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2006•Modern Physics Letters BRequires access

INVESTIGATION ON OXYGEN-EQUILIBRIUM EFFECTS OF LASER IGNITION OF ENERGETIC MATERIALS

Shi-biao Xiang, Xu Xiang, Guang Hua, Lang Chen, Feng Chang-gen

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Abstract

An investigation on oxygen-equilibrium of laser ignition of energetic materials was carried out through experiments. The threshold energy of laser ignition of several systems such as Zr/KClO 4, Ti/KClO 4, and Mg/KClO 4 were measured with different system composition. The results show that the mass ratio of initial mixture powders has a significant effect on the threshold energy of ignition. The threshold energy presents a minimum with increasing mass ratio, which corresponds to an oxygen-rich system composition. That is, an oxygen-rich composition is favorable to laser ignition. The ignition requires lower threshold, or energetic materials have relatively higher laser sensitivity. Also the findings were theoretically analyzed.

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What this paper is about

An investigation on oxygen-equilibrium of laser ignition of energetic materials was carried out through experiments. The threshold energy of laser ignition of several systems such as Zr/KClO 4, Ti/KClO 4, and Mg/KClO 4 were measured with different system composition. The results show that the mass ratio of initial mixture powders has a significant effect on the threshold energy of ignition. The threshold energy presents a minimum with increasing mass ratio, which corresponds to an oxygen-rich system composition. That is, an oxygen-rich composition is favorable to laser ignition. The ignition requires lower threshold, or energetic materials have relatively higher laser sensitivity. Also the findings were theoretically analyzed.

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Available abstract

An investigation on oxygen-equilibrium of laser ignition of energetic materials was carried out through experiments. The threshold energy of laser ignition of several systems such as Zr/KClO 4, Ti/KClO 4, and Mg/KClO 4 were measured with different system composition. The results show that the mass ratio of initial mixture powders has a significant effect on the threshold energy of ignition. The threshold energy presents a minimum with increasing mass ratio, which corresponds to an oxygen-rich system composition. That is, an oxygen-rich composition is favorable to laser ignition. The ignition requires lower threshold, or energetic materials have relatively higher laser sensitivity. Also the findings were theoretically analyzed.

Key concepts: Laser ignition, Ignition system, Laser, Oxygen, Materials science, Minimum ignition energy, Thermodynamics, Autoignition temperature

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