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18 March 1994 Laser ignition of ball powder (nitrocellulose base)
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Laser ignition experiments of ball powder have been performed in a specially designed and constructed `optical' loader, employing five different lasers; viz. Excimer (ArF 193 nm), Nd:Yag, CO2 Pulsed, CO2 cw Chopped and Ruby. This study provides pertinent technical information necessary for the further development of laser ordnance ignition systems towards practical hardware devices (military and commercial). Specifically, it has experimentally demonstrated that direct ignition of ball powder can be successfully obtained with well-controlled laser pulses, provided the fluence exceeds a critical threshold value. This threshold fluence depends on laser wavelength, beam quality and pulse length. Furthermore, means for relaxing the optical alignment, and improving the efficiency of coupling the laser output to the energetic material are evaluated.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Moshe Lavid, Suresh K. Gulati, and Walter R. Lempert "Laser ignition of ball powder (nitrocellulose base)", Proc. SPIE 2122, Laser Applications in Combustion and Combustion Diagnostics II, (18 March 1994);

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