Please use this identifier to cite or link to this item: http://hdl.handle.net/10497/17282
Title: Effects of laser energy fluence on the onset and growth of the Rayleigh-Taylor instabilities and its influence on the topography of the Fe thin film grown in pulsed laser deposition facility
Authors: Mahmood, S.
Rawat, Rajdeep Singh
Wang, Y.
Lee, Sing
Zakaullah, M.
Tan, Augustine Tuck Lee
Springham, Stuart Victor
Lee, Paul Choon Keat
Issue Date: 2012
Citation: Mahmood, S., Rawat, R. S., Wang, Y., Lee, S., Zakaullah, M., Tan, T. L., ... & Lee, P. (2012). Effects of laser energy fluence on the onset and growth of the Rayleigh–Taylor instabilities and its influence on the topography of the Fe thin film grown in pulsed laser deposition facility. Physics of Plasmas, 19(10), 103504.
Abstract: The effect of laser energy fluence on the onset and growth of Rayleigh–Taylor (RT) instabilities in laser induced Fe plasma is investigated using time-resolved fast gated imaging. The snow plow and shock wave models are fitted to the experimental results and used to estimate the ablation parameters and the density of gas atoms that interact with the ablated species. It is observed that RT instability develops during the interface deceleration stage and grows for a considerable time for higher laser energy fluence. The effects of RT instabilities formation on the surface topography of the Fe thin films grown in pulsed laser deposition system are investigated (i) using different laser energy fluences for the same wavelength of laser radiation and (ii) using different laser wavelengths keeping the energy fluence fixed. It is concluded that the deposition achieved under turbulent condition leads to less smooth deposition surfaces with bigger sized particle agglomerates or network.
URI: http://hdl.handle.net/10497/17282
ISSN: 1089-7674 (online)
1070-664X (print)
Other Identifiers: 10.1063/1.4763555
Website: http://dx.doi.org/10.1063/1.4763555
Appears in Collections:Journal Articles

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