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Propyne: Determination of Physical Properties and Unit Cell Parameters under Titan-Relevant Conditions

Journal Article · · ACS Earth and Space Chemistry
 [1];  [2];  [2];  [3];  [4];  [4];  [2]
  1. California Institute of Technology (CalTech), Pasadena, CA (United States). Jet Propulsion Lab. (JPL); California Institute of Technology (CalTech), Pasadena, CA (United States)
  2. California Institute of Technology (CalTech), Pasadena, CA (United States). Jet Propulsion Lab. (JPL)
  3. Australian Nuclear Science and Technology Organisation (ANSTO), Kirrawee, NSW (Australia)
  4. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States)

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.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Organization:
USDOE Office of Science (SC); National Aeronautics and Space Administration (NASA)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
2470171
Journal Information:
ACS Earth and Space Chemistry, Journal Name: ACS Earth and Space Chemistry Journal Issue: 5 Vol. 8; ISSN 2472-3452
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

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