2-6 September 2013
STIAS Conference Centre
Africa/Johannesburg timezone
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Imaging of solid aerosols produced by optical catapulting

Presented by Mr. Mahmoud MOHAMED on 4 Sep 2013 from 14:00 to 16:00
Track: Poster Presentation

Abstract content

The analysis of solid aerosols has a great importance in many fields of applications including atmospheric sciences, process monitoring and control. Optical catapulting OC is a good sampling method and has been used in combination with Laser induced breakdown spectroscopy LIBS for analysis of solid aerosols. In the present study Imaging experiments were performed in order to probe the behavior and dynamics of OC- produced solid aerosols. Two synchronized Nd: YAG lasers have been used, one for optical catapulting at wavelength = 1064 nm and the other for imaging purpose at wavelength = 532 nm. Standard aluminium silicate particles of size ranging from 0.2 to 8 µm have been used as catapulting target. Several parameters relevant to aerosols dynamics have been studied, such as the effect of interpulse delay time ∆t, the effect of laser fluence as well as the effect of working distance. Experimental velocity values of the solid aerosols have been also obtained.

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Location: STIAS Conference Centre
Address: Stellenbosch Institute for Advanced Study Wallenberg Research Centre 10 Marais Road Stellenbosch South Africa www.stias.ac.za
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