DEFLAGRATION TO DETONATION CHOKE

摘要

A detonator (10) is described which employs an explosive choke (26) along an explore column to cause conditions which are highly conducive to detonation. The detonator comprises a cylindrical casing (12) which contains a bore and an enclosed pair of coaxial explosive column portions - a larger diameter column (28) and a smaller diameter column (30). The two column portions are joined at a choke (26) or diametrical reduction in the size of the bore. The detonator also includes an initiator assembly (16). The inventive detonator (ensures) reliable deflagration to detonation activity in high temperature explosives such as HNS, PYX, BRX and NONA. A deflagration to detonation method which features the initiation of deflagration in a portion of a confined, larger diameter explosive as desribed. Deflagration occurs along the length of the larger diameter column portion until an explosive choke is reached wherein the larger diameter column portion is transitioned into a smaller diameter coaxial column portion.