Localised energy concentration

A system for producing a localised concentration of energy comprising:

• an amplifier for manipulating an input shockwave, wherein the amplifier comprises:
• a body comprising a first material;
• wherein the body defines a cavity for manipulating the input shockwave so to produce a manipulated shockwave;
• wherein the cavity comprises;
• an input for receiving the input shockwave incident upon the amplifier;
• an output for outputting the manipulated shockwave from the cavity;
• and
• a plurality of layers between the input and the output;
• wherein the plurality of layers comprises one or more layers comprising a second material having a shock-impedance that is lower than a shock-impedance of the first material;
• wherein the system further comprises a target configured to contain fuel;
• and
• wherein the amplifier and the target are configured such that the manipulated shockwave is arranged to be output from the amplifier so to be incident upon the target.

A system for producing a localised concentration of energy comprising:

• an amplifier for manipulating an input shockwave, wherein the amplifier comprises:
• an input face for receiving the input shockwave incident upon the amplifier;
• an output face for outputting the manipulated shockwave from the amplifier;
• and
• a plurality of layers between the input face and the output face;
• wherein the system further comprises a target configured to contain fuel;
• and
• wherein the amplifier and the target are configured such that the manipulated shockwave is arranged to be output from the amplifier so to be incident upon the target.