 method for cooling matter, said method employing carbon dioxide snow; wherein a liquid carbon dioxide flow is subjected to a pressure expansion to create a flow of carbon dioxide snow particles, and said snow particles are applied to said matter, characterized in that said flow of carbon dioxide snow particles is caused to physically engage an inner surface of a metallic electrically conductive tube and achieve a negative charge; and said negatively charged flow of carbon dioxide snow particles is directed towards said matter and toward a conductive material of lesser or opposite electrical charge, so that said conductive material attracts said negatively charged flow of carbon dioxide snow particles and aids contact thereof on said matter; wherein the metallic conductive tube is grounded. 