  The existing mathematical expressions, used to evaluate the number of atoms
displaced by particle irradiation of materials, are not applicable to 2D
structures like graphene. In a previous work (J. Radioanal. Nucl.Chem, 2011,
289,1, 167- 172) a model was developed for performing such evaluations in the
case of graphene irradiated with heavy ions and with light charged particles.
In the present paper we report the generalization of the model to the graphene
irradiated with neutrons in the energy range 0- 2 MeV.
