Plume splitting and sharpening in laser-produced aluminium plasma

Plume splitting and sharpening were observed in laser-produced aluminium plasma created using 532 nm, 8 ns pulses from a frequency doubled Nd : YAG laser. Measurements were made using 2 ns gated fast photography as well as space and time resolved optical emission spectroscopy. The motion of the lead...

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Bibliographic Details
Published inJournal of physics. D, Applied physics Vol. 35; no. 22; pp. 2935 - 2938
Main Authors Harilal, S S, Bindhu, C V, Tillack, M S, Najmabadi, F, Gaeris, A C
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 21.11.2002
Institute of Physics
Subjects
Exact sciences and technology
Optical (ultraviolet, visible, infrared) measurements
Physics
Physics of gases, plasmas and electric discharges
Physics of plasmas and electric discharges
Plasma diagnostic techniques and instrumentation
Plasma production and heating
Plasma production and heating by laser beams
Plasma production by laser
Plasma
Optical spectrometry
Plasma diagnostics
YAG laser
Aluminium
Experimental study
Imagery
Neodymium lasers
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Summary:Plume splitting and sharpening were observed in laser-produced aluminium plasma created using 532 nm, 8 ns pulses from a frequency doubled Nd : YAG laser. Measurements were made using 2 ns gated fast photography as well as space and time resolved optical emission spectroscopy. The motion of the leading edge of the plume was studied with several background air pressures and the expansion of the plume front was compared with various expansion models. Combining imaging together with time resolved emission diagnostics, a triple structure of the plume was observed.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0022-3727
1361-6463
DOI:10.1088/0022-3727/35/22/307