AAAR 32nd Annual Conference
September 30 - October 4, 2013
Oregon Convention Center
Portland, Oregon, USA
Abstract View
Observing Water Microdroplet Freezing below “Homogenous Nucleation Temperature Limit” with Ultrafast X-ray Laser at LCLS
HARTAWAN LAKSMONO, Trevor A. McQueen, Jonas A. Sellberg, Congcong Huang, N. Duane Loh, Raymond G. Sierra, Dmitri Starodub, Dennis Norlund, Martin Beye, Daniel P. DePonte, Andrew Martin, Anton Barty, Jan Feldkamp, Sebastien Boutet, Garth J. Williams, Michael J. Bogan, Anders Nilsson, SLAC National Accelerator Laboratory
Abstract Number: 75 Working Group: Aerosol Physics
Abstract Water is arguably the most important substance in our life, environment, and industry. In addition, water is also fascinating due to many anomalous physical properties, and many phases of solid it forms. Although many have performed experiments to understand water and its phase transition, there is still a region, below “homogenous nucleation temperature limit”, ~232K, where it is not well understood due to rapid crystallization complicating experimental studies. In addition, understanding phase transition within this region is important to predict cloud properties and phases of water in the interstellar space. Our knowledge of water freezing within this region is limited because there are only a few experiments performed. With a recent development in an ultrafast and ultrabright X-ray Free Electron Laser at the Linac Coherent Light Source (LCLS), many researchers have been able to probe matter in high resolution by taking snapshots using femtoseconds long X-ray pulses. Here we will present our ongoing effort to understand phase transition below the “homogenous nucleation temperature limit” from our recent wide angle X-ray scattering experiment using a specialized setup to take advantage of the X-ray laser at LCLS.