Cold aerosol nanoparticles
Aerosols impact earth's climate both directly through absorption and reflection of light, and indirectly by hosting chemical reactions and influencing cloud formation. Recently, a new generation of collisional cooling cell designed by one of our collaborators (Sigurd Bauerecker) has created possibilities for studying aerosols generated by pulsed sequences of injections.
With recent development work on the cooling cell at the Australian Synchrotron it is now possible to extend these measurements to the crucial but unexplored far IR region. Aerosol spectra can reveal diagnostic information about particle size, temperature and the physical phase as well as provide fundamental optical constants needed to quantify scattering and absorption of radiation. We are studying cold aerosols comprised of water and other hydrocarbons relevant to astrochemical environments.