Abstract: A system for producing a localised concentration of energy from an input shockwave includes an amplifier arranged to manipulate one or more of the speed, pressure or shape of an input shockwave. The amplifier comprises a body of a first material, the body defining a cavity for manipulating the input shockwave to produce a manipulated shockwave. The cavity comprises an input for receiving the input shockwave incident upon the amplifier; and an output for outputting a manipulated shock-wave. The system further comprises a target configured to contain fuel, with the amplifier and the target being configured such that the manipulated shockwave is arranged to be output from the amplifier to be incident on the target.

Abstract: A component for exposing fluid to an input shockwave includes a body defining an input face arranged to receive the input shockwave, a chamber recessed in the input face for containing fluid, a fluid inlet for introducing fluid into the component, and an intermediate volume defined in the input face. The intermediate volume is provided at least partially between the fluid inlet and the chamber. The intermediate volume is fluidly connected to the fluid inlet and to the chamber for supplying fluid from the fluid inlet to the chamber. A portion of the input face is configured to sealingly abut against a further element for enclosing the intermediate volume .

Abstract: A component for manipulating an input shockwave. The component includes a body comprising a first material. The body defines a cavity for manipulating the input shockwave so to produce a manipulated shockwave. The cavity comprises an input for receiving the input shockwave incident upon the component and an output for outputting the manipulated shockwave from the cavity. The cavity contains a second material having a shock-impedance that is lower than a shock-impedance of the first material.