Radioactive [gamma/beta] tracer to explore dangerous technogenic phenomena

A radioactive [gamma/beta] tracer to explore dangerous technogenic phenomena has been proposed: the ratio of the measured flux density of [beta] - and [gamma]-radiations in the surface layer of the atmosphere. The time dependence analysis of the ratio of [beta] and [gamma]-pulse count rate has been carried out. A significant increase of the [gamma/beta] ratio was recorded under the cyclone passing through Japan (Fukushima) to Kamchatka. The proposed [gamma/beta] tracer can be a very sensitive indicator of nonstationary processes related to hazardous natural and technogenic phenomena