Patent ID: 8161880

Claim:
A detonator assembly, comprising: a deflagration to detonation transition body; a first thermally stable secondary explosive contained by the body; a second thermally stable secondary explosive, wherein the second thermally stable secondary explosive is less sensitive than the first thermally stable secondary explosive, and wherein the first thermally stable secondary explosive and the second thermally stable secondary explosive are mixed, wherein the concentration of the first thermally stable secondary explosive ranges from 75% to 95% of the mixture of the first thermally stable secondary explosive and the second thermally stable secondary explosive; a bulkhead coupled to the deflagration to detonation transition body that contains pressure within the body associated with firing the detonator assembly at least until a transition from a deflagration operation mode of the detonator assembly to a detonation operation mode of the detonator assembly has occurred; and an initiator assembly coupled to the deflagration to detonation transition body inwards of the bulkhead, wherein a layer of the first thermally stable secondary explosive is contained by the deflagration to detonation transition body between the initiator assembly and the mixture of the first thermally stable secondary explosive and the second thermally stable secondary explosive, wherein the detonator assembly comprises effectively no primary explosive.