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Analysis of EMP generated by explosion in tunnels

The paper describes the some results of experimental investigations of Electromagnetic Pulses (EMP) generated during the explosion of hexogen charges in tunnels. The shape and duration of the signals in the range of the several milliseconds were studied. The results obtained after experimental investigations can be used for establishing the criteria for identification of explosions. Experiments have conducted in the underground test opening of G. Tsulukidze Mining Institute. During experiments, electromagnetic pulses (EMP) and optical signals, generated under explosion of condensed charges of explosives in tunnels, were recorded simultaneously.