Physics and Statistics of the Electrical Initiation Process in Conducting Composition Systems

摘要

The resistance of a random array of a mixture of conducting and explosive particles is studied using a Monte' Carlo approach and a combination of digital and analog computing. Voltage sensitivity is discussed using the maximum current concentrations in the array, electric contact theory and the hot spot theory of thermal explosion. It is considered that 2 volts is the threshold for safety in graphite devices and that above two volts there are several distinct mechanisms for energy transfer from conductor to the explosive. At 4 volts the contacts disrupt giving efficient energy transfer by impact of incandescent vapour. This is considered to be the mechanism of the fast mode of action used in Service devices.