The laser ignition characteristics of boron/potassium nitrate in a vacuum were investigated using a diode laser as an energy source. Ignition probability in the vacuum was experimentally measured. The minimum laser power for ignition was at most 0.4 W. The result was compared with the numerical calculation of the three-dimensional heat conduction with an exothermic reaction. As a result, the calculated threshold power and ignition time agreed well with the experimental results.
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Koizumi et al. (2009) studied this question.
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