Speaker
Dr
Evan Robertson
(La Trobe University)
Description
Water is both an important and interesting molecular system that needs to be well understood because it exists in so many fields of research, and more often than not its presence can be undesired. The ice particles in both our own atmosphere, and the ISM, predominantly exist as either small ice particles or silicate dust grains coated with ice which can act as a reaction medium for producing more complex molecules.
We explore how isotopic dilution, using D2O, affects the shape and frequency of the vibrations that are observed in the mid infrared (MIR) spectrum[1], more specifically the OH- and OD- stretching modes. In addition to changing the concentration of D2O used, the physical aspects of the experiment itself also contribute to what is observed. Presented herein, is the MIR data collected at the Australian Synchrotron, using different H2O:D2O ratios, and at temperatures ranging from 6 K to 210 K.
1Medcraft, C, McNaughton, D, Thompson, CD, Appadoo, DRT, Bauerecker, S, Robertson, EG, Phys. Chem. Chem. Phys. 2013, 15, 3630
| Keywords or phrases (comma separated) | ice, infrared, aerosol, synchrotron |
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Primary author
Mr
Andy Wong
(Monash University)
Co-authors
Dr
Chris Thompson
(Monash University)
Dr
Dominique Appadoo
(Australian Synchrotron)
Prof.
Don McNaughton
(Monash University)
Dr
Evan Robertson
(La Trobe University)
Dr
Sigurd Bauerecker
(Technische Universitat Braunschweig)
