Patent ID: 8545710
Filing Date: 2013-10-01
Classification: C23C,G01N,H01J,H01L,Y10T

Abstract:
1. A method of predicting damage of ion radiation to a fabrication object comprising: a first step of computing, by a processor, an incidence energy of a given incident ion hitting a fabrication object, a collision position of the given incident ion, and an incidence angle of the given incident ion by consideration of a transport path traced by the given incident ion as a path to the fabrication object and by the Monte Carlo method taking as input parameters a distribution of flux quantities of incident ions, a distribution of incidence energies of incident ions, and a distribution of incidence angles of incident ions; a second step of searching, by the processor, for data in one or more databases created in advance, wherein the databases are searched on the basis of at least the incidence energy and the incidence angle of the given incident ion, and include as data entries: a third step of computing, by the processor, a penetration depth of the given incident ion by using a distribution of ion penetration depths found by searching the databases in the second step; a fourth step of computing, by the processor, a penetration location of the given incident ion; a fifth step of computing, by the processor, a quantity of defects caused by the given incident ion by using a distribution of quantities of crystalline defects affecting the fabrication by the processor and it is determined, by the processor, whether a second collision position of the given incident ion with the fabrication object exists and, if the second collision position exists, the second step is repeated with the computed second incidence angle of the given incident ion replacing the incidence angle the given incident ion and the second collision position of the given incident ion replacing the collision position of the given incident ion.