- Names
-
- L. Zhou
- R. I. Kaiser
- A. T. Tokunaga
- Title
- Infrared spectroscopy of crystalline and amorphous diacetylene (C $_4$H $_2$) and implications for Titan's atmospheric composition
- Abstract
- New laboratory spectra of crystalline and amorphous diacetylene ice have been recorded in the range of 7000-500 cm$^-1$ (1.4-20 μm) to aid in the identification of solid diacetylene on Saturn&'s moon Titan. We have established that amorphous diacetylene ice is stable only at temperatures less than 70$\pm$1 K. With respect to observations on Titan, the best approach would be to utilize future space-based telescopes to search for the ν$_4$ (3277/3271 cm$^-1$) in absorption against the reflected light from the sun and the slightly weaker ν$_8$ absorption bands (676/661 cm$^-1$) in absorption against the continuum emission.
- Keywords
- spectroscopy, transmission spectra, absorbance spectra, band position, band vibration mode, mid-IR, temperature, phase change, amorphous, crystal, molecular solid, C4H2
- Content
- spectral data, band list data, experimental physics
- Year
- 2009
- Journal
- Planetary and Space Science
- Volume
- 57
- Number
- 7
- Pages
- 830 - 835
- Pages number
- 6
- Document type
- article
- Publication state
- published
- Doi
- 10.1016/j.pss.2009.02.003
- Identifiers
-
- bibcode: 2009P&SS...57..830Z