LOCALISED ENERGY CONCENTRATION

摘要

A method of producing a localised concentration of energy comprises: creating at least one shockwave (8) propagating through a non-gaseous medium (2) so as first to be incident upon a focusing pocket of fluid (4) within the medium (2). The focusing pocket of fluid (4) is positioned relative to a differently sized target pocket of gas (6) within the medium (2), and is arranged to shield the target pocket of gas (6) from the initial shockwave (8), such that the incidence of the shockwave (8) on the focusing pocket of fluid (4) concentrates the intensity of a shockwave subsequently incident upon the target pocket of gas (6). An apparatus for producing a localised concentration of energy is also provided.