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      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/061/06/1121-1128

    • Keywords

       

      XUV spectroscopy; laser-produced plasmas; flat-field spectrograph; Nd : phosphate glass laser

    • Abstract

       

      Absolute measurement for He-α resonance (1s21S0−1s2p1P1, at 40.2 Å) line emission from a laser-produced carbon plasma has been studied as a function of laser intensity. The optimum laser intensity is found to be ≈1.3×1012 W/cm2 for the maximum emission of 3.2 × 1013 photons sr−1 pulse−1. Since this line lies in the water window spectral region, it has potential application in x-ray microscopic imaging of biological sample in wet condition. Theoretical calculation using corona model for the emission of this line is also carried out with appropriate ionization and radiative recombination rate coefficients

    • Author Affiliations

       

      A Chowdhury1 R A Joshi1 G P Gupta1 2 P A Naik1 P D Gupta1

      1. Laser Plasma Division, Centre for Advanced Technology, Indore - 452 013, India
      2. Laser and Plasma Technology Division, Bhabha Atomic Research Centre, Mumbai - 400 085, India

    • Dates

       
      Published
      December 2003
      Manuscript received
      11 March 2003
      Accepted
      3 July 2003

  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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