PS Planetary and Solar System Sciences
The 2013 Outstanding Student Poster (OSP) Award is awarded to Oleg Shebanits for the poster/PICO entitled:
Negative ion densities in the deep ionosphere of Titan (Shebanits, O.; Wahlund, J. E.; Mandt, K.; Ågren, K.; Edberg, N. J. T.; Waite Jr, H. J)
Click here to download the poster/PICO file.
Oleg Shebanits is a PhD student at the Swedish Institute of Space Physics in Uppsala (Sweden) and Uppsala University (Sweden). His research focuses on the production of pre-biotic molecules in the ionospheres of Saturn’s moon Titan and early Earth. The ionosphere of Titan hosts complex organic chemistry where ions are playing a key role. Heavy negative ions in particular are participating in the formation of aerosols (tholins) in Titan’s haze layer. The poster presents maps of electron, positive and heavy negative ion charge densities of Titan’s ionosphere, measured in situ by the RPWS Langmuir Probe on the Cassini s/c. Altitude profiles of the heavy negative ions show exponential increase towards lower altitudes, reaching up to 2500 cc. On the night side the ions are dominating, implying dusty plasma. This work is also accepted for publication in Planetary and Space Science (DOI: 10.1016/j.pss.2013.05.021).