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    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/014/03/0545-0549

    • Keywords

       

      Laser-induced plasma; delayed spectral emission

    • Abstract

       

      The spectroscopic analysis of the emission from the plasma produced by irradiating a highTc 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.

    • Author Affiliations

       

      G Padmaja1 A V Ravi Kumar1 V Vidyalal1 P Radhakrishnan1 V P N Nampoori1 C P G Vallabhan1

      1. Department of Physics, Cochin University of Science and Technology, Cochin - 682 022, India

    • Dates

       
      Published
      June 1991

  • Bulletin of Materials Science | News

    • Dr Shanti Swarup Bhatnagar for Science and Technology

      Posted on October 12, 2020

      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
      Chemical Sciences 2020

      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
      Physical Sciences 2020

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

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