Patent ID: 6838786

Claim:
A device for generating intense and brief magnetic pressure variations, predetermined and controlled, able to be isentropic inside a sample ( 23 ) made of a solid material, comprising: means ( 2 , 3 ) for generating current pulses of the pulsed high power type; and an electromagnetic cell ( 1 ) connected to the electric current pulse generating means ( 2 , 3 ), said electromagnetic cell ( 1 ) bearing the sample ( 23 ) and being adapted so as to have the sample ( 23 ) subjected to electromagnetic energy pulses resulting from the application to the electromagnetic cell ( 1 ) of electric current pulses originating from the electric current pulse generating means ( 2 , 3 ), wherein the electromagnetic cell ( 1 ) includes a parallel flat line made of a conductive material including two branches ( 4 , 5 ) with the shape of planar plates having the same shapes and dimensions and separated from each other by a distance less than or equal to 3 mm, one of said branches ( 4 ) bearing the sample ( 23 ) fixed rigidly to this branch ( 4 ), these two branches ( 4 , 5 ) being electrically connected to each other by an end junction strip ( 7 ) and electrically connected opposite the end junction strip ( 7 ) to the electric current pulse generating means ( 2 , 3 ) so as to allow an electric current to be established circulating from the electric current pulse generating means ( 2 , 3 ) in one branch ( 4 ) and then into the end strip ( 7 ) and then into the other branch ( 5 ) so as to come back to the electric current pulse generating means ( 2 , 3 ), and wherein the electric current pulse generating means ( 2 , 3 ) and the electromagnetic cell ( 1 ) are adapted so that the build-up time τ in which the square of the intensity of the electric current circulating in the electromagnetic cell ( 1 ) moves from 10% to 90% of its maximum value I max 2 namely between 1 ns and 500 ns.