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    • Abstract

       

      Propagation of shock waves in soda lime glass, which is a transparent material, has been studied using the optical shadowgraphy technique. The time-resolved shock velocity information has been obtained (1) in single shot, using the chirped pulse shadowgraphy technique, with a temporal resolution of tens of picoseconds and (2) in multiple shots, using conventional snapshot approach, with a second harmonic probe pulse. Transient shock velocities of $(5–7) \times 10^{6}$ cm/s have been obtained. The scaling of the shock velocity with intensity in the $2 \times 10^{13}–10^{14}$ W/cm$^2$ range has been obtained. The shock velocity is observed to scale with laser intensity as $I^{0.38}$. The present experiments also show the presence of ionization tracks, generated probably due to X-ray hotspots from small-scale filamentation instabilities. The results and various issues involved in these experiments are discussed

    • Author Affiliations

       

      PRASAD Y B S R1 2 BARNWAL S1 2 NAIK P A1 2 YADAV Y3 PATIDAR R1 2 KAMATH M P1 UPADHYAY A1 2 BAGCHI S1 KUMAR A1 JOSHI A S1 GUPTA P D1 2

      1. Laser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore 452 013, India
      2. Homi Bhabha National Institute, Anushaktinagar, Mumbai 400 094, India
      3. School of Physics, DAVV Indore, Indore 452 001, India
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  • Pramana – Journal of Physics | News

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