20-21 November 2014
National Centre for Synchrotron Science
Australia/Melbourne timezone
Save the date: User Meeting 2015 - 26-27 November

Infrared spectra of H2O aerosols diluted with D2O

20 Nov 2014, 17:30
1h 30m
NCSS Exhibition Area ()

NCSS Exhibition Area

Australian Synchrotron 800 Blackburn Road Clayton VIC 3168
Board: 406
Poster Earth and Environment Welcome Function, Poster Session, Exhibition


Dr Evan Robertson (La Trobe University)


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

Primary author

Mr Andy Wong (Monash University)


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)

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