• T S Shirsat

      Articles written in Pramana – Journal of Physics

    • Calorimetric study of laser-irradiated thin foil targets

      T S Shirsat S Sharma H C Pant

      More Details Abstract Fulltext PDF

      Hydrodynmaic efficiency of laser-irradiated thin aluminum and gold-coated aluminum targets was experimentally determined using a specially designed cone calorimeter. Velocity of the accelerated target and ablation pressure were also estimated from the experimental data. The laser irradiance range used in the experiments was between 1012 and 1013 watts/cm2. Experiments indicate that the fall in the hydrodynamic efficiency due to gold coating on aluminum target is about 12% at an irradiance of 8 × 1012 W/cm2.

    • A simple technique for laser-induced ablation pressure measurement

      T S Shirsat N S Shikharkhane H C Pant

      More Details Abstract Fulltext PDF

      A simple method for measuring laser-induced ablation pressure is described. The technique utilizes the well-known double foil concept. In the present experiment the impact times were estimated by monitoring the reflectivity of the impact foil rear. The measurements were performed using a glass laser (1·06 µm wavelength) in the 1011−1013 W/cm2 irradiance range. Experimental results showed good agreement with those obtained using other techniques as also those with the self-regulating ablation model prediction.

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