An Algorithm for Computing Screened Coulomb Scattering in Geant4

Details An Algorithm for Computing Screened Coulomb Scattering in Geant4 An Algorithm for Computing Screened Coulomb Scattering in Geant4

2004-06-15

arxiv.org/abs/physics/0406066v2

Physics

Computational Physics

19 pages, 6 figures; corrected to rerferee comments, typo in equation 5 fixed

Scientific paper

10.1016/j.nimb.2004.08.014

An algorithm has been developed for the Geant4 Monte-Carlo package for the efficient computation of screened Coulomb interatomic scattering. It explicitly integrates the classical equations of motion for scattering events, resulting in precise tracking of both the projectile and the recoil target nucleus. The algorithm permits the user to plug in an arbitrary screening function, such as Lens-Jensen screening, which is good for backscattering calculations, or Ziegler-Biersack-Littmark screening, which is good for nuclear straggling and implantation problems. This will allow many of the applications of the TRIM and SRIM codes to be extended into the much more general Geant4 framework where nuclear and other effects can be included.

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