Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/70629
Type: | Conference paper |
Title: | New seeding methodology for two-line atomic fluorescence Part I: Non-reacting flow |
Author: | Chan, Q. Medwell, P. Dally, B. Alwahabi, Z. Nathan, G. |
Citation: | Proceedings of the Australian Combustion Symposium 2011: pp.1-4 |
Publisher: | The Combustion Institute |
Publisher Place: | Australia |
Issue Date: | 2011 |
Conference Name: | Australian Combustion Symposium (2011 : Newcastle, N.S.W.) |
Statement of Responsibility: | Q.N. Chan, P.R. Medwell, B.B. Dally, Z.T. Alwahabi & G.J. Nathan |
Abstract: | This paper demonstrates the feasibility of using pulsed laser ablation to generate neutral indium atoms at ambient pressure and temperature. The indium atoms can be used as the thermometry species for the two-line atomic fluorescence (TLAF) method, which is emerging as a useful laser-based thermometry technique in sooty environments. The ablation of an indium rod is achieved with the use of a focused, beam from the second harmonic of a pulsed Nd:YAG laser onto an indium rod at approximately atmospheric pressure. The neutral indium atoms generated by the pulsed laser ablation method are found to be sufficiently stable to allow them to be generated upstream from the from the measurement region and survive a convection time of at least 30 seconds before entering the measurement region in the flame. This offers a number of important advantages for the TLAF technique over the previously established seeding methodology employing a fine mist of indium chloride solution, namely greater operating range and increased flexibility. |
Keywords: | Two-line Atomic Fluorescence Temperature Laser Ablation Indium. |
Rights: | Copyright status unknown |
Description (link): | http://www.2011australiancombustionsymposium.com/ |
Published version: | http://www.adelaide.edu.au/directory/paul.medwell |
Appears in Collections: | Aurora harvest Environment Institute Leaders publications Environment Institute publications Mechanical Engineering conference papers |
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