterization of propyne ice, including the first published X-ray diffraction and Raman spectroscopy results for propyne ice.
土卫六体积庞大,大气稠密,具有类似甲烷的水文循环和多样的表面特征,是太阳系外卫星中最独特的卫星之一。研究土卫六大气层中光化学产生的分子对于了解大气层的力学以及大气层、地表和地下水洋之间的相互作用至关重要。其中一个例子是丙炔蒸汽,它是土卫六高层大气中光化学产生的一种物质,预计会在土卫六较低高度的平流层中凝结。丙炔也可能是卡西尼复合红外光谱仪探测到的土卫六平流层共凝冰云中的痕量物种。丙炔冰的块体结构特征目前还不完整,在已发表的实验室拉曼光谱和 X 射线衍射数据中也缺乏表征。在此,我们介绍了丙炔冰的实验室表征,包括首次公布的丙炔冰的 X 射线衍射和拉曼光谱结果。
期刊介绍:
The scope of ACS Earth and Space Chemistry includes the application of analytical, experimental and theoretical chemistry to investigate research questions relevant to the Earth and Space. The journal encompasses the highly interdisciplinary nature of research in this area, while emphasizing chemistry and chemical research tools as the unifying theme. The journal publishes broadly in the domains of high- and low-temperature geochemistry, atmospheric chemistry, marine chemistry, planetary chemistry, astrochemistry, and analytical geochemistry. ACS Earth and Space Chemistry publishes Articles, Letters, Reviews, and Features to provide flexible formats to readily communicate all aspects of research in these fields.