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Please use this identifier to cite or link to this item: http://dyuthi.cusat.ac.in/purl/2464

Title: Characteristics of laser-induced plasma from highTc superconductor
Authors: Padmaja, G
Ravi Kumar, A V
Vidyalal, V
Radhakrishnan, P
Nampoori, V P N
Vallabhan, C P G
Technology
Keywords: Laser-induced plasma
delayed spectral emission
Issue Date: Jun-1991
Publisher: Springer
Abstract: The spectroscopic analysis of the emission from the plasma produced by irradiating a highT c superconducting GdBa2Cu3O7 target with a high power Nd:YAG laser beam shows the existence of the bands from different oxides in addition to the lines from neutrals and ions of the constituent elements. The spectral emissions by oxide species in laser-induced plasma show considerable time delays as compared to those from neutral and ionic species. Recombination processes taking place during the cooling of the hot plasma, rather than the plasma expansion velocities, have been found to be responsible for the observed time delays in this case. The decays of emission intensities from various species are found to be non-exponential.
URI: http://dyuthi.cusat.ac.in/purl/2464
ISSN: 0250-4707
Appears in Collections:Dr.C P Girijavallabhan

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