• KAMAL KUMAR GULATI

      Articles written in Pramana – Journal of Physics

    • Real-time stand-off detection of improvised explosive materials using time-gated UV–Raman spectroscopy

      KAMAL KUMAR GULATI SANJAY GULIA NITESH KUMAR ANIL KUMAR SWARAN KUMARI VIJAYETA GAMBHIR M N REDDY

      More Details Abstract Fulltext PDF

      A transportable, trolley-mounted stand-off explosive material detection system based on the time-gated Raman spectroscopy was developed and tested in our laboratory. This system is capable of identifying the explosives and improvised explosive materials located up to a distance of 30 m. A frequency tripled Nd:YAG, nanosecond pulsed laser (355 nm, 6 ns) operated at 10 Hz was used as an excitation source to induce Raman spectra of explosive materials under investigation. A reflected type 200 mm aperture telescope designed using Zemax opticaldesign software was used to collect the backscattered Raman signals. Raman signals were recorded using the gated intensified charge coupled device (ICCD) spectrograph. A LabVIEW-based data acquisition and analysis software for real-time identification of materials was developed and used. It gives audio as well as text alarm to the operatorabout threat identification.

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