Abstract: A photoacid generator represented by Formula 1 or Formula 2: wherein R1, R2, and R3 are each independently a C1-C10 alkyl group, X is a C3-C20 alicyclic hydrocarbon group forming a ring with S+, and at least one CH2 group in the alicyclic hydrocarbon group may be replaced with at least one selected from the group consisting of S, O, NH, a carbonyl group, and R5—S+A?, where R5 is a C1-C10 alkyl group, and A? is a counter-ion.

Abstract: A photoacid generator represented by Formula 1 or Formula 2: wherein R1, R2, and R3 are each independently a C1-C10 alkyl group, X is a C3-C20 alicyclic hydrocarbon group forming a ring with S+, and at least one CH2 group in the alicyclic hydrocarbon group may be replaced with at least one selected from the group consisting of S, O, NH, a carbonyl group, and R5—S+A?, where R5 is a C1-C10 alkyl group, and A? is a counter-ion.

Abstract: A rock fragmentation system using Gold Schmidt method and process for blasting using the machine are provided, wherein the blasting machine has a capacitor bank, a switch, a high voltage electric power supply, a first charge dump and a second charge dump, and an electrode assembly which is connected to capacitor bank and switch with a coxial cable and electrodes at a lower end of the electrode assembly, wherein an aluminum and metal oxide composition of a predetermined mixture ratio is inserted between electrodes in a lower end of the electrode assembly for generating an instant reaction energy by discharging the electric energy.