METHOD FOR MAKING PERFORATIONS IN A SOLID SHEET MATERIAL, IRRADIATION DEVICE FOR IMPLEMENTING THE METHOD AND PERFORATED MATERIAL THUS OBTAINED

摘要

Method for making perforations (1) in a solid sheet material (2) wherein the material (2) is first subjected to a bombardment of particles (3) in order to obtain traces of damaging the material (2) in its thickness, whereafter the material thus bombarded is selectively attacked along the damaging traces in order to obtain perforations (1), the material (2) being subjected to a bombardment of heavy ions (3) which are highly ionized and accelerated with an energy of the order of 2Mev per Nucleon, the beam of accelerated particles (3) having an intensity comprised between 10<6> and 10<13> ions per second, and this being effected by means of an irradiation device (4) combined to an upstream isochronic cyclotron.