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    • Keywords


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

    • Abstract


      Absolute measurement for He-𝛼 resonance (1s2 1𝑆0-1s2p 1𝑃1, 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 Gupta2 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

  • Pramana – Journal of Physics | News

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